Low resolution brain electromagnetic tomography (LORETA) functional imaging in acute, neuroleptic-naive, first-episode, productive schizophrenia
- R. Pascual-Marqui, D. Lehmann, M. Koukkou
- Psychology, MedicinePsychiatry Research: Neuroimaging
- 30 June 1999
Ketamine-induced deficits in auditory and visual context-dependent processing in healthy volunteers: implications for models of cognitive deficits in schizophrenia.
- D. Umbricht, L. Schmid, R. Koller, F. Vollenweider, D. Hell, D. Javitt
- Psychology, MedicineArchives of General Psychiatry
- 1 December 2000
Ketamine induced performance deficits in the AX-CPT characterized by decreased hit rates and specific increases of errors (BX errors), reflecting a failure to form and use transient memory traces of task relevant information.
Psilocybin induces schizophrenia‐like psychosis in humans via a serotonin‐2 agonist action
- F. Vollenweider, M. F. Vollenweider-Scherpenhuyzen, Andreas Bäbler, H. Vogel, D. Hell
- Psychology, MedicineNeuroReport
- 1 December 1998
In healthy human volunteers, the psychotomimetic effects of psilocybin were blocked dose-dependently by the serotonin-2A antagonist ketanserin or the atypical antipsychotics risperidone, but were increased by the dopamine antagonist and typical antipsychotic haloperidol.
Schizophrenia: glutathione deficit in cerebrospinal fluid and prefrontal cortex in vivo
- K. Do, A. Trabesinger, M. Cuénod
- Psychology, MedicineEuropean Journal of Neuroscience
- 1 October 2000
In cerebrospinal fluid of drug‐free schizophrenic patients, a significant decrease in the level of total glutathione (GSH) was observed, in keeping with the reported reduced level of its metabolite γ‐glutamylglutamine.
Imbalance between Left and Right Dorsolateral Prefrontal Cortex in Major Depression Is Linked to Negative Emotional Judgment: An fMRI Study in Severe Major Depressive Disorder
- S. Grimm, J. Beck, G. Northoff
- Psychology, BiologyBiological Psychiatry
- 15 February 2008
Differential psychopathology and patterns of cerebral glucose utilisation produced by (S)- and (R)-ketamine in healthy volunteers using positron emission tomography (PET)
- F. Vollenweider, K. Leenders, I. Øye, D. Hell, J. Angst
- Psychology, MedicineEuropean Neuropsychopharmacology
- 1 February 1997
Altered Negative BOLD Responses in the Default-Mode Network during Emotion Processing in Depressed Subjects
- S. Grimm, P. Boesiger, G. Northoff
- Psychology, BiologyNeuropsychopharmacology
- 1 March 2009
It is demonstrated that default-mode network NBRs are reduced in MDD and modulate these patients' abnormally negative emotions.
A deviant EEG brain microstate in acute, neuroleptic-naive schizophrenics at rest
- T. Koenig, D. Lehmann, M. Merlo, K. Kochi, D. Hell, M. Koukkou
- PsychologyEuropean Archives of Psychiatry and Clinical…
- 1999
Brain field data can be reduced efficiently into sequences of re-occurring classes of brain microstates, not overlapping in time, and whether the aberrant schizophrenic mentation is associated with specific changes in the repertory of microstates is questioned.
Localization of MDMA‐induced brain activity in healthy volunteers using low resolution brain electromagnetic tomography (LORETA)
- E. Frei, A. Gamma, R. Pascual-Marqui, D. Lehmann, D. Hell, F. Vollenweider
- Biology, PsychologyHuman Brain Mapping
- 1 November 2001
Comparison of the MDMA‐specific EEG pattern with that of various 5‐HT, DA, and NA agonists indicates that serotonin, noradrenaline, and, to a lesser degree, dopamine, contribute to the effects of MDMA on EEG, and possibly also on mood and behavior.
Psychological and Physiological Effects of MDMA (“Ecstasy”) after Pretreatment with the 5-HT2 Antagonist Ketanserin in Healthy Humans
- M. Liechti, Matthias R Saur, A. Gamma, D. Hell, F. Vollenweider
- Psychology, BiologyNeuropsychopharmacology
- 1 October 2000
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