Szabolcs Keri

Summary

Affiliation: University of Szeged
Country: Hungary

Publications

  1. ncbi request reprint [Therapy of mental states at high risk for psychosis: preliminary results from Hungary]
    Szabolcs Keri
    Szegedi Tudomanyegyetem, Szent Gyorgyi Albert Orvos es Gyogyszeresztudomanyi Kozpont, Általános Orvostudományi Kar, Pszichiatriai Klinika, Szeged
    Orv Hetil 147:201-4. 2006
  2. ncbi request reprint Visual contrast sensitivity alterations in inferred magnocellular pathways and anomalous perceptual experiences in people at high-risk for psychosis
    Szabolcs Keri
    Semmelweis University, Department of Psychiatry and Psychotherapy, Budapest, Hungary
    Vis Neurosci 24:183-9. 2007
  3. doi request reprint Visual pathway deficit in female fragile X premutation carriers: a potential endophenotype
    Szabolcs Keri
    Semmelweis University, Department of Psychiatry and Psychotherapy, H1083 Budapest, Hungary
    Brain Cogn 69:291-5. 2009
  4. doi request reprint A polymorphism of the neuregulin 1 gene (SNP8NRG243177/rs6994992) affects reactivity to expressed emotion in schizophrenia
    Szabolcs Keri
    Department of Psychiatry and Psychotherapy, Semmelweis University, Budapest, Hungary
    Am J Med Genet B Neuropsychiatr Genet 150:418-20. 2009
  5. ncbi request reprint Critical evaluation of cognitive dysfunctions as endophenotypes of schizophrenia
    S Keri
    Department of Psychiatry, University of Szeged, Szeged, Hungary
    Acta Psychiatr Scand 110:83-91. 2004
  6. ncbi request reprint Vernier threshold in patients with schizophrenia and in their unaffected siblings
    Szabolcs Keri
    University of Szeged, Szeged, Hungary
    Neuropsychology 18:537-42. 2004
  7. ncbi request reprint Feature uncertainty: a novel test to probe prefrontal dysfunction in unaffected siblings of schizophrenia patients
    Szabolcs Keri
    Department of Psychiatry, University of Szeged, Semmelweis u 6, H 6725 Szeged, Hungary
    Neurosci Lett 375:33-6. 2005
  8. ncbi request reprint Dissociation between medial temporal lobe and basal ganglia memory systems in schizophrenia
    Szabolcs Keri
    Department of Psychiatry, University of Szeged, Semmelweis u 6, Szeged, H 6725, Hungary
    Schizophr Res 77:321-8. 2005
  9. ncbi request reprint Habit learning and the genetics of the dopamine D3 receptor: evidence from patients with schizophrenia and healthy controls
    Szabolcs Keri
    Department of Psychiatry, University of Szeged, Szeged, Hungary
    Behav Neurosci 119:687-93. 2005
  10. ncbi request reprint Lateral interactions in the visual cortex of patients with schizophrenia and bipolar disorder
    Szabolcs Keri
    Department of Psychiatry, University of Szeged, Szeged, Hungary
    Psychol Med 35:1043-51. 2005

Collaborators

Detail Information

Publications90

  1. ncbi request reprint [Therapy of mental states at high risk for psychosis: preliminary results from Hungary]
    Szabolcs Keri
    Szegedi Tudomanyegyetem, Szent Gyorgyi Albert Orvos es Gyogyszeresztudomanyi Kozpont, Általános Orvostudományi Kar, Pszichiatriai Klinika, Szeged
    Orv Hetil 147:201-4. 2006
    ..Recent evidence raised the possibility that low-dose antipsychotic treatment during the prodromal phase may prevent the development of full-blown psychosis...
  2. ncbi request reprint Visual contrast sensitivity alterations in inferred magnocellular pathways and anomalous perceptual experiences in people at high-risk for psychosis
    Szabolcs Keri
    Semmelweis University, Department of Psychiatry and Psychotherapy, Budapest, Hungary
    Vis Neurosci 24:183-9. 2007
    ....
  3. doi request reprint Visual pathway deficit in female fragile X premutation carriers: a potential endophenotype
    Szabolcs Keri
    Semmelweis University, Department of Psychiatry and Psychotherapy, H1083 Budapest, Hungary
    Brain Cogn 69:291-5. 2009
    ..These results suggest that the deficit of the M pathway is an endophenotype of fragile X syndrome...
  4. doi request reprint A polymorphism of the neuregulin 1 gene (SNP8NRG243177/rs6994992) affects reactivity to expressed emotion in schizophrenia
    Szabolcs Keri
    Department of Psychiatry and Psychotherapy, Semmelweis University, Budapest, Hungary
    Am J Med Genet B Neuropsychiatr Genet 150:418-20. 2009
    ..These results raise the possibility that there is a significant gene by environment interaction regarding SNP8NRG243177/rs6994992 and psychosocial stress...
