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Lanzilotto M, Livi A, Maranesi M, Gerbella M, Barz F, Ruther P, Fogassi L, Rizzolatti G, Bonini L. Extending the Cortical Grasping Network: Pre-supplementary Motor Neuron Activity During Vision and Grasping of Objects. Cereb Cortex 2016; 26:4435-4449. [PMID: 27733538 PMCID: PMC5193144 DOI: 10.1093/cercor/bhw315] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 08/25/2016] [Accepted: 09/19/2016] [Indexed: 01/06/2023] Open
Abstract
Grasping relies on a network of parieto-frontal areas lying on the dorsolateral and dorsomedial parts of the hemispheres. However, the initiation and sequencing of voluntary actions also requires the contribution of mesial premotor regions, particularly the pre-supplementary motor area F6. We recorded 233 F6 neurons from 2 monkeys with chronic linear multishank neural probes during reaching–grasping visuomotor tasks. We showed that F6 neurons play a role in the control of forelimb movements and some of them (26%) exhibit visual and/or motor specificity for the target object. Interestingly, area F6 neurons form 2 functionally distinct populations, showing either visually-triggered or movement-related bursts of activity, in contrast to the sustained visual-to-motor activity displayed by ventral premotor area F5 neurons recorded in the same animals and with the same task during previous studies. These findings suggest that F6 plays a role in object grasping and extend existing models of the cortical grasping network.
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Affiliation(s)
- Marco Lanzilotto
- Department of Neuroscience, University of Parma, 43125 Parma, Italy
| | - Alessandro Livi
- Department of Neuroscience, University of Parma, 43125 Parma, Italy
| | - Monica Maranesi
- Istituto Italiano di Tecnologia (IIT), Brain Center for Social and Motor Cognition (BCSMC), 43125 Parma, Italy
| | - Marzio Gerbella
- Department of Neuroscience, University of Parma, 43125 Parma, Italy.,Istituto Italiano di Tecnologia (IIT), Brain Center for Social and Motor Cognition (BCSMC), 43125 Parma, Italy
| | - Falk Barz
- Department of Microsystems Engineering (IMTEK), University of Freiburg, 79110 Freiburg, Germany.,BrainLinks-BrainTools Cluster of Excellence, University of Freiburg, 79110 Freiburg, Germany
| | - Patrick Ruther
- Department of Microsystems Engineering (IMTEK), University of Freiburg, 79110 Freiburg, Germany.,BrainLinks-BrainTools Cluster of Excellence, University of Freiburg, 79110 Freiburg, Germany
| | - Leonardo Fogassi
- Department of Neuroscience, University of Parma, 43125 Parma, Italy
| | - Giacomo Rizzolatti
- Istituto Italiano di Tecnologia (IIT), Brain Center for Social and Motor Cognition (BCSMC), 43125 Parma, Italy
| | - Luca Bonini
- Department of Neuroscience, University of Parma, 43125 Parma, Italy.,Istituto Italiano di Tecnologia (IIT), Brain Center for Social and Motor Cognition (BCSMC), 43125 Parma, Italy
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