Patrik Roser

Summary

Affiliation: Ruhr-University Bochum

Publications

  1. doi request reprint Effects of acute oral Delta9-tetrahydrocannabinol and standardized cannabis extract on the auditory P300 event-related potential in healthy volunteers
    Patrik Roser
    Department of Psychiatry, Ruhr University Bochum, Bochum, Germany
    Eur Neuropsychopharmacol 18:569-77. 2008
  2. doi request reprint Auditory mismatch negativity deficits in long-term heavy cannabis users
    Patrik Roser
    Department of Psychiatry, Ruhr University Bochum, Alexandrinenstr 1, 44791, Bochum, Germany
    Eur Arch Psychiatry Clin Neurosci 260:491-8. 2010
  3. ncbi request reprint Acute effects of Delta9-tetrahydrocannabinol and standardized cannabis extract on the auditory evoked mismatch negativity
    Georg Juckel
    Department of Psychiatry, University Hospital Charite, Berlin, Germany
    Schizophr Res 97:109-17. 2007
  4. doi request reprint Psychomotor performance in relation to acute oral administration of Delta9-tetrahydrocannabinol and standardized cannabis extract in healthy human subjects
    Patrik Roser
    Department of Psychiatry, Ruhr University Bochum, Bochum, Germany
    Eur Arch Psychiatry Clin Neurosci 259:284-92. 2009
  5. doi request reprint Alterations of theory of mind network activation in chronic cannabis users
    Patrik Roser
    Department of Psychiatry, LWL University Hospital, Ruhr University Bochum, Germany
    Schizophr Res 139:19-26. 2012
  6. doi request reprint Impaired facial emotion recognition in a ketamine model of psychosis
    Andreas Ebert
    Department of Psychiatry, LWL University Hospital, Ruhr University Bochum, Bochum, Germany
    Psychiatry Res 200:724-7. 2012
  7. ncbi request reprint Antipsychotic-like effects of cannabidiol and rimonabant: systematic review of animal and human studies
    Patrik Roser
    Department of Psychiatry, LWL University Hospital, Ruhr University Bochum, Alexandrinenstr 1 3, 44791 Bochum, Germany
    Curr Pharm Des 18:5141-55. 2012
  8. doi request reprint Mental state decoding and mental state reasoning in recently detoxified alcohol-dependent individuals
    Patrizia Thoma
    Department of Neuropsychology, Institute of Cognitive Neuroscience, Ruhr University Bochum, Universitatsstrase 150, D 44780 Bochum, Germany
    Psychiatry Res 205:232-40. 2013
  9. ncbi request reprint Neurophysiological effects of cannabinoids: implications for psychosis research
    Jurgen Gallinat
    Department of Psychiatry, Charite University Medicine Berlin, Campus Charite Mitte, Berlin, Germany
    Curr Pharm Des 18:4938-49. 2012
  10. doi request reprint No association between chronic cannabis use and loudness dependence of auditory evoked potentials as indicator of central serotonergic neurotransmission
    Patrik Roser
    Department of Psychiatry, Ruhr University, Alexandrinenstr 1, 44791 Bochum, Germany
    Neurosci Lett 465:113-7. 2009

