Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14365/4733
Title: Multistable Perception Elicits Compensatory Alpha Activity in Older Adults
Authors: Küçük, K.M.
Wienke, A.S.
Mathes, B.
Başar Eroğlu, Canan
Keywords: aging
alpha oscillations
bottom-up processes
event-related oscillations
multistable perception
adult
aged
aging
alpha rhythm
article
controlled study
electroencephalography
female
human
human experiment
major clinical study
male
oscillation
perception
satiety
wavelet transform
young adult
Publisher: Frontiers Media S.A.
Abstract: Multistable stimuli lead to the perception of two or more alternative perceptual experiences that spontaneously reverse from one to the other. This property allows researchers to study perceptual processes that endogenously generate and integrate perceptual information. These endogenous processes appear to be slowed down around the age of 55 where participants report significantly lower perceptual reversals. This study aimed to identify neural correlates of this aging effect during multistable perception utilizing a multistable version of the stroboscopic alternative motion paradigm (SAM: endogenous task) and a control condition (exogenous task). Specifically, age-related differences in perceptual destabilization and maintenance processes were examined through alpha responses. Electroencephalography (EEG) of 12 older and 12 young adults were recorded during SAM and control tasks. Alpha band activity (8–14 Hz) was obtained by wavelet-transformation of the EEG signal and analyzed for each experimental condition. Endogenous reversals induced gradual decrease in posterior alpha activity in young adults which is a replication of previous studies’ findings. Alpha desynchronization was shifted to anterior areas and prevalent across the cortex except the occipital area for older adults. Alpha responses did not differ between the groups in the control condition. These findings point to recruitment of compensatory alpha networks for maintenance of endogenously generated percepts. Increased number of networks responsible for maintenance might have extended the neural satiation duration and led to decreased reversal rates in older adults. Copyright © 2023 Küçük, Wienke, Mathes and Başar-Eroğlu.
URI: https://doi.org/10.3389/fnagi.2023.1136124
https://hdl.handle.net/20.500.14365/4733
ISSN: 1663-4365
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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