Paper Abstract and Keywords |
Presentation |
2006-03-17 09:30
On-line visuomotor control mechanism from the viewpoint of coordinate transformation Naoki Saijo, Hiroaki Gomi (NTT) |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
When the visual target is suddenly shifted during a reaching movement, we can adjust our hand movement to the shifted target position with short-latency (< 150 ms). However, the computational mechanism to generate such on-line reaching adjustment is still unclear. In this study we investigated this mechanism from the viewpoint of visuomotor coordinate transformation. We observed the hand response to the target shift in one of eight radial directions. The experimental data show that the direction of the initial phase (150 - 200 ms) of hand response acceleration was slightly biased from the corresponding target shift direction, whereas the direction of the late phase (250 - 300 ms) was little biased. Additionally, when the reaching target shift was introduced by the stimulus without object motion, the response latency was significantly delayed and the directionally biased response was disappeared. These results suggest that the on-line reaching adjustment would be generated by two different mechanisms: a reflexive controller which is induced by visual motion with short-latency and generates spatially inaccurate response, and a voluntary controller which generates spatially accurate response with long-latency. We suggest that the reflexive reaching adjustment would be acted to generate the fast and accurate on-line reaching adjustment for the sudden target shift. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Motor control / Reaching / Visuomotor coordination / On-line / Reflex / / / |
Reference Info. |
IEICE Tech. Rep., vol. 105, no. 659, NC2005-151, pp. 1-6, March 2006. |
Paper # |
NC2005-151 |
Date of Issue |
2006-03-10 (NC) |
ISSN |
Print edition: ISSN 0913-5685 |
Download PDF |
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Conference Information |
Committee |
NC |
Conference Date |
2006-03-15 - 2006-03-17 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Tamagawa University |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
General |
Paper Information |
Registration To |
NC |
Conference Code |
2006-03-NC |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
On-line visuomotor control mechanism from the viewpoint of coordinate transformation |
Sub Title (in English) |
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Keyword(1) |
Motor control |
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Reaching |
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Visuomotor coordination |
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On-line |
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Reflex |
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1st Author's Name |
Naoki Saijo |
1st Author's Affiliation |
Nippon Telegraph and Telephone Corporation (NTT) |
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Hiroaki Gomi |
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Nippon Telegraph and Telephone Corporation (NTT) |
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Speaker |
Author-1 |
Date Time |
2006-03-17 09:30:00 |
Presentation Time |
25 minutes |
Registration for |
NC |
Paper # |
NC2005-151 |
Volume (vol) |
vol.105 |
Number (no) |
no.659 |
Page |
pp.1-6 |
#Pages |
6 |
Date of Issue |
2006-03-10 (NC) |
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