Collaborators

Detail Information

Publications15

  1. doi request reprint Effects of acute oral Delta9-tetrahydrocannabinol and standardized cannabis extract on the auditory P300 event-related potential in healthy volunteers
    Patrik Roser
    Department of Psychiatry, Ruhr University Bochum, Bochum, Germany
    Eur Neuropsychopharmacol 18:569-77. 2008
    ..It can be speculated whether the lack of effect of CBD may be due to an insufficient dose used or to an involvement of neurotransmitter systems in P300 generation which are not influenced by CBD...
  2. doi request reprint Auditory mismatch negativity deficits in long-term heavy cannabis users
    Patrik Roser
    Department of Psychiatry, Ruhr University Bochum, Alexandrinenstr 1, 44791, Bochum, Germany
    Eur Arch Psychiatry Clin Neurosci 260:491-8. 2010
    ..The results indicate that chronic cannabis use may cause a specific impairment of auditory information processing. In particular, duration and quantity of cannabis use could be identified as important factors of deficient MMN generation...
  3. ncbi request reprint Acute effects of Delta9-tetrahydrocannabinol and standardized cannabis extract on the auditory evoked mismatch negativity
    Georg Juckel
    Department of Psychiatry, University Hospital Charite, Berlin, Germany
    Schizophr Res 97:109-17. 2007
    ..This effect may be relevant for auditory cortex activity in particular because only MMN amplitudes at the central, but not at the frontal electrodes were enhanced under cannabis...
  4. doi request reprint Psychomotor performance in relation to acute oral administration of Delta9-tetrahydrocannabinol and standardized cannabis extract in healthy human subjects
    Patrik Roser
    Department of Psychiatry, Ruhr University Bochum, Bochum, Germany
    Eur Arch Psychiatry Clin Neurosci 259:284-92. 2009
    ..This result may be due to functional changes involving GABAergic and glutamatergic neurotransmission within the corpus callosum...
  5. doi request reprint Alterations of theory of mind network activation in chronic cannabis users
    Patrik Roser
    Department of Psychiatry, LWL University Hospital, Ruhr University Bochum, Germany
    Schizophr Res 139:19-26. 2012
    ..These activation patterns resemble those found in at-risk populations, suggesting that cannabis use can affect the processing of social information similar to other risk factor constellations for psychosis...
  6. doi request reprint Impaired facial emotion recognition in a ketamine model of psychosis
    Andreas Ebert
    Department of Psychiatry, LWL University Hospital, Ruhr University Bochum, Bochum, Germany
    Psychiatry Res 200:724-7. 2012
    ..Given the role of glutamatergic neurotransmission in schizophrenia-related cognitive impairments, we investigated the effects of the glutamatergic NMDA receptor antagonist ketamine on facial emotion recognition...
  7. ncbi request reprint Antipsychotic-like effects of cannabidiol and rimonabant: systematic review of animal and human studies
    Patrik Roser
    Department of Psychiatry, LWL University Hospital, Ruhr University Bochum, Alexandrinenstr 1 3, 44791 Bochum, Germany
    Curr Pharm Des 18:5141-55. 2012
    ..The results predominantly confirm the hypothesis of an antipsychotic activity of both cannabinoids. In comparison, cannabidiol appears to be superior to rimonabant with a pharmacological profile similar to atypical antipsychotic drugs...
  8. doi request reprint Mental state decoding and mental state reasoning in recently detoxified alcohol-dependent individuals
    Patrizia Thoma
    Department of Neuropsychology, Institute of Cognitive Neuroscience, Ruhr University Bochum, Universitatsstrase 150, D 44780 Bochum, Germany
    Psychiatry Res 205:232-40. 2013
    ..Findings ought to be incorporated into current treatment strategies...
  9. ncbi request reprint Neurophysiological effects of cannabinoids: implications for psychosis research
    Jurgen Gallinat
    Department of Psychiatry, Charite University Medicine Berlin, Campus Charite Mitte, Berlin, Germany
    Curr Pharm Des 18:4938-49. 2012
    ....
  10. doi request reprint No association between chronic cannabis use and loudness dependence of auditory evoked potentials as indicator of central serotonergic neurotransmission
    Patrik Roser
    Department of Psychiatry, Ruhr University, Alexandrinenstr 1, 44791 Bochum, Germany
    Neurosci Lett 465:113-7. 2009
    ..It can be suggested that significant alterations in serotonergic systems may rather be related to acute activation of the endogenous cannabinoid system or to cannabis dependence accompanied by manifest depressive symptoms...
  11. doi request reprint Modulation of interpersonal trust in borderline personality disorder by intranasal oxytocin and childhood trauma
    Andreas Ebert
    Department of Psychiatry, Psychotherapy and Preventive Medicine, Division of Cognitive Neuropsychiatry and Psychiatric Preventive Medicine, Ruhr University Bochum, LWL University Hospital, Bochum, Germany
    Soc Neurosci 8:305-13. 2013
    ....
  12. doi request reprint Nonverbal behavior during clinical interviews: similarities and dissimilarities among schizophrenia, mania, and depression
    Sigrid Annen
    Research Department of Cognitive Neuropsychiatry and Psychiatric Preventive Medicine, Department of Psychiatry, Psychotherapy and Preventive Medicine, Ruhr University of Bochum, LWL University Hospital Bochum, Alexandrinenstrasse 1, Bochum, Germany
    J Nerv Ment Dis 200:26-32. 2012
    ..Patients with schizophrenia, depression, and mania differ in nonverbal behavior. Nonverbal communication seems to be a significant contributor to clinicians' intuitive ratings...
  13. doi request reprint Inhibition of cerebral type 1 cannabinoid receptors is associated with impaired auditory mismatch negativity generation in the ketamine model of schizophrenia
    Patrik Roser
    Department of Psychiatry, LWL University Hospital, Ruhr University Bochum, Alexandrinenstr 1, 44791 Bochum, Germany
    Psychopharmacology (Berl) 218:611-20. 2011
    ..Experimental studies implicate deficient N-methyl-D: -aspartate (NMDA) receptor functioning in such abnormalities...
  14. ncbi request reprint Simultaneous and sensitive analysis of THC, 11-OH-THC, THC-COOH, CBD, and CBN by GC-MS in plasma after oral application of small doses of THC and cannabis extract
    Thomas Nadulski
    Institute of Legal Medicine, University Hospital Charite, Hannoversche Strabe 6, D 10115 Berlin, Germany
    J Anal Toxicol 29:782-9. 2005
    ..Therefore, the concentration ratio 11-OH-THC/THC was discussed as a criterion for distinguishing oral from inhalative cannabis consumption...
  15. ncbi request reprint Randomized, double-blind, placebo-controlled study about the effects of cannabidiol (CBD) on the pharmacokinetics of Delta9-tetrahydrocannabinol (THC) after oral application of THC verses standardized cannabis extract
    Thomas Nadulski
    Institute of Legal Medicine and Department of Psychiatry, University Hospital Charite, Berlin, Germany
    Ther Drug Monit 27:799-810. 2005
    ..Significantly higher AUC and Cmax and shorter tmax were found for females as compared with males...