Preparatory activity for purposeful arm movements in the dorsomedial parietal area V6A: Beyond the online guidance of movement

Abstract Over the years, electrophysiological recordings in macaque monkeys performing visuomotor tasks brought about accumulating evidence for the expression of neuronal properties (e.g., selectivity in the visuospatial and somatosensory domains, encoding of visual affordances and motor cues) in th...

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Autores principales:	Elisa Santandrea, Rossella Breveglieri, Annalisa Bosco, Claudio Galletti, Patrizia Fattori
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7be959d8d7fd46768159011692d555f8
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spelling	oai:doaj.org-article:7be959d8d7fd46768159011692d555f82021-12-02T12:32:35ZPreparatory activity for purposeful arm movements in the dorsomedial parietal area V6A: Beyond the online guidance of movement10.1038/s41598-018-25117-02045-2322https://doaj.org/article/7be959d8d7fd46768159011692d555f82018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-25117-0https://doaj.org/toc/2045-2322Abstract Over the years, electrophysiological recordings in macaque monkeys performing visuomotor tasks brought about accumulating evidence for the expression of neuronal properties (e.g., selectivity in the visuospatial and somatosensory domains, encoding of visual affordances and motor cues) in the posterior parietal area V6A that characterize it as an ideal neural substrate for online control of prehension. Interestingly, neuroimaging studies suggested a role of putative human V6A also in action preparation; moreover, pre-movement population activity in monkey V6A has been recently shown to convey grip-related information for upcoming grasping. Here we directly test whether macaque V6A neurons encode preparatory signals that effectively differentiate between dissimilar actions before movement. We recorded the activity of single V6A neurons during execution of two visuomotor tasks requiring either reach-to-press or reach-to-grasp movements in different background conditions, and described the nature and temporal dynamics of V6A activity preceding movement execution. We found striking consistency in neural discharges measured during pre-movement and movement epochs, suggesting that the former is a preparatory activity exquisitely linked to the subsequent execution of particular motor actions. These findings strongly support a role of V6A beyond the online guidance of movement, with preparatory activity implementing suitable motor programs that subsequently support action execution.Elisa SantandreaRossella BreveglieriAnnalisa BoscoClaudio GallettiPatrizia FattoriNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-16 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Elisa Santandrea Rossella Breveglieri Annalisa Bosco Claudio Galletti Patrizia Fattori Preparatory activity for purposeful arm movements in the dorsomedial parietal area V6A: Beyond the online guidance of movement
description	Abstract Over the years, electrophysiological recordings in macaque monkeys performing visuomotor tasks brought about accumulating evidence for the expression of neuronal properties (e.g., selectivity in the visuospatial and somatosensory domains, encoding of visual affordances and motor cues) in the posterior parietal area V6A that characterize it as an ideal neural substrate for online control of prehension. Interestingly, neuroimaging studies suggested a role of putative human V6A also in action preparation; moreover, pre-movement population activity in monkey V6A has been recently shown to convey grip-related information for upcoming grasping. Here we directly test whether macaque V6A neurons encode preparatory signals that effectively differentiate between dissimilar actions before movement. We recorded the activity of single V6A neurons during execution of two visuomotor tasks requiring either reach-to-press or reach-to-grasp movements in different background conditions, and described the nature and temporal dynamics of V6A activity preceding movement execution. We found striking consistency in neural discharges measured during pre-movement and movement epochs, suggesting that the former is a preparatory activity exquisitely linked to the subsequent execution of particular motor actions. These findings strongly support a role of V6A beyond the online guidance of movement, with preparatory activity implementing suitable motor programs that subsequently support action execution.
format	article
author	Elisa Santandrea Rossella Breveglieri Annalisa Bosco Claudio Galletti Patrizia Fattori
author_facet	Elisa Santandrea Rossella Breveglieri Annalisa Bosco Claudio Galletti Patrizia Fattori
author_sort	Elisa Santandrea
title	Preparatory activity for purposeful arm movements in the dorsomedial parietal area V6A: Beyond the online guidance of movement
title_short	Preparatory activity for purposeful arm movements in the dorsomedial parietal area V6A: Beyond the online guidance of movement
title_full	Preparatory activity for purposeful arm movements in the dorsomedial parietal area V6A: Beyond the online guidance of movement
title_fullStr	Preparatory activity for purposeful arm movements in the dorsomedial parietal area V6A: Beyond the online guidance of movement
title_full_unstemmed	Preparatory activity for purposeful arm movements in the dorsomedial parietal area V6A: Beyond the online guidance of movement
title_sort	preparatory activity for purposeful arm movements in the dorsomedial parietal area v6a: beyond the online guidance of movement
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/7be959d8d7fd46768159011692d555f8
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Preparatory activity for purposeful arm movements in the dorsomedial parietal area V6A: Beyond the online guidance of movement

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