Research Topics
Species | Patrik RoserSummaryAffiliation: Ruhr-University Bochum Publications
| Collaborators
|
Detail Information
Publications
Effects of acute oral Delta9-tetrahydrocannabinol and standardized cannabis extract on the auditory P300 event-related potential in healthy volunteersPatrik 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...- Auditory mismatch negativity deficits in long-term heavy cannabis usersPatrik 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... 
Acute effects of Delta9-tetrahydrocannabinol and standardized cannabis extract on the auditory evoked mismatch negativityGeorg 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...- Psychomotor performance in relation to acute oral administration of Delta9-tetrahydrocannabinol and standardized cannabis extract in healthy human subjectsPatrik 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... - Alterations of theory of mind network activation in chronic cannabis usersPatrik 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... - No association between chronic cannabis use and loudness dependence of auditory evoked potentials as indicator of central serotonergic neurotransmissionPatrik 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... - Impaired facial emotion recognition in a ketamine model of psychosisAndreas 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... - Neurophysiological effects of cannabinoids: implications for psychosis researchJurgen Gallinat
Department of Psychiatry, Charite University Medicine Berlin, Campus Charite Mitte, Berlin, Germany
Curr Pharm Des 18:4938-49. 2012.... - Nonverbal behavior during clinical interviews: similarities and dissimilarities among schizophrenia, mania, and depressionSigrid 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... - Inhibition of cerebral type 1 cannabinoid receptors is associated with impaired auditory mismatch negativity generation in the ketamine model of schizophreniaPatrik 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... - Antipsychotic-like effects of cannabidiol and rimonabant: systematic review of animal and human studiesPatrik 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... - 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 extractThomas 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... - 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 extractThomas Nadulski
Institute of Legal Medicine and Department of Psychiatry, University Hospital Charit, 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...