| Presentation | 2006-12-05 Aging effects on short-latency responses during reaching to target jump and background motion Koji KADOTA, Hiroaki GOMI, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | During target reaching, manual motor responses with short latency can be caused by two kinds of visual stimuli, one is a target shift (TS), and anther is a large-field background motion (BM). To clarify the differences in processing mechanisms between the responses, we observed hand responses to these visual stimuli with a broad age range subjects (24-79yrs.) and examined effects of perceptual motion sensitivity on behavioral characteristics of the responses. The results show that the latency of TS response was significantly greater than that of the BM response. And the contrast sensitivity was correlated with the latency of BM response, but not with the latency of TS response. Amplitudes of both responses did not significantly correlate with the motion sensitivity or age. These different correlations can be explained by a two threshold model for the visuomotor processing. Considering the experimental results, we argue the idea that the rapid responses to the background motion and the target shift are generated by different computational mechanisms. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Visuomotor control / Reaching / Target jump / Background motion / Motion perception sensitivity / Aging effect |
| Paper # | NC2006-78 |
| Date of Issue |
| Conference Information | |
| Committee | NC |
|---|---|
| Conference Date | 2006/11/28(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) | Aging effects on short-latency responses during reaching to target jump and background motion |
| Sub Title (in English) | |
| Keyword(1) | Visuomotor control |
| Keyword(2) | Reaching |
| Keyword(3) | Target jump |
| Keyword(4) | Background motion |
| Keyword(5) | Motion perception sensitivity |
| Keyword(6) | Aging effect |
| 1st Author's Name | Koji KADOTA |
| 1st Author's Affiliation | JST-ERATO Shimojo Implicit Brain Function Project() |
| 2nd Author's Name | Hiroaki GOMI |
| 2nd Author's Affiliation | JST-ERATO Shimojo Implicit Brain Function Project:NTT Communication Science Laboratories |
| Date | 2006-12-05 |
| Paper # | NC2006-78 |
| Volume (vol) | vol.106 |
| Number (no) | 407 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |