Sensory feedback-dependent coding of arm position in local field potentials of the posterior parietal cortex

Abstract Although multisensory integration is crucial for sensorimotor function, it is unclear how visual and proprioceptive sensory cues are combined in the brain during motor behaviors. Here we characterized the effects of multisensory interactions on local field potential (LFP) activity obtained...

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Autores principales:	Paul VanGilder, Ying Shi, Gregory Apker, Christopher A. Buneo
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b5f7136d3d314725946bc2660e8c0d3b
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spelling	oai:doaj.org-article:b5f7136d3d314725946bc2660e8c0d3b2021-12-02T13:41:44ZSensory feedback-dependent coding of arm position in local field potentials of the posterior parietal cortex10.1038/s41598-021-88278-52045-2322https://doaj.org/article/b5f7136d3d314725946bc2660e8c0d3b2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88278-5https://doaj.org/toc/2045-2322Abstract Although multisensory integration is crucial for sensorimotor function, it is unclear how visual and proprioceptive sensory cues are combined in the brain during motor behaviors. Here we characterized the effects of multisensory interactions on local field potential (LFP) activity obtained from the superior parietal lobule (SPL) as non-human primates performed a reaching task with either unimodal (proprioceptive) or bimodal (visual-proprioceptive) sensory feedback. Based on previous analyses of spiking activity, we hypothesized that evoked LFP responses would be tuned to arm location but would be suppressed on bimodal trials, relative to unimodal trials. We also expected to see a substantial number of recording sites with enhanced beta band spectral power for only one set of feedback conditions (e.g. unimodal or bimodal), as was previously observed for spiking activity. We found that evoked activity and beta band power were tuned to arm location at many individual sites, though this tuning often differed between unimodal and bimodal trials. Across the population, both evoked and beta activity were consistent with feedback-dependent tuning to arm location, while beta band activity also showed evidence of response suppression on bimodal trials. The results suggest that multisensory interactions can alter the tuning and gain of arm position-related LFP activity in the SPL.Paul VanGilderYing ShiGregory ApkerChristopher A. BuneoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Paul VanGilder Ying Shi Gregory Apker Christopher A. Buneo Sensory feedback-dependent coding of arm position in local field potentials of the posterior parietal cortex
description	Abstract Although multisensory integration is crucial for sensorimotor function, it is unclear how visual and proprioceptive sensory cues are combined in the brain during motor behaviors. Here we characterized the effects of multisensory interactions on local field potential (LFP) activity obtained from the superior parietal lobule (SPL) as non-human primates performed a reaching task with either unimodal (proprioceptive) or bimodal (visual-proprioceptive) sensory feedback. Based on previous analyses of spiking activity, we hypothesized that evoked LFP responses would be tuned to arm location but would be suppressed on bimodal trials, relative to unimodal trials. We also expected to see a substantial number of recording sites with enhanced beta band spectral power for only one set of feedback conditions (e.g. unimodal or bimodal), as was previously observed for spiking activity. We found that evoked activity and beta band power were tuned to arm location at many individual sites, though this tuning often differed between unimodal and bimodal trials. Across the population, both evoked and beta activity were consistent with feedback-dependent tuning to arm location, while beta band activity also showed evidence of response suppression on bimodal trials. The results suggest that multisensory interactions can alter the tuning and gain of arm position-related LFP activity in the SPL.
format	article
author	Paul VanGilder Ying Shi Gregory Apker Christopher A. Buneo
author_facet	Paul VanGilder Ying Shi Gregory Apker Christopher A. Buneo
author_sort	Paul VanGilder
title	Sensory feedback-dependent coding of arm position in local field potentials of the posterior parietal cortex
title_short	Sensory feedback-dependent coding of arm position in local field potentials of the posterior parietal cortex
title_full	Sensory feedback-dependent coding of arm position in local field potentials of the posterior parietal cortex
title_fullStr	Sensory feedback-dependent coding of arm position in local field potentials of the posterior parietal cortex
title_full_unstemmed	Sensory feedback-dependent coding of arm position in local field potentials of the posterior parietal cortex
title_sort	sensory feedback-dependent coding of arm position in local field potentials of the posterior parietal cortex
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b5f7136d3d314725946bc2660e8c0d3b
work_keys_str_mv	AT paulvangilder sensoryfeedbackdependentcodingofarmpositioninlocalfieldpotentialsoftheposteriorparietalcortex AT yingshi sensoryfeedbackdependentcodingofarmpositioninlocalfieldpotentialsoftheposteriorparietalcortex AT gregoryapker sensoryfeedbackdependentcodingofarmpositioninlocalfieldpotentialsoftheposteriorparietalcortex AT christopherabuneo sensoryfeedbackdependentcodingofarmpositioninlocalfieldpotentialsoftheposteriorparietalcortex
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Sensory feedback-dependent coding of arm position in local field potentials of the posterior parietal cortex

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