Neural Microstates Govern Perception of Auditory Input without Rhythmic Structure

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
Molly J HenryJonas Obleser

Abstract

Human perception fluctuates with the phase of neural oscillations in the presence of environmental rhythmic structure by which neural oscillations become entrained. However, in the absence of predictability afforded by rhythmic structure, we hypothesize that the neural dynamical states associated with optimal psychophysical performance are more complex than what has been described previously for rhythmic stimuli. The current electroencephalography study characterized the brain dynamics associated with optimal detection of gaps embedded in narrow-band acoustic noise stimuli lacking low-frequency rhythmic structure. Optimal gap detection was associated with three spectrotemporally distinct delta-governed neural microstates. Individual microstates were characterized by unique instantaneous combinations of neural phase in the delta, theta, and alpha frequency bands. Critically, gap detection was not predictable from local fluctuations in stimulus acoustics. The current results suggest that, in the absence of rhythmic structure to entrain neural oscillations, good performance hinges on complex neural states that vary from moment to moment. Significance statement: Our ability to hear faint sounds fluctuates together with slow brain a...Continue Reading

Citations

Apr 14, 2016·Proceedings of the National Academy of Sciences of the United States of America·Stephanie J KayserChristoph Kayser
Apr 23, 2020·Journal of Cognitive Neuroscience·Anna WilschSaskia Haegens
Aug 10, 2019·Frontiers in Human Neuroscience·Christoph Kayser
Jan 29, 2021·Scientific Reports·Cora Kubetschek, Christoph Kayser
May 28, 2019·NeuroImage·Natalie E HansenMatthew G Wisniewski
Jan 1, 2020·Language, Cognition and Neuroscience·Saskia Haegens
Mar 30, 2021·Topics in Cognitive Science·Meredith BrownLaura Dilley

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