Social anhedonia and gamma band abnormalities as a composite/multivariate endophenotype for schizophrenia: a dense array EEG study

  title={Social anhedonia and gamma band abnormalities as a composite/multivariate endophenotype for schizophrenia: a dense array EEG study},
  author={Shreekantiah Umesh and Shamsul Haque Nizamie and Nishant Goyal and Sai Krishna Tikka and Swarnali Bose},
  journal={Early Intervention in Psychiatry},
Social anhedonia and gamma band oscillations are proposed as a promising endophenotype for schizophrenia (SZ). The aim was to assess whether social anhedonia and spontaneous gamma band oscillations could be used as multivariate/composite endophenotypic measures for SZ. 
Disorganization and cognitive impairment in schizophrenia: New insights from electrophysiological findings.
  • A. Vignapiano, T. Koenig, M. Maj
  • Psychology, Medicine
    International journal of psychophysiology : official journal of the International Organization of Psychophysiology
  • 2019
Resting frontal EEG asymmetry and schizotypal traits: a test-retest study
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The historical roots of the social anhedonia (SoA) construct are traced to current conceptualizations and an integrative model for social reward processing is offered, which considers roles for the following: attention; social cognition; and motivation and effort.
Validation of the Korean Version of the Anticipatory and Consummatory Interpersonal Pleasure Scale in Non-help-seeking Individuals
The Anticipatory and Consummatory Interpersonal Pleasure Scale (ACIPS) is a psychometric instrument that has been used to indirectly measure social anhedonia in many cross-cultural contexts, such as


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Evaluation of resting state gamma power as a response marker in schizophrenia
An abnormal activity in the electroencephalography (EEG) gamma band (>30 Hz) has been demonstrated in schizophrenia and this has been suggested to be reflecting a deficit in the development and
Increased Resting-State Gamma-Band Connectivity in First-Episode Schizophrenia.
The present study provides a link between resting-state gamma-band connectivity and the core symptoms of schizophrenia, and indicates increased connectivity in patients within a strongly lateralized network consisting mainly of left inferior frontal/orbitofrontal, lateral and medial temporal, and inferior parietal areas.
Neurophysiological endophenotypes of schizophrenia: the viability of selected candidate measures.
A systematic evaluation of the endophenotype candidacy of several neurophysiological measures of information processing in schizophrenia, including measures of inhibitory failure, reliability, stability and heritability, and any reported gene associations.
Anhedonia in schizophrenia: a distinct familial subtype?
Associations of Anhedonia and Cognition in Persons With Schizophrenia Spectrum Disorders, Their Siblings, and Controls
In conclusion, social and physical anhedonia did not seem to mediate neuropsychological deficits of schizophrenia family members.