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| Presentation | 2021-03-03 09:50 Neuronal correlation between the responses to surface and shape in monkey V4 Itsuki Machida, Atsushi Kodama, Ko Sakai (Univ. of Tsukuba)  NC2020-42 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Integration of multiple properties of an object is a fundamental function of the visual cortex in object recognition. Surface pattern and contour shape are thought to be crucial characteristics that contribute jointly to the recognition. We investigated the integration of surface and shape as well as their corresponding cortical representation in the intermediate-level visual area, V4, of monkeys. To examine whether V4 neurons are responsive to both surface and shape, we examined whether single V4 neurons were responsive to both natural image patches and their silhouette, wherein the former included both contour shape and surface properties, such as texture, color, and specularity, but the latter included only contour shape. Specifically, we analyzed the correlation between the spike counts responding to 105 natural image patches and their silhouette patches. The correlation coefficient across 46 neurons was 0.56 (p<0.001), suggesting the partial joint-coding of surface and shape in single V4 neurons. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | V4 / Vision / Object recognition / Figure-ground segregation / Electrophysiology experiment / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 120, no. 403, NC2020-42, pp. 7-10, March 2021. | |
| Paper # | NC2020-42 | |
| Date of Issue | 2021-02-24 (NC) | |
| ISSN | 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 | NC2020-42 |
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| Conference Information | |
| Committee | NC MBE |
| Conference Date | 2021-03-03 - 2021-03-05 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Neuro Computing, Medical Engineering, etc. |
| Paper Information | |
| Registration To | NC |
| Conference Code | 2021-03-NC-MBE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Neuronal correlation between the responses to surface and shape in monkey V4 |
| Sub Title (in English) | |
| Keyword(1) | V4 |
| Keyword(2) | Vision |
| Keyword(3) | Object recognition |
| Keyword(4) | Figure-ground segregation |
| Keyword(5) | Electrophysiology experiment |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Itsuki Machida |
| 1st Author's Affiliation | University of Tsukuba (Univ. of Tsukuba) |
| 2nd Author's Name | Atsushi Kodama |
| 2nd Author's Affiliation | University of Tsukuba (Univ. of Tsukuba) |
| 3rd Author's Name | Ko Sakai |
| 3rd Author's Affiliation | University of Tsukuba (Univ. of Tsukuba) |
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| Speaker | Author-1 |
| Date Time | 2021-03-03 09:50:00 |
| Presentation Time | 25 minutes |
| Registration for | NC |
| Paper # | NC2020-42 |
| Volume (vol) | vol.120 |
| Number (no) | no.403 |
| Page | pp.7-10 |
| #Pages | 4 |
| Date of Issue | 2021-02-24 (NC) |
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