| Paper Abstract and Keywords |
| Presentation |
2014-09-26 13:30
[Invited Talk]
Functional and neural mechanism of the spontaneous eyeblink Tamami Nakano (Osaka Univ.) HIP2014-56 |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
People spontaneously generate an eyeblink every few seconds. It is generally accepted that eyeblinks are necessary for ocular lubrication, but spontaneous eyeblinks actually occur several times more frequently than necessary for lubrication. Thus, the functional role of most spontaneous eyeblinks has remained unclear. We found that peoples blinked in synchrony while viewing the same video stories. This blink synchronization specifically occur at the implicit breakpoints of the video stories. Moreover, in face-to-face communication, the listeners blinked with a delay of 0.25–0.5 s after the speaker blinked at the end and during pauses in speech. In contrast, the individuals with autism spectrum disorders, which are characterized by impaired social communication, did not show any eyeblink synchronization with the speaker. These facts demonstrate that spontaneous eyeblink involves in the contextual segmentation of information, and the eyeblinks has a social function to share the contextual segmentation with others.
Furthermore, the neuroimaging study revealed that, while viewing videos, cortical activity momentarily decreases in the dorsal attention network after blink onset but increases in the default-mode network. We also found that the individual differences in the spontaneous blink rate has a significant association with the nicotinic receptor genetic polymorphism. These results suggest that the spontaneous eyeblink involves in disengagement of attention at the implicit contextual breakpoint by controlling the balance between the two competing networks with cholinergic-dopaminergic system. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
eyeblink / spontaneous / synchronization / DMN / attention / / / |
| Reference Info. |
IEICE Tech. Rep., vol. 114, no. 226, HIP2014-56, pp. 73-73, Sept. 2014. |
| Paper # |
HIP2014-56 |
| Date of Issue |
2014-09-18 (HIP) |
| 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 |
HIP2014-56 |
| Conference Information |
| Committee |
HIP |
| Conference Date |
2014-09-25 - 2014-09-26 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Nara Prefectural New Public Hall |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
HIP |
| Conference Code |
2014-09-HIP |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Functional and neural mechanism of the spontaneous eyeblink |
| Sub Title (in English) |
|
| Keyword(1) |
eyeblink |
| Keyword(2) |
spontaneous |
| Keyword(3) |
synchronization |
| Keyword(4) |
DMN |
| Keyword(5) |
attention |
| Keyword(6) |
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| Keyword(7) |
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| 1st Author's Name |
Tamami Nakano |
| 1st Author's Affiliation |
Osaka University (Osaka Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2014-09-26 13:30:00 |
| Presentation Time |
55 minutes |
| Registration for |
HIP |
| Paper # |
HIP2014-56 |
| Volume (vol) |
vol.114 |
| Number (no) |
no.226 |
| Page |
p.73 |
| #Pages |
1 |
| Date of Issue |
2014-09-18 (HIP) |