Alan J Pegna

Summary

Country: UK

Publications

  1. ncbi Visual recognition of faces, objects, and words using degraded stimuli: where and when it occurs
    Alan J Pegna
    Neuropsychology Unit, Neurology Clinic, University Hospitals, Geneva, Switzerland
    Hum Brain Mapp 22:300-11. 2004
  2. ncbi Language selection in bilinguals: a spatio-temporal analysis of electric brain activity
    Asaid Khateb
    Laboratory of Experimental Neuropsychology, Department of Neurology, Geneva University Hospitals, Geneva, Switzerland
    Int J Psychophysiol 65:201-13. 2007
  3. ncbi Rhyme processing in the brain: an ERP mapping study
    Asaid Khateb
    Laboratory of Experimental Neuropsychology, Department of Neurology, University Hospital, Geneva, Switzerland
    Int J Psychophysiol 63:240-50. 2007
  4. ncbi Group analysis and the subject factor in functional magnetic resonance imaging: analysis of fifty right-handed healthy subjects in a semantic language task
    Mohamed L Seghier
    Department of Radiology, Geneva University Hospitals, Geneva, Switzerland
    Hum Brain Mapp 29:461-77. 2008
  5. doi Electrophysiological evidence for early non-conscious processing of fearful facial expressions
    Alan J Pegna
    Laboratory of Experimental Neuropsychology, Neuropsychology Unit, University of Geneva, Geneva, Switzerland
    Int J Psychophysiol 70:127-36. 2008
  6. doi Temporal dynamics of awareness for facial identity revealed with ERP
    Melanie Genetti
    Laboratory of Experimental Neuropsychology, Department of Neurology, Geneva University Hospitals, 24 Rue Micheli du Crest, 1211 Geneva 14, Geneva, Switzerland
    Brain Cogn 69:296-305. 2009
  7. doi Visual search for facial expressions of emotion is less affected in simultanagnosia
    Alan J Pegna
    Neuropsychology Unit, Neurology Clinic, Geneva University Hospital, Geneva, Switzerland
    Cortex 44:46-53. 2008
  8. ncbi Dynamics of brain activation during an explicit word and image recognition task: an electrophysiological study
    Asaid Khateb
    Department of Neurology, University Hospital, Geneva, Switzerland
    Brain Topogr 14:197-213. 2002
  9. doi When the brain remembers, but the patient doesn't: converging fMRI and EEG evidence for covert recognition in a case of prosopagnosia
    Stéphane R Simon
    Radiology Department, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
    Cortex 47:825-38. 2011
  10. ncbi A glimpse into your vision
    Sara L Gonzalez Andino
    Electrical Neuroimaging Group, Neurology Department, Geneva University Hospitals, Geneva, Switzerland
    Hum Brain Mapp 28:614-24. 2007

