Recent works have reported that grasping movements are controlled not only by the dorsolateral visual stream, as generally thought, but also by the dorsomedial visual stream, and in particular by the medial posterior parietal area V6A. To date, the grasping activity of V6A neurons has been studied only in darkness. Here we studied the effect of visual feedback on grasp-related discharges of V6A neurons while the monkey was preparing and executing the grasping of a handle. We found that V6A grasping activity could be excited or inhibited by visual information. The neural population was divided into Visual, Motor, and Visuomotor cells. The majority of Visual and Visuomotor neurons did not respond to passive observation of the handle, suggesting that vision of action, rather than object vision, is the most effective factor. The present findings highlight the role of the dorsomedial visual stream in integrating visual and motor signals to monitor and correct grasping.

Neural activity in the medial parietal area V6A while grasping with or without visual feedback / Breveglieri, Rossella; Bosco, Annalisa; Galletti, Claudio; Passarelli, Lauretta; Fattori, Patrizia. - In: SCIENTIFIC REPORTS. - ISSN 2045-2322. - ELETTRONICO. - 6:(2016), pp. 28893.1-28893.15. [10.1038/srep28893]

Neural activity in the medial parietal area V6A while grasping with or without visual feedback

BREVEGLIERI, ROSSELLA;BOSCO, ANNALISA;GALLETTI, CLAUDIO;PASSARELLI, LAURETTA;FATTORI, PATRIZIA
2016

Abstract

Recent works have reported that grasping movements are controlled not only by the dorsolateral visual stream, as generally thought, but also by the dorsomedial visual stream, and in particular by the medial posterior parietal area V6A. To date, the grasping activity of V6A neurons has been studied only in darkness. Here we studied the effect of visual feedback on grasp-related discharges of V6A neurons while the monkey was preparing and executing the grasping of a handle. We found that V6A grasping activity could be excited or inhibited by visual information. The neural population was divided into Visual, Motor, and Visuomotor cells. The majority of Visual and Visuomotor neurons did not respond to passive observation of the handle, suggesting that vision of action, rather than object vision, is the most effective factor. The present findings highlight the role of the dorsomedial visual stream in integrating visual and motor signals to monitor and correct grasping.
2016
Neural activity in the medial parietal area V6A while grasping with or without visual feedback / Breveglieri, Rossella; Bosco, Annalisa; Galletti, Claudio; Passarelli, Lauretta; Fattori, Patrizia. - In: SCIENTIFIC REPORTS. - ISSN 2045-2322. - ELETTRONICO. - 6:(2016), pp. 28893.1-28893.15. [10.1038/srep28893]
Breveglieri, Rossella; Bosco, Annalisa; Galletti, Claudio; Passarelli, Lauretta; Fattori, Patrizia
File in questo prodotto:
File Dimensione Formato  
Breveglieri_et_al_2016.pdf

accesso aperto

Tipo: Versione (PDF) editoriale
Licenza: Licenza per Accesso Aperto. Creative Commons Attribuzione (CCBY)
Dimensione 1.69 MB
Formato Adobe PDF
1.69 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/560481
Citazioni
  • ???jsp.display-item.citation.pmc??? 13
  • Scopus 23
  • ???jsp.display-item.citation.isi??? 23
social impact