  5. ncbi request reprint Critical evaluation of cognitive dysfunctions as endophenotypes of schizophrenia
    S Keri
    Department of Psychiatry, University of Szeged, Szeged, Hungary
    Acta Psychiatr Scand 110:83-91. 2004
    ..The aim of this study was to investigate whether recent evidence indeed suggests that cognitive dysfunctions are potent indicators of specific genetic traits that represent susceptibility for schizophrenia...
  6. ncbi request reprint Vernier threshold in patients with schizophrenia and in their unaffected siblings
    Szabolcs Keri
    University of Szeged, Szeged, Hungary
    Neuropsychology 18:537-42. 2004
    ..In the isoluminant blue-on-yellow and high contrast achromatic conditions, there were no significant differences between the experimental groups. These results suggest that the deficit of M pathway is an endophenotype of schizophrenia...
  7. ncbi request reprint Feature uncertainty: a novel test to probe prefrontal dysfunction in unaffected siblings of schizophrenia patients
    Szabolcs Keri
    Department of Psychiatry, University of Szeged, Semmelweis u 6, H 6725 Szeged, Hungary
    Neurosci Lett 375:33-6. 2005
    ..These results suggest that anterior cingulate dysfunction is a potential endophenotype of schizophrenia...
  8. ncbi request reprint Dissociation between medial temporal lobe and basal ganglia memory systems in schizophrenia
    Szabolcs Keri
    Department of Psychiatry, University of Szeged, Semmelweis u 6, Szeged, H 6725, Hungary
    Schizophr Res 77:321-8. 2005
    ..High-dose first generation antipsychotics may disrupt BG-dependent learning by blocking dopaminergic neurotransmission in the nigro-stiratal system...
  9. ncbi request reprint Habit learning and the genetics of the dopamine D3 receptor: evidence from patients with schizophrenia and healthy controls
    Szabolcs Keri
    Department of Psychiatry, University of Szeged, Szeged, Hungary
    Behav Neurosci 119:687-93. 2005
    ..Learning rate was normal in patients with schizophrenia. These results suggest that the DRD3 variant containing glycine is associated with more efficient striatal habit learning in healthy controls and patients with schizophrenia...
  10. ncbi request reprint Lateral interactions in the visual cortex of patients with schizophrenia and bipolar disorder
    Szabolcs Keri
    Department of Psychiatry, University of Szeged, Szeged, Hungary
    Psychol Med 35:1043-51. 2005
    ..The purpose of this study was to investigate the functional integrity of lateral connections in early visual areas of patients with schizophrenia and type I bipolar disorder with a history of psychosis...
  11. ncbi request reprint Anomalous visual experiences, negative symptoms, perceptual organization and the magnocellular pathway in schizophrenia: a shared construct?
    Szabolcs Keri
    University of Szeged, Department of Psychiatry, Szeged, Hungary
    Psychol Med 35:1445-55. 2005
    ....
  12. ncbi request reprint Visual-perceptual dysfunctions are possible endophenotypes of schizophrenia: evidence from the psychophysical investigation of magnocellular and parvocellular pathways
    Szabolcs Keri
    Department of Psychiatry, University of Szeged, Szeged, and Bács Kiskun County Hospital, Kecskemet, Hungary
    Neuropsychology 19:649-56. 2005
    ..Visual-perceptual and neuropsychological data did not correlate. In conclusion, M pathway dysfunction is a potential endophenotype of schizophrenia...
  13. ncbi request reprint Development of visual motion perception in children of patients with schizophrenia and bipolar disorder: a follow-up study
    Szabolcs Keri
    Department of Psychiatry, University of Szeged, Szeged, Hungary Department of Physiology, University of Szeged, Szeged, Hungary
    Schizophr Res 82:9-14. 2006
    ..These results suggest that the progressive developmental abnormality of motion-sensitive visual areas may be a characteristic feature of schizophrenia-vulnerability...
  14. ncbi request reprint Vernier threshold and the parallel visual pathways in bipolar disorder: a follow-up study
    Szabolcs Keri
    Departments of Psychiatry, University of Szeged, Szeged, Hungary
    Prog Neuropsychopharmacol Biol Psychiatry 31:86-91. 2007
    ..Further studies are necessary to separately assess cortical and precortical stages of information-processing, and to exclude the possibility of general motivational and attentional impairments...
  15. ncbi request reprint Recognition of complex mental states in patients with alcoholism after long-term abstinence
    Adrienne Mátyássy
    Bács Kiskun County Hospital, Psychiatry Center, Departments of Psychiatry, University of Szeged, Semmelweis u 6, Szeged, H 6725, Hungary
    Alcohol Alcohol 41:512-4. 2006
    ..In this study, we investigated the recognition of complex social emotions and mental states in patients with alcoholism after long-term abstinence and healthy control subjects...
  16. ncbi request reprint Spatial frequency processing in schizophrenia: trait or state marker?
    Imre Kiss
    Department of Psychiatry, University of Szeged, Hungary
    J Abnorm Psychol 115:636-8. 2006
    ..However, the deficit was restricted to low spatial frequencies (0.5 cycles/degree), which suggests that this deficit is a trait marker of schizophrenia...
  17. ncbi request reprint [Diagnosis and treatment of mental states at high risk for psychosis]
    Szabolcs Keri
    Szegedi Tudomanyegyetem, Szent Gyorgyi Albert Orvos es Gyogyszeresztudomanyi Kozpont, Pszichiatriai Klinika, Szeged, Hungary
    Psychiatr Hung 21:130-7. 2006
    ..Persons at increased risk of psychosis should be offered long-term follow-up and care and an "open doors" policy in the case of worsening symptoms and crisis...
  18. ncbi request reprint [Prevention of schizophrenia]
    Szabolcs Keri
    Szegedi Tudomanyegyetem, Szent Györgyi Albert Orvos és Gyógyszerésztudományi Centrum, Általános Orvostudományi Kar, Pszichiatriai Klinika, Szeged
    Orv Hetil 145:59-65. 2004
    ..In this paper, the authors review these vulnerability markers, providing a scientifically founded and clinically oriented framework for the prevention of schizophrenia...
  19. ncbi request reprint Interactive memory systems and category learning in schizophrenia
    Szabolcs Keri
    Department of Psychiatry and Psychotherapy, Semmelweis University, Ballassa u 6, H1083 Budapest, Hungary
    Neurosci Biobehav Rev 32:206-18. 2008
    ....
  20. doi request reprint Oxytocin response in a trust game and habituation of arousal
    Szabolcs Keri
    University of Szeged, Faculty of Medicine, Department of Physiology, Szeged, HungaryNational Psychiatry Center, Budapest, Hungary
    Physiol Behav 102:221-4. 2011
    ..This relationship was absent in the case of neutral (trust-unrelated) oxytocin level. These results suggest that the habituation of autonomic arousal is closely related to oxytocin released during trust-related social interactions...
  21. ncbi request reprint Are Alzheimer's disease patients able to learn visual prototypes?
    S Keri
    Department of Psychiatry, University of Szeged, Semmelweis u 6, 6725, Szeged, Hungary
    Neuropsychologia 39:1218-23. 2001
    ....
  22. ncbi request reprint Intact prototype learning in schizophrenia
    S Keri
    University of Szeged, Department of Psychiatry, 6725 Semmelweis u 6, Szeged, Hungary
    Schizophr Res 52:261-4. 2001
    ..These findings are against the hypothesis of a pure generalized cognitive dysfunction in schizophrenia, providing preliminary evidence for intact neocortical mechanisms related to perceptual classification functions...
  23. doi request reprint Fragile X protein expression is linked to visual functions in healthy male volunteers
    S Keri
    Department of Physiology, University of Szeged, Szeged, Hungary National Psychiatry Center, Budapest, Hungary
    Neuroscience 192:345-50. 2011
    ..These results suggest that healthy persons with lower peripheral FMRP expression display a visual phenotype similar to that described in patients with FXS...
  24. ncbi request reprint Visual information processing in patients with schizophrenia: evidence for the impairment of central mechanisms
    S Keri
    Department of Psychiatry, University of Szeged, Hungary
    Neurosci Lett 293:69-71. 2000
    ..Instead, deficient cortical interactions of rapidly changing environmental signals may be involved...
  25. ncbi request reprint Probabilistic classification learning in Tourette syndrome
    Szabolcs Keri
    Department of Psychiatry, University of Szeged, H 6725 Semmelweis u 6, Szeged, Hungary
    Neuropsychologia 40:1356-62. 2002
    ..The classification performance and the severity of tics were independent of the explicit knowledge obtained during the test...
  26. pmc {alpha}-Synuclein gene duplication impairs reward learning
    Szabolcs Keri
    Department of Physiology, University of Szeged, Hungary
    Proc Natl Acad Sci U S A 107:15992-4. 2010
    ..These results demonstrate that a copy number variation of the SNCA gene is associated with selective impairments on reinforcement learning in asymptomatic carriers without the motor symptoms of Parkinson disease...
  27. ncbi request reprint Spatiotemporal visual processing in schizophrenia
    Szabolcs Keri
    Departments of Psychiatry, University of Szeged, Szeged, Hungary
    J Neuropsychiatry Clin Neurosci 14:190-6. 2002
    ..These results suggest that the hypodopaminergic state induced by antipsychotic medication may produce parkinsonian visual impairments in schizophrenia patients...
  28. ncbi request reprint Early visual impairment is independent of the visuocognitive and memory disturbances in Alzheimer's disease
    S Keri
    Department of Psychiatry, Albert Szent Gyorgyi Medical University, Szeged, Hungary
    Vision Res 39:2261-5. 1999
    ..There was no significant correlation between the CS and the memory disturbances. The results suggest that early visual impairment and higher-level cognitive disturbances are independent in AD...
  29. ncbi request reprint Remitted schizophrenia-spectrum patients with spared working memory show information processing abnormalities
    S Keri
    University of Szeged, Department of Psychiatry, Hungary
    Eur Arch Psychiatry Clin Neurosci 251:60-5. 2001
    ..These results suggest that the BM dysfunction is a trait marker of schizophrenia-spectrum disorders and may be present in the absence of working memory abnormalities...
  30. ncbi request reprint The cognitive neuroscience of category learning
    Szabolcs Keri
    Department of Psychiatry, University of Szeged, Semmelweis u 6, H 6725, Szeged, Hungary
    Brain Res Brain Res Rev 43:85-109. 2003
    ..Category learning tasks are suitable for mapping damaged brain systems in clinical populations...
  31. ncbi request reprint Genetics, psychology, and determinism
    Szabolcs Keri
    University of Szeged
    Am Psychol 58:319. 2003
  32. ncbi request reprint Abstraction is impaired at the perceptual level in schizophrenic patients
    S Keri
    Department of Psychiatry, Albert Szent Gyorgyi Medical University, Szeged, Hungary
    Neurosci Lett 243:93-6. 1998
    ..These findings suggest that the perceptual learning of categories, but not free classification judgements are impaired in schizophrenia, and that this impairment is not due to pure attentional disturbances...
  33. doi request reprint Genes for psychosis and creativity: a promoter polymorphism of the neuregulin 1 gene is related to creativity in people with high intellectual achievement
    Szabolcs Keri
    Semmelweis University, Budapest H1083, Hungary
    Psychol Sci 20:1070-3. 2009
    ..Intriguingly, the highest creative achievements and creative-thinking scores were found in people who carried the T/T genotype, which was previously shown to be related to psychosis risk and altered prefrontal activation...
  34. doi request reprint Suppression of the P50 evoked response and neuregulin 1-induced AKT phosphorylation in first-episode schizophrenia
    Szabolcs Keri
    Department of Psychiatry and Psychotherapy, Semmelweis University, Hungary
    Am J Psychiatry 167:444-50. 2010
    ..The aim of this study was to explore the relationship between this phenotype and neuregulin 1-related intracellular signaling processes...
  35. ncbi request reprint Dissociation between attentional set shifting and habit learning: a longitudinal case study
    Szabolcs Keri
    Department of Psychiatry, University of Szeged, Szeged, Hungary
    Neurocase 8:219-25. 2002
    ..The three control patients with damage to the parietal lobe displayed normal learning rates in PCL. These results suggest that separate frontostriatal mechanisms exist for attentional set shifting and habit learning...
  36. ncbi request reprint [Learning cognitive skills in depression: the effect of context-change]
    Patrícia Polgár
    Semmelweis Egyetem, Pszichiatriai es Pszichoterapias Klinika, Budapest, Hungary
    Psychiatr Hung 22:271-5. 2007
    ..While cognitive functions have been widely studied, much less is known about implicit learning in depression...
  37. ncbi request reprint How to find the way out from four rooms? The learning of "chaining" associations may shed light on the neuropsychology of the deficit syndrome of schizophrenia
    Patrícia Polgár
    Semmelweis University, Department of Psychiatry and Psychotherapy, Budapest, H1083, Balassa u 6, Hungary
    Schizophr Res 99:200-7. 2008
    ..These results indicate that the deficit syndrome is associated with prominently impaired stimulus-response reinforcement learning, which may indicate abnormal functioning of basal ganglia circuits...
  38. ncbi request reprint Sensitivity to reward and punishment and the prefrontal cortex in major depression
    Anita Must
    Department of Psychiatry, Albert Szent Gyorgyi Medical and Pharmaceutical Center, University of Szeged, Semmelweis u 6, H 6725, Szeged, Hungary
    J Affect Disord 90:209-15. 2006
    ..Patients with major depressive disorder (MDD) show neuropsychological impairments, including deficient executive functions and altered sensitivity to reward and punishment...
  39. ncbi request reprint The effects of reward and punishment contingencies on decision-making in multiple sclerosis
    Helga Nagy
    Department of Neurology, Albert Szent Gybrgyi Medical and Pharmaceutical Center, University of Szeged, Szeged, Hungary
    J Int Neuropsychol Soc 12:559-65. 2006
    ....
  40. ncbi request reprint Role of dopamine D3 receptor (DRD3) and dopamine transporter (DAT) polymorphism in cognitive dysfunctions and therapeutic response to atypical antipsychotics in patients with schizophrenia
    Gyorgy Szekeres
    Department of Psychiatry, University of Szeged, Szeged, Hungary
    Am J Med Genet B Neuropsychiatr Genet 124:1-5. 2004
    ..These results suggest that the S/S genotype of the DRD3 is associated with worse therapeutic response and more severe executive dysfunctions in patients with schizophrenia...
  41. ncbi request reprint Theory of mind and motion perception in schizophrenia
    Oguz Kelemen
    Psychiatry Center, Bács Kiskun County Hospital, Kecskemet, Hungary
    Neuropsychology 19:494-500. 2005
    ..This suggests that ToM deficits are related to motion perception dysfunctions, which indicates a possible role of motion-sensitive areas in the pathophysiology of schizophrenia...
  42. ncbi request reprint How well do patients with schizophrenia track multiple moving targets?
    Oguz Kelemen
    Bács Kiskun Country Hospital, Kecskemet, Hungary
    Neuropsychology 21:319-25. 2007
    ..These results suggest that multiple-object tracking is impaired in schizophrenia, and that it is specifically associated with motion perception and spatial working memory...
