| Presentation | 2014-03-18 Spatial and temporal characteristics in figure perception estimated by contrast sensitivity of medial-point description of shape Toshihiro KUMAGAI, Hideaki KAWABATA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In the present study, we estimated spatial and temporal characteristics of contrast sensitivity distribution measured for a single Gabor target presented within or outside of a circle figure consisted of Gabor patches. Experiment 1, 2 investigated the contrast sensitivity distribution as a function of temporal frequency of presented figure, and found that the sensitivity decreased as temporal frequency was higher. The measured contrast sensitivity depended on the edges-specific processing (Local Processing) and the figure-specific processing (Global Processing). In Experiment 3, 4, we investigate spatial aspects characterized as size of the circle figure, gap between Gabor patches composing the figure, and the distance from the edges. While the global processing was observed on the small figure, the local processing was observed on the large figure. Thus, we found that spatial and temporal characteristics of contrast sensitivity could be different when the targets were appeared at around medial axis of figure or contour of figure. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Figure-Ground Segmentation / Contrast Sensitivity / Medial-Axis Description / Global Processing / Local Processing |
| Paper # | HIP2013-90 |
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| Conference Information | |
| Committee | HIP |
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| Conference Date | 2014/3/10(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Human Information Processing (HIP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Spatial and temporal characteristics in figure perception estimated by contrast sensitivity of medial-point description of shape |
| Sub Title (in English) | |
| Keyword(1) | Figure-Ground Segmentation |
| Keyword(2) | Contrast Sensitivity |
| Keyword(3) | Medial-Axis Description |
| Keyword(4) | Global Processing |
| Keyword(5) | Local Processing |
| 1st Author's Name | Toshihiro KUMAGAI |
| 1st Author's Affiliation | Faculty of Letters, Keio University() |
| 2nd Author's Name | Hideaki KAWABATA |
| 2nd Author's Affiliation | Faculty of Letters, Keio University |
| Date | 2014-03-18 |
| Paper # | HIP2013-90 |
| Volume (vol) | vol.113 |
| Number (no) | 501 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |