Paper Abstract and Keywords |
Presentation |
2010-11-18 15:20
[Invited Talk]
Cortical mechanism underlying self-initiation of voluntary movements
-- A New Behavioral and Electrophysiological Approach -- Yoshikazu Isomura (Tamagawa Univ.) MBE2010-43 NC2010-56 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Neurons in the motor cortex are activated at a variety of timing during self-initiated voluntary movement. However, how excitatory and inhibitory neurons participate in organizing the voluntary movement has been poorly understood. We performed juxtacellular recording and multi-neuron recording from the motor cortex of actively behaving rats to demonstrate different functional activations of excitatory pyramidal cells and inhibitory fast-spiking (FS) interneurons. Across cortical layers, pyramidal cells were activated diversely for sequential motor phases (e.g., preparation, initiation, execution), whereas FS interneurons were recruited predominantly for motor execution. Thus, FS interneurons may underlie command shaping, rather than command gating. Furthermore, our cross-correlation analysis of multi-neuron activity suggested that some of pyramidal cells discharged synchronously with similar and different functional classes of neurons through direct (or indirect) synaptic connections. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Operant Motor Task / Rat Motor Cortex / Multi-Neuron Recording / Juxtacellular Recording / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 110, no. 295, NC2010-56, pp. 23-25, Nov. 2010. |
Paper # |
NC2010-56 |
Date of Issue |
2010-11-11 (MBE, NC) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
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MBE2010-43 NC2010-56 |
Conference Information |
Committee |
MBE NC |
Conference Date |
2010-11-18 - 2010-11-19 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Tohoku University |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
BCI/BMI, NC and MBE |
Paper Information |
Registration To |
NC |
Conference Code |
2010-11-MBE-NC |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Cortical mechanism underlying self-initiation of voluntary movements |
Sub Title (in English) |
A New Behavioral and Electrophysiological Approach |
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Operant Motor Task |
Keyword(2) |
Rat Motor Cortex |
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Multi-Neuron Recording |
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Juxtacellular Recording |
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1st Author's Name |
Yoshikazu Isomura |
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Tamagawa University (Tamagawa Univ.) |
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Speaker |
Author-1 |
Date Time |
2010-11-18 15:20:00 |
Presentation Time |
60 minutes |
Registration for |
NC |
Paper # |
MBE2010-43, NC2010-56 |
Volume (vol) |
vol.110 |
Number (no) |
no.294(MBE), no.295(NC) |
Page |
pp.43-45(MBE), pp.23-25(NC) |
#Pages |
3 |
Date of Issue |
2010-11-11 (MBE, NC) |
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