  43. ncbi request reprint Perceptual and cognitive effects of antipsychotics in first-episode schizophrenia: the potential impact of GABA concentration in the visual cortex
    Oguz Kelemen
    Bács Kiskun County Hospital, Psychiatry Center, Kecskemet, Hungary
    Prog Neuropsychopharmacol Biol Psychiatry 47:13-9. 2013
    ..The prominent dampening effect on low spatial frequency in the steady-pedestal test might indicate the normalization of putatively overactive magnocellular retino-geniculo-cortical pathways...
  44. doi request reprint The neuropsychology of borderline personality disorder: relationship with clinical dimensions and comparison with other personality disorders
    Imola Seres
    Semmelweis University, Department of Psychiatry and Psychotherapy, Budapest, H1083, Hungary
    J Pers Disord 23:555-62. 2009
    ..These results suggest that borderline patients are impaired in neuropsychological domains sensitive for frontal and temporal lobe functioning, and this deficit is related to impulsivity...
  45. ncbi request reprint Abnormal neurological signs, visual contrast sensitivity, and the deficit syndrome of schizophrenia
    Csongor Cimmer
    University of Szeged, Department of Psychiatry, Szeged, Hungary
    Prog Neuropsychopharmacol Biol Psychiatry 30:1225-30. 2006
    ..These results suggest that early-stage perceptual dysfunctions, which may reflect the abnormality of precortical magnocellular visual pathways, are related to a specific group of abnormal neurological signs...
  46. pmc The relationship among neuregulin 1-stimulated phosphorylation of AKT, psychosis proneness, and habituation of arousal in nonclinical individuals
    Szabolcs Keri
    Department of Psychiatry and Psychotherapy, Semmelweis University, Balassa u 6, Budapest H1083, Hungary
    Schizophr Bull 37:141-7. 2011
    ....
  47. ncbi request reprint Lateral interactions and speed of information processing in highly functioning multiple sclerosis patients
    Helga Nagy
    Department of Neurology, Faculty of Medicine, Albert Szent Gyorgyi Medical and Pharmaceutical Center, Szeged, Hungary
    Cogn Behav Neurol 20:107-12. 2007
    ..In conclusion, the detection of briefly presented, low-contrast visual stimuli was selectively impaired in multiple sclerosis. Lateral interactions between target and flankers robustly facilitated target detection in the patient group...
  48. ncbi request reprint [Correlation between the effectiveness of atypical antipsychotics and dopamine D3 receptor polymorphism in schizophrenia]
    Gyorgy Szekeres
    Szegedi Tudomanyegyetem, Pszichiatriai Klinika, H 6725 Szeged, Semmelweis u 6
    Ideggyogy Sz 55:377-81. 2002
    ..In this naturalistic study the authors investigated the relationship between this polymorphism and the therapeutic response to atypical antipsychotics...
  49. doi request reprint Associative learning in deficit and nondeficit schizophrenia
    Márta Farkas
    Department of Psychiatry and Psychotherapy, Semmelweis University, Budapest, Hungary
    Neuroreport 19:55-8. 2008
    ..These results suggest that the enduring negative symptoms of deficit patients may be related to decreased response to cognitive feedback and deficient basal ganglia functioning...
  50. doi request reprint The hippocampus plays a role in the recognition of visual scenes presented at behaviorally relevant points in time: evidence from amnestic mild cognitive impairment (aMCI) and healthy controls
    András Szamosi
    National Psychiatry Center, Budapest, Hungary
    Cortex 49:1892-900. 2013
    ..These results suggest that the hippocampus plays an essential role in the formation of memory traces of the visual environment when people concurrently perform a target task at behaviorally relevant points in time...
  51. doi request reprint How does the hippocampal formation mediate memory for stimuli processed by the magnocellular and parvocellular visual pathways? Evidence from the comparison of schizophrenia and amnestic mild cognitive impairment (aMCI)
    Szabolcs Keri
    National Psychiatry Center, Budapest, Hungary University of Szeged, Faculty of Medicine, Department of Physiology, Dom sq 10, Szeged, Hungary
    Neuropsychologia 50:3193-9. 2012
    ..These results suggest an interaction between M-biased perceptual processing and short-term relational memory in schizophrenia, which may be associated with the structural alteration of the right hippocampus...
  52. doi request reprint Delay discounting of reward and caudate nucleus volume in individuals with α-synuclein gene duplication before and after the development of Parkinson's disease
    András Szamosi
    National Psychiatry Center, Semmelweis University, Budapest, Hungary
    Neurodegener Dis 11:72-8. 2013
    ..We investigated delay discounting of reward and caudate volume in SNCA gene duplication carriers before and after the development of PD...
  53. doi request reprint The role of attention and immediate memory in vulnerability to interpersonal criticism during family transactions in schizophrenia
    Szabolcs Keri
    Department of Psychiatry and Psychotherapy, Semmelweis University, Budapest, Hungary
    Br J Clin Psychol 48:21-9. 2009
    ..The purpose of this study was to investigate the possibility that cognitive deficits are associated with the emergence of unusual thoughts during a stressful family transaction...
