A MEG Study of Visual Repetition Priming in Schizophrenia
Evidence for Impaired High-Frequency Oscillations and Event-Related Fields in Thalamo-Occipital Cortices
Bibliographic Data
| ID | 15519526 |
|---|---|
| Authors | Andreas Sauer (0000-0003-0542-4745, Ernst Strüngmann Institute for Neuroscience), Tineke Grent-‘t-Jong (0000-0003-3177-5346, University of Glasgow), Michael Wibral (0000-0001-8010-5862, University of Göttingen), Michael Grube (0000-0003-1293-097X), Wolf Singer (0000-0002-8299-2319, Ernst Strüngmann Institute for Neuroscience), Peter J Uhlhaas (0000-0002-0892-2224, Charité - Universitätsmedizin Berlin, corresponding author) |
| Year | 2020 |
| Volume | 11 |
| Pages | 561973-561973 |
| Publication date | 2020-11-23 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Frontiers in Psychiatry (JOURNAL) |
| Journal identifiers | ISSN: 1664-0640 • E-ISSN: 1664-0640 |
| Publisher | Frontiers Media (PUBLISHER • CH) |
| DOI | 10.3389/fpsyt.2020.561973 |
| PMID | 33329101 |
| OpenAlex | W3108084819 |
| Language | EN |
| References cited | 11 |
Background: Cognitive dysfunctions represent a core feature of schizophrenia and a predictor for clinical outcomes. One possible mechanism for cognitive impairments could involve an impairment in the experience-dependent modifications of cortical networks. Methods: To address this issue, we employed magnetoencephalography (MEG) during a visual priming paradigm in a sample of chronic patients with schizophrenia ( n = 14), and in a group of healthy controls ( n = 14). We obtained MEG-recordings during the presentation of visual stimuli that were presented three times either consecutively or with intervening stimuli. MEG-data were analyzed for event-related fields as well as spectral power in the 1-200 Hz range to examine repetition suppression and repetition enhancement. We defined regions of interest in occipital and thalamic regions and obtained virtual-channel data. Results: Behavioral priming did not differ between groups. However, patients with schizophrenia showed prominently reduced oscillatory response to novel stimuli in the gamma-frequency band as well as significantly reduced repetition suppression of gamma-band activity and reduced repetition enhancement of beta-band power in occipital cortex to both consecutive repetitions as well as repetitions with intervening stimuli. Moreover, schizophrenia patients were characterized by a significant deficit in suppression of the C1m component in occipital cortex and thalamus as well as of the late positive component (LPC) in occipital cortex. Conclusions: These data provide novel evidence for impaired repetition suppression in cortical and subcortical circuits in schizophrenia. Although behavioral priming was preserved, patients with schizophrenia showed deficits in repetition suppression as well as repetition enhancement in thalamic and occipital regions, suggesting that experience-dependent modification of neural circuits is impaired in the disorder
Audiology · Cognition · Cortex (anatomy · Electroencephalography · Lexical decision task · Magnetoencephalography · Psychiatry · Repetition (rhetorical device · Repetition priming · Schizophrenia (object-oriented programming · Visual cortex · Functional Brain Connectivity Studies · Medicine · Neural dynamics and brain function · Neuroscience · Neuroscience and Music Perception · Psychology
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| Citation velocity | historical |
|---|---|
| Highly cited | No |