Paper Abstract and Keywords |
Presentation |
2009-07-13 16:10
Neural representation of observed action in parieto-premotor cortex
-- an fMRI study with multi-voxel pattern analysis -- Kenji Ogawa (JST), Toshio Inui (JST/Kyoto Univ.) NLP2009-24 NC2009-17 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Previous research indicates that posterior parietal cortex (PPC) and ventral premotor area (PMv) has a role in understanding of other’s action. However, action selectivity that is critical for action understanding within these regions has not been elucidated. We investigated whether the parieto-premotor cortex contains information about observed actions using multi-voxel pattern analysis (MVPA) over fMRI data. Participants observed object-directed hand actions. We independently manipulated multiple dimensions of observed images: action (grasp/touch), object (cup/bottle), perspective (egocentric/allocentric), hand (right/left), and image size (large/small). Neural representation of observed actions was investigated by analyzing whether this information could be correctly decoded from multi-voxel pattern activity. Results showed that the early visual area showed significant above-chance classification accuracy in all dimensions, with particularly high accuracy in perspective, hand, and image size, which is consistent with pixel-wise dissimilarity of input images. In contrast, significant decoding accuracy was observed for action, mirror-image of hand, and object in the anterior intraparietal sulcus (aIPS), and for action and object in the PMv. Our study indicates that the parieto-premotor cortex processes observed actions in a hierarchical manner, where the aIPS represents action together with hand and object, and the PMv encodes more abstracted representations of observed action. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
fMRI / multi-voxel pattern analysis / action observation / posterior parietal cortex / premotor cortex / / / |
Reference Info. |
IEICE Tech. Rep., vol. 109, no. 125, NC2009-17, pp. 55-60, July 2009. |
Paper # |
NC2009-17 |
Date of Issue |
2009-07-06 (NLP, 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) |
Download PDF |
NLP2009-24 NC2009-17 |
Conference Information |
Committee |
NC NLP |
Conference Date |
2009-07-13 - 2009-07-14 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
NAIST |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
|
Paper Information |
Registration To |
NC |
Conference Code |
2009-07-NC-NLP |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Neural representation of observed action in parieto-premotor cortex |
Sub Title (in English) |
an fMRI study with multi-voxel pattern analysis |
Keyword(1) |
fMRI |
Keyword(2) |
multi-voxel pattern analysis |
Keyword(3) |
action observation |
Keyword(4) |
posterior parietal cortex |
Keyword(5) |
premotor cortex |
Keyword(6) |
|
Keyword(7) |
|
Keyword(8) |
|
1st Author's Name |
Kenji Ogawa |
1st Author's Affiliation |
Japan Science and Technology Agency (JST) |
2nd Author's Name |
Toshio Inui |
2nd Author's Affiliation |
Japan Science and Technology Agency/Kyoto University (JST/Kyoto Univ.) |
3rd Author's Name |
|
3rd Author's Affiliation |
() |
4th Author's Name |
|
4th Author's Affiliation |
() |
5th Author's Name |
|
5th Author's Affiliation |
() |
6th Author's Name |
|
6th Author's Affiliation |
() |
7th Author's Name |
|
7th Author's Affiliation |
() |
8th Author's Name |
|
8th Author's Affiliation |
() |
9th Author's Name |
|
9th Author's Affiliation |
() |
10th Author's Name |
|
10th Author's Affiliation |
() |
11th Author's Name |
|
11th Author's Affiliation |
() |
12th Author's Name |
|
12th Author's Affiliation |
() |
13th Author's Name |
|
13th Author's Affiliation |
() |
14th Author's Name |
|
14th Author's Affiliation |
() |
15th Author's Name |
|
15th Author's Affiliation |
() |
16th Author's Name |
|
16th Author's Affiliation |
() |
17th Author's Name |
|
17th Author's Affiliation |
() |
18th Author's Name |
|
18th Author's Affiliation |
() |
19th Author's Name |
|
19th Author's Affiliation |
() |
20th Author's Name |
|
20th Author's Affiliation |
() |
Speaker |
Author-1 |
Date Time |
2009-07-13 16:10:00 |
Presentation Time |
30 minutes |
Registration for |
NC |
Paper # |
NLP2009-24, NC2009-17 |
Volume (vol) |
vol.109 |
Number (no) |
no.124(NLP), no.125(NC) |
Page |
pp.55-60 |
#Pages |
6 |
Date of Issue |
2009-07-06 (NLP, NC) |
|