  54. doi request reprint Attentional modulation of perceptual organisation in schizophrenia
    Szabolcs Keri
    Semmelweis University, Department of Psychiatry and Psychotherapy, Budapest, Hungary
    Cogn Neuropsychiatry 14:77-86. 2009
    ..Previous studies indicated impaired perceptual organisation in schizophrenia. This study investigated lateral connection and attentional modulation in early visual cortex of schizophrenia patients...
  55. doi request reprint Neuregulin 1-stimulated phosphorylation of AKT in psychotic disorders and its relationship with neurocognitive functions
    Szabolcs Keri
    Semmelweis University, Department of Psychiatry and Psychotherapy, Budapest, Hungary
    Neurochem Int 55:606-9. 2009
    ..In conclusion, NRG1-induced AKT phosphorylation is decreased in schizophrenia but not in other psychotic disorders. This peripheral marker is not related to neurocognitive functions...
  56. ncbi request reprint Can somatosensory evoked potentials predict disease course in early multiple sclerosis patients?
    Helga Nagy
    Department of Neurology, University of Szeged, Hungary
    Ideggyogy Sz 66:191-5. 2013
    ..Multiple sclerosis (MS) is an autoimmune degenerating disease, where myelin degradation as well as axonal loss is present...
  57. doi request reprint Associative learning, acquired equivalence, and flexible generalization of knowledge in mild Alzheimer disease
    Nikoletta Bodi
    Department of Psychiatry and Psychotherapy, Semmelweis University, Budapest, Hungary
    Cogn Behav Neurol 22:89-94. 2009
    ..In this study, we tested the possibility that acquired equivalence learning is a sensitive marker of mild Alzheimer disease (AD)...
  58. ncbi request reprint Anomalous subjective experience and psychosis risk in young depressed patients
    Erika Szily
    Semmelweis University, Department of Psychiatry and Psychotherapy, Budapest, Hungary
    Psychopathology 42:229-35. 2009
    ..The aim of this study was to determine differences in subjective experience and social perception in young depressed patients with and without psychosis risk...
  59. ncbi request reprint Electrophysiological correlates of visual categorization: evidence for cognitive dysfunctions in early Parkinson's disease
    Andrea Antal
    Department of Physiology, University of Szeged, Faculty of Medicine, Szeged, Hungary
    Brain Res Cogn Brain Res 13:153-8. 2002
    ..These results raise the possibility for striatal contributions to visual categorization and may provide a novel protocol for further clinical studies...
  60. ncbi request reprint [Neuropsychological assessment of the prefrontal cortex in major depressive disorder]
    Anita Must
    Szegedi Tudomanyegyetem, Szent Gyorgyi Albert Orvos es Gyogyszeresztudomanyi Kozpont, Pszichiatriai Klinika, Semmelweis u 6, Szeged, 6725 Hungary
    Psychiatr Hung 20:412-6. 2005
    ..Our results suggest a global impairment of the PFC in depression, which includes the dorsolateral and ventromedial regions...
  61. ncbi request reprint The scotopic low-frequency spatial contrast sensitivity develops in children between the ages of 5 and 14 years
    Gyorgy Benedek
    Department of Physiology, University of Szeged, Szeged, Hungary
    Neurosci Lett 345:161-4. 2003
    ..The scotopic CS exhibited slower development than the photopic CS. These results suggest the late maturation of the magnocellular visual pathway...
  62. doi request reprint General functioning predicts reward and punishment learning in schizophrenia
    Zsuzsanna Somlai
    Semmelweis University, Department of Psychiatry and Psychotherapy, Budapest, Hungary
    Schizophr Res 127:131-6. 2011
    ..These results suggest a close relationship between reinforcement learning and general psychosocial functioning in schizophrenia...
  63. ncbi request reprint The C270T polymorphism of the brain-derived neurotrophic factor gene is associated with schizophrenia
    Gyorgy Szekeres
    Department of Psychiatry, University of Szeged, Semmelweis u 6, H 6725, Szeged, Hungary
    Schizophr Res 65:15-8. 2003
    ..Further studies are warranted to elucidate the significance of this finding in the pathophysiology of schizophrenia...
  64. ncbi request reprint Corticostriatal circuitry mediates fast-track visual categorization
    Andrea Antal
    Department of Physiology, University of Szeged, Szeged, Hungary
    Brain Res Cogn Brain Res 13:53-9. 2002
    ..This supports the hypothesis that corticostriatal circuits mediate perceptual feature weighting and integration in complex situations requiring categorical judgements...
  65. ncbi request reprint Cognitive sequence learning in Parkinson's disease and amnestic mild cognitive impairment: Dissociation between sequential and non-sequential learning of associations
    Helga Nagy
    University of Szeged, Department of Neurology, Szeged, Hungary
    Neuropsychologia 45:1386-92. 2007
    ..In contrast, MTL dysfunctions may result in a non-sequential learning of associations, which may indicate a loss of contextual information...
