| Presentation | 2008-07-15 Possible inhibitory interaction between feature maps in visual saccade selection Yuta SENZAI, Tadashi OGAWA, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | An object differing from its surrounding objects in basic feature dimensions is salient and automatically draws our attention. In theoretical models of visual search or attention, information on stimulus features is separately computed in parallel in a set of feature-specific, retinotopically organized maps (feature maps) in the early stage of visual processing. Activities in the individual feature maps are then integrated at a later stage to produce activity representing the importance of individual stimuli at each retinal location (saliency map). To know how the brain computes visual saliency using the signals from individual feature maps, we developed a visual search task for human subjects. In this task, subjects were instructed to make saccades to a singleton target, which is different from surrounding stimuli in the color, shape, or both dimension. We used saccade latency as an indicator of visual saliency and examined how the visual saliency of the target changed by combining the shape and color dimensions. Generally, the mean saccade latency was reduced when the target-defining dimension was changed from a single-dimension (either shape or color dimension) to multi-dimensions (both shape and color dimensions). The magnitude of the reduction in saccade latency was large when the average saccade latency for the shape singleton target and that for the color singleton target were almost the same. However, it was small when the average saccade latency for the shape singleton target and that for the color singleton target were quite different. This result may be well explained by mutual inhibitory connections between feature maps. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | attention / visual search / saccade / feature dimension / feature map / saliency map |
| Paper # | NC2008-32 |
| Date of Issue |
| Conference Information | |
| Committee | NC |
|---|---|
| Conference Date | 2008/7/8(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Neurocomputing (NC) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Possible inhibitory interaction between feature maps in visual saccade selection |
| Sub Title (in English) | |
| Keyword(1) | attention |
| Keyword(2) | visual search |
| Keyword(3) | saccade |
| Keyword(4) | feature dimension |
| Keyword(5) | feature map |
| Keyword(6) | saliency map |
| 1st Author's Name | Yuta SENZAI |
| 1st Author's Affiliation | Department of Integrative Brain Science, Graduate School of Medicine, Kyoto University() |
| 2nd Author's Name | Tadashi OGAWA |
| 2nd Author's Affiliation | Department of Integrative Brain Science, Graduate School of Medicine, Kyoto University |
| Date | 2008-07-15 |
| Paper # | NC2008-32 |
| Volume (vol) | vol.108 |
| Number (no) | 130 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |