Gruber, Oliver

[["dc.bibliographiccitation.firstpage","89"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Revista de psiquiatria clínica"],["dc.bibliographiccitation.lastpage","96"],["dc.bibliographiccitation.volume","36"],["dc.contributor.author","Schmitt, Andrea"],["dc.contributor.author","Otto, Sylvia"],["dc.contributor.author","Jatzko, Alexander"],["dc.contributor.author","Ruf, Matthias"],["dc.contributor.author","Demirakca, Traute"],["dc.contributor.author","Tost, Heike"],["dc.contributor.author","Gruber, Oliver"],["dc.contributor.author","Parlapani, Eleni"],["dc.contributor.author","Falkai, Peter"],["dc.contributor.author","Braus, Dieter F."],["dc.date.accessioned","2018-11-07T08:35:29Z"],["dc.date.available","2018-11-07T08:35:29Z"],["dc.date.issued","2009"],["dc.description.abstract","Objectives: In first-episode schizophrenia patients, functional magnetic resonance imaging (fMRI) has shown prefronto-parietal dysfunction during acoustic and visual stimulation. The aim of this study was to investigate the prefronto-parietal network in elderly schizophrenia patients using the same paradigm. Additionally, we hypothesized favourable effects on brain activation by the atypical antipsychotic clozapine compared to typical neuroleptics. Methods: We investigated 18 elderly, chronic schizophrenia patients and 21 elderly healthy controls. Nine schizophrenia patients had been medicated with clozapine and 9 had been receiving typical neuroleptics over decades. In addition to assessments with psychopathological and neuropsychological rating scales we used an acoustic and visual stimulation paradigm in a 1.5 Tesla MRI scanner to investigate BOLD-response in different brain areas. Results: Compared to healthy controls schizophrenia patients showed decreased brain activation in the prefrontal and parietal cortex as well as medial anterior cingulate gyrus compared to healthy controls. In these regions, patients medicated with clozapine showed increased BOLD-response compared to patients treated with typical neuroleptics. Discussion: Our study confirmed prefronto-parietal network disturbances in elderly schizophrenia patients thus pointing to the preservation of brain activation deficits and the influence of neurodevelopmental disturbances in chronic schizophrenia until old-age. Conclusion: The atypical antipsychotic clozapine seems to facilitate brain activation even in elderly, chronic schizophrenia patients."],["dc.identifier.doi","10.1590/S0101-60832009000300002"],["dc.identifier.fs","548703"],["dc.identifier.isi","000269276800002"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/5793"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/18078"],["dc.language.iso","es"],["dc.notes.intern","Migrated from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Univ Sao Paulo, Inst Psiquiatria"],["dc.relation.issn","0101-6083"],["dc.relation.orgunit","Universitätsmedizin Göttingen"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","610"],["dc.title","Parieto-prefrontal dysfunction during visuo-auditory information processing in elderly, chronic schizophrenic patients and medication effects"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","133"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","ARCH GEN PSYCHIATRY"],["dc.bibliographiccitation.lastpage","143"],["dc.bibliographiccitation.volume","67"],["dc.contributor.author","Pajonk, Frank-Gerald"],["dc.contributor.author","Wobrock, Thomas"],["dc.contributor.author","Gruber, Oliver"],["dc.contributor.author","Scherk, Harald"],["dc.contributor.author","Berner, Dorothea"],["dc.contributor.author","Kaizl, Inge"],["dc.contributor.author","Kierer, Astrid"],["dc.contributor.author","Müller, Stephanie"],["dc.contributor.author","Oest, Martin"],["dc.contributor.author","Meyer, Tim"],["dc.contributor.author","Backens, Martin"],["dc.contributor.author","Schneider-Axmann, Thomas"],["dc.contributor.author","Thornton, Allen E."],["dc.contributor.author","Honer, Willam G."],["dc.contributor.author","Falkai, Peter"],["dc.date.accessioned","2019-07-10T08:13:32Z"],["dc.date.available","2019-07-10T08:13:32Z"],["dc.date.issued","2010"],["dc.description.abstract","Context: Hippocampal volume is lower than expected in patients with schizophrenia; however, whether this represents a fixed deficit is uncertain. Exercise is a stimulus to hippocampal plasticity. Objective: To determine whether hippocampal volume would increase with exercise in humans and whether this effect would be related to improved aerobic fitness. Design: Randomized controlled study. Setting: Patients attending a day hospital program or an outpatient clinic. Patients or Other Participants: Male patients with chronic schizophrenia and matched healthy subjects. Interventions: Aerobic exercise training (cycling) and playing table football (control group) for a period of 3 months. Main Outcome Measures: Magnetic resonance imaging of the hippocampus. Secondary outcome measures were magnetic resonance spectroscopy, neuropsychological (Rey Auditory Verbal Learning Test, Corsi blocktapping test), and clinical (Positive and Negative Syndrome Scale) features. Results: Following exercise training, relative hippocampal volume increased significantly in patients (12%) and healthy subjects (16%), with no change in the nonexercise group of patients (−1%). Changes in hippocampal volume in the exercise group were correlated with improvements in aerobic fitness measured by change in maximum oxygen consumption (r=0.71; P=.003). In the schizophrenia exercise group (but not the controls), change in hippocampal volume was associated with a 35% increase in the N-acetylaspartate to creatine ratio in the hippocampus. Finally, improvement in test scores for short-term memory in the combined exercise and nonexercise schizophrenia group was correlated with change in hippocampal volume (r=0.51; P .05). Conclusion: These results indicate that in both healthy subjects and patients with schizophrenia hippocampal volume is plastic in response to aerobic exercise."],["dc.identifier.fs","575536"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/6145"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/61270"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.orgunit","Universitätsmedizin Göttingen"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","610"],["dc.title","Hippocampal Plasticity in Response to Exercise in Schizophrenia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","172"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Creativity Research Journal"],["dc.bibliographiccitation.lastpage","178"],["dc.bibliographiccitation.volume","30"],["dc.contributor.author","Goya-Maldonado, Roberto"],["dc.contributor.author","Keil, Maria"],["dc.contributor.author","Brodmann, Katja"],["dc.contributor.author","Gruber, Oliver"],["dc.date.accessioned","2019-11-18T13:04:52Z"],["dc.date.accessioned","2021-10-27T13:21:29Z"],["dc.date.available","2019-11-18T13:04:52Z"],["dc.date.available","2021-10-27T13:21:29Z"],["dc.date.issued","2018"],["dc.description.abstract","creativity, reward, artist, fMRI"],["dc.description.abstract","Humans possess an invaluable ability of self-expression that extends into visual, literary, musical and many other fields of creation. More than any other profession, artists are in close contact with this subdomain of creativity. Probably one of the most intriguing aspects of creativity is its negative correlation with the availability of monetary reward. With this study we aimed to investigate the reactivity of the dopaminergic reward system in artists and non-artist controls using the desire-reason-dilemma (DRD) paradigm, which allows separate evaluation of reactivity to the acceptance and rejection of rewards. Using fMRI, we measured blood-oxygen-level-dependent (BOLD) responses in key regions of the reward system, namely the ventral striatum (VS), the ventral tegmental area (VTA), and the anterior ventral prefrontal cortex (AVPFC). In contrast to controls, artists presented significantly weaker VS activation in reward acceptance. Additionally, they showed stronger suppression of the VS by the AVPFC in reward rejection. No other differences in demographic or behavioral data were evidenced. These results support the existence of characteristic neural traits in artists, who display reduced reactions to monetary reward acceptance and increased reactions to monetary reward rejection."],["dc.identifier.doi","10.1080/10400419.2018.1414994"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16683"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/92025"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.relation.haserratum","/handle/2/74688"],["dc.relation.orgunit","Universitätsmedizin Göttingen"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","610"],["dc.title","Reactivity of the reward system in artists during acceptance and rejection of monetary rewards"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","submitted_version"],["dspace.entity.type","Publication"]]