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Transactions: WSEAS TRANSACTIONS ON BIOLOGY AND BIOMEDICINE
Transactions ID Number: 54-115
Full Name: Juliana Dushanova
Position: Associate Professor
Age: ON
Sex: Female
Address: Address: Institute of Neurobiology, Bulgarian Academy of Sciences, 1113 Sofia
Country: BULGARIA
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E-mail address: juliana@bio.bas.bg
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Title of the Paper: Direction information of 'view' neurons in primary motor cortex
Authors as they appear in the Paper: Juliana Dushanova and John Donoghue
Email addresses of all the authors: juliana@bio.bas.bg
Number of paper pages: 10
Abstract: We report the existence of neurons in primary motor cortex (MI) responding to viewed actions, an area generally considered to initiate and guide movement performance. Multielectrode recordings in monkeys performing or observing a well-learned step tracking task showed that approximately half of MI neurons, active when monkeys performed the task, were also active when they observed the action being performed by a human. These 'view' neurons were spatially intermingled with 'do' neurons, active only during movement performance. Simultaneously recorded, 'view' neurons population activity during viewing was sufficient to predict the direction and trajectory of viewed movements as action unfolded, although less accurately than during performance. MI 'view' neurons thus appear to reflect the aspects of a learned movement when observed in others and form part of a broadly engaged set of cortical areas routinely responding to learned behaviors. These findings suggest that !
viewing a learned action elicits replay of aspects of MI activity needed to perform the observed action and could additionally reflect processing related to understanding, learning or mentally rehearsing action.
Keywords: action observation, decoding, MI neurons, primates
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