  66. ncbi request reprint Major depressive disorder, serotonin transporter, and personality traits: why patients use suboptimal decision-making strategies?
    Anita Must
    Department of Psychiatry, Albert Szent Gyorgyi Medical and Pharmaceutical Center, University of Szeged, Szeged, Hungary
    J Affect Disord 103:273-6. 2007
    ..Patients with major depressive disorder (MDD) show suboptimal decision-making strategy in experimental game situations. The influence of personality traits and genetic variations on decision-making is not known...
  67. doi request reprint Are patients with schizophrenia rational maximizers? Evidence from an ultimatum game study
    Gabor Csukly
    Semmelweis University, Department of Psychiatry and Psychotherapy, Budapest, Hungary
    Psychiatry Res 187:11-7. 2011
    ..These results suggest that schizophrenia patients are impaired in socioeconomic interactions requiring emotion recognition and decision-making, which may result in unstable behavioral strategies...
  68. doi request reprint Trust game reveals restricted interpersonal transactions in patients with borderline personality disorder
    Zsolt Unoka
    Semmelweis University, Department of Psychiatry and Psychotherapy, Budapest, Hungary
    J Pers Disord 23:399-409. 2009
    ..These results suggest that patients with BPD exhibit less trust during interpersonal interactions, which may be related to stress-related paranoia, dissociation, identity disturbance, and problems in interpersonal relationships...
  69. pmc The effect of dopamine agonists on adaptive and aberrant salience in Parkinson's disease
    Helga Nagy
    Department of Neurology, Semmelweis University, Budapest, Hungary
    Neuropsychopharmacology 37:950-8. 2012
    ....
  70. doi request reprint Parallel development of contour integration and visual contrast sensitivity at low spatial frequencies
    Krisztina Benedek
    Department of Neurology, University of Szeged, Szeged, Hungary
    Neurosci Lett 472:175-8. 2010
    ..These results raise the possibility that the development of low spatial frequency processing may affect attentional mechanisms, which may have an impact on early contour integration...
  71. doi request reprint Neuregulin 1-induced AKT phosphorylation in monozygotic twins discordant for schizophrenia
    Imola Seres
    University of Szeged, Department of Physiology, Szeged, Hungary
    Neurochem Int 56:906-10. 2010
    ..These results indicate that impaired AKT-related intracellular signaling is partly related to the developed illness and cannot fully be explained by the genetic background of schizophrenia...
  72. ncbi request reprint The prognostic value of dopamine receptor occupancy by [123I]IBZM-SPECT in schizophrenic patients treated with quetiapine
    Laszlo Pavics
    Department of Nuclear Medicine, University of Szeged, Hungary
    Nucl Med Rev Cent East Eur 7:129-33. 2004
    ..In the present study D2 receptor occupancy was investigated in quetiapine treated schizophrenic patients for the detection of a relationship between the scintigraphic pattern and clinical signs and symptoms...
  73. doi request reprint The perception of biological and mechanical motion in female fragile X premutation carriers
    Szabolcs Keri
    Semmelweis University, Department of Psychiatry and Psychotherapy, Budapest, Hungary
    Brain Cogn 72:197-201. 2010
    ..These results suggest that motion perception deficits are detectable in fragile X premutation carriers, and that the impairment of biological motion perception is associated with depressive symptoms...
  74. ncbi request reprint Light therapy increases visual contrast sensitivity in seasonal affective disorder
    Zoltan Szabo
    Department of Psychiatry, Albert Szent Györgyi Center for Medical and Pharmaceutical Sciences, Faculty of Medicine, University of Szeged, Semmelweis u 6, H 6725 Szeged, Hungary
    Psychiatry Res 126:15-21. 2004
    ..We found no significant difference between the patients and controls either before or after light therapy. These results raise the possibility that light therapy induces retinal sensitization in seasonal affective disorder...
  75. doi request reprint When doors of perception open: visual contrast sensitivity in never-medicated, first-episode schizophrenia
    Imre Kiss
    National Psychiatric Center, Semmelweis University, Balassa u 6, 1083, Budapest, Hungary
    J Abnorm Psychol 119:586-93. 2010
    ..25 and 0.5 cycles/degree). These results indicate the heightened sensitivity of magnocellular pathways in unmedicated first-episode schizophrenia, which may contribute to anomalous perceptual experiences and sensory overloading...
  76. ncbi request reprint Possible role of the basal ganglia in the generation of the N30 potential of the median nerve somatosensory evoked potentials
    Sandor Beniczky
    Department of Neurology, Faculty of Medicine, University of Szeged, Szeged, Hungary
    Ideggyogy Sz 60:392-7. 2007
    ....
  77. doi request reprint Emotion appraisal is modulated by the genetic polymorphism of the serotonin transporter
    Erika Szily
    Department of Psychiatry and Psychotherapy, Semmelweis University, Budapest, Hungary
    J Neural Transm 115:819-22. 2008
    ..There were no such differences in the case of joy. These results indicate that the s-allele of the serotonin transporter gene is associated with a vulnerable cognitive style related to the appraisal of negative emotions...
