A visual representation of the hand in the resting somatomotor regions of the human brain.

Autor: El Rassi Y; IMT School for Advanced Studies Lucca, 55100, Lucca, Italy., Handjaras G; IMT School for Advanced Studies Lucca, 55100, Lucca, Italy., Perciballi C; Department of Psychology, Sapienza University of Rome, 00185, Rome, Italy., Leo A; IMT School for Advanced Studies Lucca, 55100, Lucca, Italy.; Department of Translational Research and Advanced Technologies, In Medicine and Surgery - University of Pisa, 56126, Pisa, Italy., Papale P; IMT School for Advanced Studies Lucca, 55100, Lucca, Italy.; Department of Vision & Cognition, Netherlands Institute for Neuroscience (KNAW), Meibergdreef 47, 1105 BA, Amsterdam, The Netherlands., Corbetta M; Department of Neuroscience and Padova Neuroscience Center (PNC), University of Padua, 35131, Padua, Italy.; Venetian Institute of Molecular Medicine (VIMM), 35129, Padua, Italy., Ricciardi E; IMT School for Advanced Studies Lucca, 55100, Lucca, Italy., Betti V; IRCCS Fondazione Santa Lucia, 00179, Rome, Italy. viviana.betti@uniroma1.it.; Department of Psychology, Sapienza University of Rome, 00185, Rome, Italy. viviana.betti@uniroma1.it.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Aug 07; Vol. 14 (1), pp. 18298. Date of Electronic Publication: 2024 Aug 07.
DOI: 10.1038/s41598-024-69248-z
Abstrakt: Hand visibility affects motor control, perception, and attention, as visual information is integrated into an internal model of somatomotor control. Spontaneous brain activity, i.e., at rest, in the absence of an active task, is correlated among somatomotor regions that are jointly activated during motor tasks. Recent studies suggest that spontaneous activity patterns not only replay task activation patterns but also maintain a model of the body's and environment's statistical regularities (priors), which may be used to predict upcoming behavior. Here, we test whether spontaneous activity in the human somatomotor cortex as measured using fMRI is modulated by visual stimuli that display hands vs. non-hand stimuli and by the use/action they represent. A multivariate pattern analysis was performed to examine the similarity between spontaneous activity patterns and task-evoked patterns to the presentation of natural hands, robot hands, gloves, or control stimuli (food). In the left somatomotor cortex, we observed a stronger (multivoxel) spatial correlation between resting state activity and natural hand picture patterns compared to other stimuli. No task-rest similarity was found in the visual cortex. Spontaneous activity patterns in somatomotor brain regions code for the visual representation of human hands and their use.
(© 2024. The Author(s).)
Databáze: MEDLINE
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