Detail Information

Publications30

  1. ncbi Visual recognition of faces, objects, and words using degraded stimuli: where and when it occurs
    Alan J Pegna
    Neuropsychology Unit, Neurology Clinic, University Hospitals, Geneva, Switzerland
    Hum Brain Mapp 22:300-11. 2004
    ....
  2. ncbi Language selection in bilinguals: a spatio-temporal analysis of electric brain activity
    Asaid Khateb
    Laboratory of Experimental Neuropsychology, Department of Neurology, Geneva University Hospitals, Geneva, Switzerland
    Int J Psychophysiol 65:201-13. 2007
    ..Our results suggest that language selection is achieved through a neural network involving areas implicated in both general cognitive processes and language processing...
  3. ncbi Rhyme processing in the brain: an ERP mapping study
    Asaid Khateb
    Laboratory of Experimental Neuropsychology, Department of Neurology, University Hospital, Geneva, Switzerland
    Int J Psychophysiol 63:240-50. 2007
    ..Our results suggest that, similar to the N400 component that is also induced by mismatch contexts, the N450 might rely on temporal generators...
  4. ncbi Group analysis and the subject factor in functional magnetic resonance imaging: analysis of fifty right-handed healthy subjects in a semantic language task
    Mohamed L Seghier
    Department of Radiology, Geneva University Hospitals, Geneva, Switzerland
    Hum Brain Mapp 29:461-77. 2008
    ....
  5. doi Electrophysiological evidence for early non-conscious processing of fearful facial expressions
    Alan J Pegna
    Laboratory of Experimental Neuropsychology, Neuropsychology Unit, University of Geneva, Geneva, Switzerland
    Int J Psychophysiol 70:127-36. 2008
    ....
  6. doi Temporal dynamics of awareness for facial identity revealed with ERP
    Melanie Genetti
    Laboratory of Experimental Neuropsychology, Department of Neurology, Geneva University Hospitals, 24 Rue Micheli du Crest, 1211 Geneva 14, Geneva, Switzerland
    Brain Cogn 69:296-305. 2009
    ..Our results suggest that conscious experience emerges in parallel with the activation of a specific neural network that occurs in a time window beginning from about 200 ms...
  7. doi Visual search for facial expressions of emotion is less affected in simultanagnosia
    Alan J Pegna
    Neuropsychology Unit, Neurology Clinic, Geneva University Hospital, Geneva, Switzerland
    Cortex 44:46-53. 2008
    ..These findings corroborate claims that facial expressions of emotion constitute a specific category of stimuli that attract attention more effectively, and are processed prior to attentional engagement...
  8. ncbi Dynamics of brain activation during an explicit word and image recognition task: an electrophysiological study
    Asaid Khateb
    Department of Neurology, University Hospital, Geneva, Switzerland
    Brain Topogr 14:197-213. 2002
    ..These findings suggest that, while sharing an initial common network, recognition of verbal and pictorial stimuli subsequently engage different brain regions during time periods generally allocated to the semantic processing of stimuli...
  9. doi When the brain remembers, but the patient doesn't: converging fMRI and EEG evidence for covert recognition in a case of prosopagnosia
    Stéphane R Simon
    Radiology Department, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
    Cortex 47:825-38. 2011
    ..Furthermore, the results support the view that FFA participates in face individuation...
  10. ncbi A glimpse into your vision
    Sara L Gonzalez Andino
    Electrical Neuroimaging Group, Neurology Department, Geneva University Hospitals, Geneva, Switzerland
    Hum Brain Mapp 28:614-24. 2007
    ..Electrical neuroimaging therefore appears to have the potential to establish what the brain is processing while the stimuli are being seen or categorized, i.e., concurrently with sensory-perceptual processes...
  11. pmc Basic instinct undressed: early spatiotemporal processing for primary sexual characteristics
    Lore B Legrand
    Laboratory of Experimental Neuropsychology, Neuropsychology Unit, Neurology Clinic, Geneva University Hospitals, Geneva, Switzerland
    PLoS ONE 8:e69726. 2013
    ....
  12. ncbi Transient crossed aphasia evidenced by functional brain imagery
    Asaid Khateb
    Neuropsychology Unit, Department of Neurology, Geneva University Hospitals, 24 Rue Micheli du Crest, CH 1211 Geneva 14, Switzerland
    Neuroreport 15:785-90. 2004
    ..In the light of previous studies reporting much frequent bilateral than exclusive right hemisphere representations, we hypothesise that some crossed aphasia cases could occur in subjects with bilateral language representation...
  13. ncbi Processing of semantic categorical and associative relations: an ERP mapping study
    Asaid Khateb
    Neuropsychology Unit, Department of Neurology, University Hospital, 24 Rue Micheli du Crest, Geneva, 14 1211, Switzerland
    Int J Psychophysiol 49:41-55. 2003
    ..Our data suggest that the processing of CR and AR words depend on the same neural network in the LH...
  14. doi Attentional modulation of early ERP components in response to faces: evidence from the attentional blink paradigm
    Alexandra Darque
    Laboratory of Experimental Neuropsychology, Neurology Clinic, Geneva University Hospitals, Switzerland
    Brain Topogr 25:167-81. 2012
    ..This suggests that faces are subjected to an early selection which might allow rapid re-allocation of attention to the stimulus if it is deemed meaningful...
  15. doi Can postictal memory predict postoperative memory in patients with temporal lobe epilepsy?
    Serge Vulliemoz
    EEG and Epilepsy Unit, Neurology Clinic, University Hospital of Geneva HUG and Medical Faculty, University of Geneva, Geneva, Switzerland
    Epilepsia 53:e170-3. 2012