  78. ncbi request reprint [Parallel processing of visual information]
    Gyorgy Benedek
    Szegedi Tudomanyegyetem, Általános Orvostudományi Kar, Szent Györgyi Albert Orvos és Gyógyszerésztudományi Centrum, Szeged
    Ideggyogy Sz 59:241-8. 2006
    ..Summing it up, the survey provides evidences for the introduction of the novel concept of parallel pathways into the diagnostic aspects of ophthalmology, neurology and psychiatry...
  79. ncbi request reprint Complex hallucinations following occipital lobe damage
    Sandor Beniczky
    Department of Neurology, University of Szeged, Semmelweis u 6, Szeged H 6725, Hungary
    Eur J Neurol 9:175-6. 2002
    ..This illustrates that the phenomenology of hallucinations not necessarily reflects the exact localization of cerebral pathology. Instead, the damaged area may serve as a focus of an abnormally activated neuronal network...
  80. ncbi request reprint Human scotopic spatiotemporal sensitivity: a comparison of psychophysical and electrophysiological data
    Gyorgy Benedek
    Department of Physiology, University of Szeged, Szeged, Hungary
    Doc Ophthalmol 106:201-7. 2003
    ..These results suggest that, under scotopic conditions, human visuospatial processing is characteristically predominated by the functional activity of the magnocellular pathways...
  81. ncbi request reprint Reduced facilitation effect of collinear flankers on contrast detection reveals impaired lateral connectivity in the visual cortex of schizophrenia patients
    Anita Must
    Department of Psychiatry, University of Szeged, Semmelweis u 6, H 6725, Szeged, Hungary
    Neurosci Lett 357:131-4. 2004
    ..Our results therefore suggest abnormal lateral interactions in early visual cortex of schizophrenia patients...
  82. ncbi request reprint Emotion-related brain regions
    Erika Szily
    Semmelweis University, Department of Psychiatry and Psychotherapy, Budapest, Hungary
    Ideggyogy Sz 61:77-86. 2008
    ..In this review, we discuss new results from the functional neuroanatomy of these brain circuits and outline their significance in the emergence of various psychopathological phenomena...
  83. ncbi request reprint Retinal dysfunctions in schizophrenia
    Zita Balogh
    Semmelweis University, Department of Psychiatry and Psychotherapy, Ballassa u 6, H1083, Budapest, Hungary
    Prog Neuropsychopharmacol Biol Psychiatry 32:297-300. 2008
    ..These results indicate that retinal dysfunctions are specific for schizophrenia, as compared with bipolar disorder, and are confined to the acute stage of the illness...
  84. ncbi request reprint The effect of sleep deprivation on median nerve somatosensory evoked potentials
    Daniella Terney
    Clinical Neurophysiology Laboratory, Department of Neurology, Albert Szent Gyorgyi Medical and Pharmaceutical Center, University of Szeged, Hungary
    Neurosci Lett 383:82-6. 2005
    ..Our results indicate that somatosensory processing is altered after sleep deprivation...
  85. ncbi request reprint [Schizophrenia and evolutionary psychopathology]
    Oguz Kelemen
    Bács Kiskun megyei Kórház, Pszichiátriai Osztály, Kecskemet, Hungary
    Psychiatr Hung 22:333-43. 2007
    ..At the end of this article we discuss this last theory in detail listing arguments for and against...
  86. doi request reprint Oxytocin enhances the perception of biological motion in humans
    Szabolcs Keri
    Department of Psychiatry and Psychotherapy, Semmelweis University, Budapest, Hungary
    Cogn Affect Behav Neurosci 9:237-41. 2009
    ..These results suggest that oxytocin specifically modulates the perception of socially relevant stimuli...
  87. ncbi request reprint Sharing secrets: oxytocin and trust in schizophrenia
    Szabolcs Keri
    Department of Psychiatry and Psychotherapy, Semmelweis University, Balassa u 6, Budapest H1083, Hungary
    Soc Neurosci 4:287-93. 2009
    ..These results suggest that decreased trust-related oxytocin release is related to the negative symptoms and may be associated with social withdrawal, isolation, and flattened affect in schizophrenia...
  88. ncbi request reprint Somatosensory evoked potentials correlate with genetics in Huntington's disease
    Sandor Beniczky
    Department of Neurology, University of Szeged, Semmelweis u 6, Szeged, Hungary
    Neuroreport 13:2295-8. 2002
    ....
  89. pmc Reward-learning and the novelty-seeking personality: a between- and within-subjects study of the effects of dopamine agonists on young Parkinson's patients
    Nikoletta Bodi
    Department of Psychiatry and Psychotherapy, Semmelweis University, Budapest, Hungary
    Brain 132:2385-95. 2009
    ....
  90. ncbi request reprint The broken trust and cooperation in borderline personality disorder
    Imola Seres
    Department of Psychiatry and Psychotherapy, Semmelweis University, Budapest, Hungary
    Neuroreport 20:388-92. 2009
    ..Data from functional neuroimaging indicated that the abnormal activation of the anterior insula might be a key factor during these processes, together with the cingulate cortex and the amygdala...