Frequency-specific neural signatures of perceptual content and perceptual stability.

Autor:	Hardstone R; Neuroscience Institute, New York University Grossman School of Medicine, New York, United States., Flounders MW; Neuroscience Institute, New York University Grossman School of Medicine, New York, United States., Zhu M; Neuroscience Institute, New York University Grossman School of Medicine, New York, United States., He BJ; Neuroscience Institute, New York University Grossman School of Medicine, New York, United States.; Department of Neurology, New York University Grossman School of Medicine, New York, United States.; Department of Neuroscience and Physiology, New York University Grossman School of Medicine, New York, United States.; Department of Radiology, New York University Grossman School of Medicine, New York, United States.
Jazyk:	angličtina
Zdroj:	ELife [Elife] 2022 Sep 20; Vol. 11. Date of Electronic Publication: 2022 Sep 20.
DOI:	10.7554/eLife.78108
Abstrakt:	In the natural environment, we often form stable perceptual experiences from ambiguous and fleeting sensory inputs. Which neural activity underlies the content of perception and which neural activity supports perceptual stability remains an open question. We used a bistable perception paradigm involving ambiguous images to behaviorally dissociate perceptual content from perceptual stability, and magnetoencephalography to measure whole-brain neural dynamics in humans. Combining multivariate decoding and neural state-space analyses, we found frequency-band-specific neural signatures that underlie the content of perception and promote perceptual stability, respectively. Across different types of images, non-oscillatory neural activity in the slow cortical potential (<5 Hz) range supported the content of perception. Perceptual stability was additionally influenced by the amplitude of alpha and beta oscillations. In addition, neural activity underlying perceptual memory, which supports perceptual stability when sensory input is temporally removed from view, also encodes elapsed time. Together, these results reveal distinct neural mechanisms that support the content versus stability of visual perception. Competing Interests: RH, MF, MZ, BH No competing interests declared (© 2022, Hardstone et al.)
Databáze:	MEDLINE
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