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Dynamics of alpha oscillations elucidate facial affect recognition in schizophrenia

Dynamics of alpha oscillations elucidate facial affect recognition in schizophrenia

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Prüfsumme: MD5:62a21dae910fc62ebe9aac9c79016003

POPOV, Tzvetan G., Brigitte S. ROCKSTROH, Petia POPOVA, Almut M. CAROLUS, Gregory A. MILLER, 2014. Dynamics of alpha oscillations elucidate facial affect recognition in schizophrenia. In: Cognitive, Affective, & Behavioral Neuroscience. 14(1), pp. 364-377. ISSN 1530-7026. eISSN 1531-135X. Available under: doi: 10.3758/s13415-013-0194-2

@article{Popov2014-03Dynam-25791, title={Dynamics of alpha oscillations elucidate facial affect recognition in schizophrenia}, year={2014}, doi={10.3758/s13415-013-0194-2}, number={1}, volume={14}, issn={1530-7026}, journal={Cognitive, Affective, & Behavioral Neuroscience}, pages={364--377}, author={Popov, Tzvetan G. and Rockstroh, Brigitte S. and Popova, Petia and Carolus, Almut M. and Miller, Gregory A.} }

Miller, Gregory A. Dynamics of alpha oscillations elucidate facial affect recognition in schizophrenia Popov, Tzvetan G. deposit-license Popova, Petia 2014-01-20T08:46:32Z Popov, Tzvetan G. Impaired facial affect recognition is characteristic of schizophrenia and has been related to impaired social function, but the relevant neural mechanisms have not been fully identified. The present study sought to identify the role of oscillatory alpha activity in that deficit during the process of facial emotion recognition. Neuromagnetic brain activity was monitored while 44 schizophrenia patients and 44 healthy controls viewed 5-s videos showing human faces gradually changing from neutral to fearful or happy expressions or from the neutral face of one poser to the neutral face of another. Recognition performance was determined separately by self-report. Relative to prestimulus baseline, controls exhibited a 10- to 15-Hz power increase prior to full recognition and a 10- to 15-Hz power decrease during the postrecognition phase. These results support recent proposals about the function of alpha-band oscillations in normal stimulus evaluation. The patients failed to show this sequence of alpha power increase and decrease and also showed low 10- to 15-Hz power and high 10- to 15-Hz connectivity during the prestimulus baseline. In light of the proposal that a combination of alpha power increase and functional disconnection facilitates information intake and processing, the finding of an abnormal association of low baseline alpha power and high connectivity in schizophrenia suggests a state of impaired readiness that fosters abnormal dynamics during facial affect recognition. 2014-03 2014-01-20T08:46:32Z Carolus, Almut M. Popova, Petia eng Rockstroh, Brigitte S. Cognitive, Affective, & Behavioral Neuroscience ; 14 (2014), 1. - S. 364-377 Rockstroh, Brigitte S. Carolus, Almut M. Miller, Gregory A.

Dateiabrufe seit 01.10.2014 (Informationen über die Zugriffsstatistik)

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