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Alpha-to-beta- and gamma-band activity reflect predictive coding in affective visual processing

Alpha-to-beta- and gamma-band activity reflect predictive coding in affective visual processing

来源:bioRxiv_logobioRxiv
英文摘要

Processing of negative affective pictures typically leads to desynchronization of alpha-to-beta frequencies (ERD) and synchronization of gamma frequencies (ERS). Given that in predictive coding higher frequencies have been associated with prediction errors, while lower frequencies have been linked to expectations, we tested the hypothesis that alpha-to-beta ERD and gamma ERS induced by aversive pictures are associated with expectations and prediction errors, respectively. We recorded EEG while volunteers were involved in a probabilistically cued affective picture task using three different negative valences to produce expectations and prediction errors. Our data show that alpha-to-beta band activity was related to the expected valence of the stimulus as predicted by a cue. The absolute mismatch of the expected and actual valence, which denotes an absolute prediction error was related to gamma band activity. This demonstrates that top-down predictions and bottom-up prediction errors are represented in specific spectral patterns associated with affective picture processing.

Fazeli Sepideh、B¨1chel Christian、Strube Andreas、Rose Michael

Department of Systems Neuroscience, University Medical Center Hamburg-EppendorfDepartment of Systems Neuroscience, University Medical Center Hamburg-EppendorfDepartment of Systems Neuroscience, University Medical Center Hamburg-EppendorfDepartment of Systems Neuroscience, University Medical Center Hamburg-Eppendorf

10.1101/2021.06.03.446893

生理学神经病学、精神病学生物物理学

Predictive CodingPrediction ErrorExpectationEmotionArousal

Fazeli Sepideh,B¨1chel Christian,Strube Andreas,Rose Michael.Alpha-to-beta- and gamma-band activity reflect predictive coding in affective visual processing[EB/OL].(2025-03-28)[2025-05-05].https://www.biorxiv.org/content/10.1101/2021.06.03.446893.点此复制

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