Coordinate frames of MST neurons representing visual motion and smooth pursuit eye movements
| Project/Area Number |
20500351
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Neurophysiology and muscle physiology
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| Research Institution | Hokkaido University |
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Principal Investigator |
KURKIN Sergey Hokkaido University, 大学院・医学研究科, 助教 (00344466)
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| Co-Investigator(Kenkyū-buntansha) |
FUKUSHIMA Kikuro 北海道大学, 大学院・医学研究科, 教授 (70091486)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2008: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| 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 / 頭部中心座標 / MST野 / 運動視 / 重力 / 耳石 / 単一ニューロン / 日本サル |
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| 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.
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Report
(4 results)
Research Products
(53 results)
