Reduced delta power and synchrony and increased gamma power during the P3 time window in schizophrenia
Donkers,F.C.L. Englander,Z.A. Tiesinga,P.H.E. Cleary,K.M. Gu,H. Belger,A.
Donkers,F.C.L.
Englander,Z.A.
Tiesinga,P.H.E.
Cleary,K.M.
Gu,H.
Belger,A.
Abstract
Background Event-related potential studies in schizophrenia have demonstrated amplitude reduction of the P3 in oddball tasks. The P3 has been linked to attention and memory brain functions. Methods In 24 schizophrenia patients and 28 control subjects, wavelet transform was used to reveal event-related modulations of the EEG signal during target trials in delta, theta, alpha, beta, and gamma frequency bands. Results Patients showed reductions in P3 amplitude accompanied by reduced low frequency delta–theta and increased beta–gamma band EEG activity. Conclusions These results indicate abnormalities in the synchronization and/or efficiency of neural processes involved in memory and attention networks in schizophrenia. Keywords: Schizophrenia, Wavelet analysis, Time–frequency analysis, Delta frequency band Theta frequency band Gamma frequency band P3
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2013
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Donkers, F C L, Englander, Z A, Tiesinga, P H E, Cleary, K M, Gu, H & Belger, A 2013, 'Reduced delta power and synchrony and increased gamma power during the P3 time window in schizophrenia', Schizophrenia Research, vol. 150, no. 1, pp. 266-268. https://doi.org/10.1016/j.schres.2013.07.050