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Grützner C, Wibral M, Sun L, et al. Deficits in high- (>60 Hz) gamma-band oscillations during visual processing in schizophrenia. Front Hum Neurosci. 2013;7:88doi: 10.3389/fnhum.2013.00088.
Grützner, C., Wibral, M., Sun, L., Rivolta, D., Singer, W., Maurer, K., & Uhlhaas, P. J. (2013). Deficits in high- (>60 Hz) gamma-band oscillations during visual processing in schizophrenia. Frontiers in human neuroscience, 788. https://doi.org/10.3389/fnhum.2013.00088
Grützner, Christine, et al. "Deficits in high- (>60 Hz) gamma-band oscillations during visual processing in schizophrenia." Frontiers in human neuroscience vol. 7 (2013): 88. doi: https://doi.org/10.3389/fnhum.2013.00088
Grützner C, Wibral M, Sun L, Rivolta D, Singer W, Maurer K, Uhlhaas PJ. Deficits in high- (>60 Hz) gamma-band oscillations during visual processing in schizophrenia. Front Hum Neurosci. 2013 Mar 26;7:88. doi: 10.3389/fnhum.2013.00088. eCollection 2013. PMID: 23532620; PMCID: PMC3607810.
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Front Hum Neurosci. 2013 Mar 26;7:88. doi: 10.3389/fnhum.2013.00088. eCollection 2013.

Deficits in high- (>60 Hz) gamma-band oscillations during visual processing in schizophrenia.

Frontiers in human neuroscience

Christine Grützner, Michael Wibral, Limin Sun, Davide Rivolta, Wolf Singer, Konrad Maurer, Peter J Uhlhaas

Affiliations

  1. Department of Neurophysiology, Max-Planck Institute for Brain Research Frankfurt am Main, Germany.

PMID: 23532620 PMCID: PMC3607810 DOI: 10.3389/fnhum.2013.00088

Abstract

Current theories of the pathophysiology of schizophrenia have focused on abnormal temporal coordination of neural activity. Oscillations in the gamma-band range (>25 Hz) are of particular interest as they establish synchronization with great precision in local cortical networks. However, the contribution of high gamma (>60 Hz) oscillations toward the pathophysiology is less established. To address this issue, we recorded magnetoencephalographic (MEG) data from 16 medicated patients with chronic schizophrenia and 16 controls during the perception of Mooney faces. MEG data were analysed in the 25-150 Hz frequency range. Patients showed elevated reaction times and reduced detection rates during the perception of upright Mooney faces while responses to inverted stimuli were intact. Impaired processing of Mooney faces in schizophrenia patients was accompanied by a pronounced reduction in spectral power between 60-120 Hz (effect size: d = 1.26) which was correlated with disorganized symptoms (r = -0.72). Our findings demonstrate that deficits in high gamma-band oscillations as measured by MEG are a sensitive marker for aberrant cortical functioning in schizophrenia, suggesting an important aspect of the pathophysiology of the disorder.

Keywords: MEG; gamma; perceptual organization; schizophrenia; synchrony

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