Functions of ascending, descending and recurrent inputs to the lateral geniculate nucleus of thalamus
| Project/Area Number |
21500369
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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 | Osaka University |
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Principal Investigator |
SATO Hiromichi 大阪大学, 大学院・医学系研究科, 教授 (50154092)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 視覚 / 外側膝状体 / 網膜神経節細胞 / 一次視覚野 / 受容野特性 / 受容野周囲抑制 / 逆相関法 / 方位選択性 / フィードフォワード入力 / GABA抑制 |
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| Research Abstract |
To clarify the mechanisms underlying the receptive field(RF) properties of the lateral geniculte nucleus(LGN), we examined the RF properties of retinal ganglion cells(RGCs), neurons in the LGN and visual cortex, and functional interactions among them in the anesthetized and paralyzed cats. The classical receptive field(CRF) of RGC and LGN neurons are elliptical in shape with suppressive extra-classical RE surround(ECRF), which produce tuning properties to the stimulus orientation and spatial frequency. These results suggest that, in the early visual system, the feedforward mechanism makes the basic tuning properties, and the feedback mechanisms enhance the tuning properties via non-linear operation of ECRF
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Report
(4 results)
Research Products
(66 results)
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[Presentation] Properties and mechanisms of orientation tuning of the cat lateral geniculate nucleus2011
Author(s)
Sato, H., Naito, T., Osaki, H., Suematsu, N., Sadakane, O., Okamoto, M. and Shimegi, S
Organizer
IBRO International Congress of Neuroscience
Place of Presentation
Florence, Italy
Year and Date
2011-07-17
Related Report
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[Presentation] Response gain control by acethylcholine of the macaque monkey primary visual cortex2010
Author(s)
Soma, S., Shimegi, S., Osaki, H., Kimura, A, Naito, T., Hara, S.-I. and Sato, H
Organizer
Society for Neuroscience 2010
Place of Presentation
San Diego
Year and Date
2010-11-16
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