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Activity of Pursuit-Related Neurons in Medial Superior Temporal Area (MST) during Static Roll-Tilt
| Title: | Activity of Pursuit-Related Neurons in Medial Superior Temporal Area (MST) during Static Roll-Tilt |
| Authors: | Fujiwara, Keishi Browse this author | | Akao, Teppei Browse this author | | Kurkin, Sergei Browse this author →KAKEN DB | | Fukushima, Kikuro Browse this author →KAKEN DB |
| Keywords: | coordinate | | monkey | | MST | | optic flow | | preferred direction | | resting rate | | smooth pursuit | | static roll-tilt |
| Issue Date: | Jan-2011 |
| Publisher: | Oxford University Press |
| Journal Title: | Cerebral Cortex |
| Volume: | 21 |
| Issue: | 1 |
| Start Page: | 155 |
| End Page: | 165 |
| Publisher DOI: | 10.1093/cercor/bhq072 |
| Abstract: | Recent studies have shown that rhesus macaques can perceive visual motion-direction in earth-centered coordinates as accurately as humans. We tested whether coordinate frames representing smooth-pursuit and/or visual motion signals in MST are earth-centered to better understand its role in coordinating smooth-pursuit eye movements. In 2 Japanese macaques, 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 (41/51 = 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 (n = 10) were shifted beyond the range expected from ocular counter-rolling; the maximum shift was 14° and the mean shift was 12°. These shifts, however, were still less than half of the expected shift if MST signals are coded in the earth-centered coordinates. Virtually, all tested neurons (44/46 = 96%) failed to exhibit a significant difference between resting discharge rate while upright and during static roll-tilt while fixating a stationary spot. These results suggest that smooth-pursuit and/or visual motion signals of MST neurons are not coded in the earth-centered coordinates We suggest that these signals are coded in the head-centered coordinate. |
| Rights: | This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Cerebral Cortex following peer review. The definitive publisher-authenticated version Cereb. Cortex (2011) 21 (1): 155-165 is available online at: http://cercor.oxfordjournals.org/content/21/1/155 |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/47943 |
| Appears in Collections: | 保健科学院・保健科学研究院 (Graduate School of Health Sciences / Faculty of Health Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 福島 菊郎
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