open access

https://hdl.handle.net/2115/56879

Two-dimensional representation of action and arm-use sequences in the presupplementary and supplementary motor areas

英語

2013-09-25

Society for Neuroscience

Journal of neuroscience

33(39)

15533-15544

The medial frontal cortex has been thought to be crucially involved in temporal structuring of behavior in monkeys and humans. We examined neuronal activity in the supplementary and presupplementary motor areas of monkeys to investigate how the nervous system deals with the coding of 16 motor sequences resulting from multiple actions involving bilateral use of the arms. We first found in both areas that this behavioral demand resulted in attribute-based representation of individual motor acts, reflecting functional (action) or anatomical (right/left arm) attributes. Actions were frequently represented according to a body-axis-centered reference frame (supination or pronation) regardless of the arm to be used. Moreover, behavioral sequences were primarily represented with respect to the action- or arm-use sequence rather than the sequence of individual movements. We propose that the two-dimensional attribute-based sequence representation provides a robust and efficient means of processing multiple behavioral sequences.

学術雑誌論文

Version of Record

Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported

0270-6474

1529-2401