    ..Postictal verbal memory is a useful bedside tool that can help lateralize the epileptic focus. Larger studies are needed to further estimate its predictive value of the postoperative outcome...
  16. ncbi Postictal but not interictal hemispatial neglect in patients with seizures of lateralized onset
    Olga Prilipko
    Neurology Clinic, University Hospitals of Geneva, Switzerland
    Epilepsia 47:2046-51. 2006
    ..Group studies involving patients with seizures with a lateralized focus have demonstrated transient dysfunctions in memory and language; however, so far, only two case reports have described transient neglect after an epileptic seizure...
  17. doi An electrophysiological study of conscious visual perception using progressively degraded stimuli
    Melanie Genetti
    Functional Brain Mapping Laboratory, Department of Fundamental and Clinical Neurosciences, University of Geneva, Geneva, Switzerland
    J Vis 10:10. 2010
    ....
  18. doi Electrophysiological correlates of affective blindsight
    Sara L Gonzalez Andino
    Electrical Neuroimaging Group, Geneva University Hospitals, Geneva, Switzerland
    Neuroimage 44:581-9. 2009
    ....
  19. doi Seeing the phantom: a functional magnetic resonance imaging study of a supernumerary phantom limb
    Asaid Khateb
    Laboratory of Experimental Neuropsychology, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
    Ann Neurol 65:698-705. 2009
    ..Here, we report the case of a left visual, tactile, and intentional SPL caused by right subcortical damage in a nondeluded woman...
  20. ncbi Controlling for interstimulus perceptual variance abolishes N170 face selectivity
    Guillaume Thierry
    School of Psychology, Brigantia Building, Penrallt Road, University of Wales, Bangor, LL57 2AS, UK
    Nat Neurosci 10:505-11. 2007
    ..These results demonstrate early ERP category effects in the visual domain, call into question the face selectivity of the N170 and establish ISPV as a critical factor to control in experiments relying on multitrial averaging...
  21. ncbi An event-related potential component sensitive to images of the human body
    Guillaume Thierry
    School of Psychology, University of Wales, Bangor, Gwynedd LL57 2AS, UK
    Neuroimage 32:871-9. 2006
    ..Thus, the N190 generalizes to some degree to schematic depictions of the human form. Overall, our findings are consistent with intertwined, but functionally distinct, neural representations of the human face and body...
  22. ncbi Clinical assessment of motor function: a processes oriented instrument based on a speed-accuracy trade-off paradigm
    Blaise Christe
    Neuropsychology Unit, Department of Neurology, Geneva University Hospitals and Medical School, Switzerland
    Behav Neurol 18:19-29. 2007
    ....
  23. ncbi Is the right amygdala involved in visuospatial memory? Evidence from MRI volumetric measures
    Alan J Pegna
    Neuropsychology Unit, Neurology Clinic, Geneva, Switzerland
    Eur Neurol 47:148-55. 2002
    ..We suggest that the difficulty encountered in establishing a correlation between right temporal structures and visuospatial memory could come both from the type of test employed and the structures considered...
  24. pmc Early ERP Modulation for Task-Irrelevant Subliminal Faces
    Alan J Pegna
    Laboratory of Experimental Neuropsychology, Neuropsychology Unit, Neurology Clinic, Geneva University Hospital Geneva, Switzerland
    Front Psychol 2:88. 2011
    ..01). Our results confirm that subliminal processing of fearful faces occurs early in the course of visual processing, and more importantly, that this arises even when the subject's attention is engaged in an incidental task...
  25. ncbi Neural processing of illusory and real contours revealed by high-density ERP mapping
    Alan J Pegna
    Functional Brain Mapping Laboratory Neurology Department, University Hospital, 24 rue Micheli du Crest CH 1211 Geneva 14, Switzerland
    Neuroreport 13:965-8. 2002
    ..These results suggest that both IC and RC processing modulate a common network associated with filling-in processes and figure-ground segregation...
  26. ncbi Automatic motor cortex activation for natural as compared to awkward grips of a manipulable object
    Leila S Petit
    Macquarie Centre for Cognitive Science, Macquarie University, Sydney, NSW 2109, Australia
    Exp Brain Res 168:120-30. 2006
    ..We argue that the motor programs that are semantically associated with the object are automatically activated when it is presented in graspable orientations...
  27. ncbi Cerebral processes in mental transformations of body parts: recognition prior to rotation
    Leila S Overney
    Macquarie Centre for Cognitive Science, Macquarie University, Sydney NSW 2109, Australia
    Brain Res Cogn Brain Res 25:722-34. 2005
    ..This result contrasts with mental rotation of objects, which is considered to be a right parietal process...
  28. ncbi Language control and lexical competition in bilinguals: an event-related FMRI study
    Jubin Abutalebi
    Centre for Cognitive Neurosciences, Vita Salute San Raffaele University and Scientific Institute San Raffaele, 20132 Milan, Italy
    Cereb Cortex 18:1496-505. 2008
    ....
  29. ncbi Discriminating emotional faces without primary visual cortices involves the right amygdala
    Alan J Pegna
    Centre for Cognitive Neuroscience, School of Psychology, University of Wales Bangor, Penrallt Road, Gwynedd LL57 2AS, UK alan pegna hcuge ch
    Nat Neurosci 8:24-5. 2005
    ..Functional magnetic resonance imaging showed activation of the right amygdala during the unconscious processing of emotionally expressive faces...
  30. ncbi Variability of fMRI activation during a phonological and semantic language task in healthy subjects
    Mohamed L Seghier
    Department of Radiology, Geneva University Hospital, CH 1211 Geneva, Switzerland
    Hum Brain Mapp 23:140-55. 2004
    ....