Increases in sensory noise predict attentional disruptions to audiovisual speech perception.

Autor:	Fisher VL; Department of Neuroscience, Oberlin College, Oberlin, OH, United States.; Yale University School of Medicine and the Connecticut Mental Health Center, New Haven, CT, United States., Dean CL; Department of Neuroscience, Oberlin College, Oberlin, OH, United States.; Roche/Genentech Neurodevelopment & Psychiatry Teams Product Development, Neuroscience, South San Francisco, CA, United States., Nave CS; Department of Neuroscience, Oberlin College, Oberlin, OH, United States., Parkins EV; Department of Neuroscience, Oberlin College, Oberlin, OH, United States.; Neuroscience Graduate Program, University of Cincinnati, Cincinnati, OH, United States., Kerkhoff WG; Department of Neuroscience, Oberlin College, Oberlin, OH, United States.; Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA, United States., Kwakye LD; Department of Neuroscience, Oberlin College, Oberlin, OH, United States.
Jazyk:	angličtina
Zdroj:	Frontiers in human neuroscience [Front Hum Neurosci] 2023 Jan 04; Vol. 16, pp. 1027335. Date of Electronic Publication: 2023 Jan 04 (Print Publication: 2022).
DOI:	10.3389/fnhum.2022.1027335
Abstrakt:	We receive information about the world around us from multiple senses which combine in a process known as multisensory integration. Multisensory integration has been shown to be dependent on attention; however, the neural mechanisms underlying this effect are poorly understood. The current study investigates whether changes in sensory noise explain the effect of attention on multisensory integration and whether attentional modulations to multisensory integration occur via modality-specific mechanisms. A task based on the McGurk Illusion was used to measure multisensory integration while attention was manipulated via a concurrent auditory or visual task. Sensory noise was measured within modality based on variability in unisensory performance and was used to predict attentional changes to McGurk perception. Consistent with previous studies, reports of the McGurk illusion decreased when accompanied with a secondary task; however, this effect was stronger for the secondary visual (as opposed to auditory) task. While auditory noise was not influenced by either secondary task, visual noise increased with the addition of the secondary visual task specifically. Interestingly, visual noise accounted for significant variability in attentional disruptions to the McGurk illusion. Overall, these results strongly suggest that sensory noise may underlie attentional alterations to multisensory integration in a modality-specific manner. Future studies are needed to determine whether this finding generalizes to other types of multisensory integration and attentional manipulations. This line of research may inform future studies of attentional alterations to sensory processing in neurological disorders, such as Schizophrenia, Autism, and ADHD. Competing Interests: CD is a current employee of F. Hoffman-La Roche Ltd. and Genentech, Inc. CD’s contributions to this study were completed while she attended Oberlin College. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. (Copyright © 2023 Fisher, Dean, Nave, Parkins, Kerkhoff and Kwakye.)
Databáze:	MEDLINE
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