2010 Fiscal Year Final Research Report
Coordinate frames of MST neurons representing visual motion and smooth pursuit eye movements
| Project/Area Number |
20500351
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Neurophysiology and muscle physiology
|
|---|
| Research Institution | Hokkaido University |
|---|
Principal Investigator |
KURKIN Sergey Hokkaido University, 大学院・医学研究科, 助教 (00344466)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
FUKUSHIMA Kikuro 北海道大学, 大学院・医学研究科, 教授 (70091486)
|
|---|
| Project Period (FY) |
2008 – 2010
|
| Keywords | 滑動性追跡眼球運動 / optic flow / MST / 座標表現 / 静的傾斜 / 耳石器 / 最適方向 / サル |
|---|
| Research Abstract |
To understand coordinate frames representing smooth-pursuit and/or visual motion signals in MST, we compared preferred directions (re monkeys'head/trunk axis) of pursuit and/or visual motion responses of MSTd neurons while upright and during static whole-body roll-tilt. In the majority (80%) of neurons tested, preferred directions of pursuit and/or visual motion responses were similar while upright and during 40°static roll-tilt. Preferred directions of the remaining 20% of neurons were shifted beyond the range expected from ocular counter-rolling. These shifts, however, were still less than half of the expected shift if MST signals are coded in the earth-centered coordinates. These results suggest that smooth-pursuit and/or visual motion signals of MST neurons are coded in the head-centered coordinate.
|
Research Products
(16 results)
