| Project/Area Number |
24500466
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Neurophysiology and muscle physiology
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| Research Institution | Komazawa Women's University |
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Principal Investigator |
SATO Katsushige 駒沢女子大学, 公私立大学の部局等, 教授 (80291342)
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| Co-Investigator(Renkei-kenkyūsha) |
SATO Yoko (MOMOSE Yoko) 関東学院大学, 人間環境学部, 教授 (70251501)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | optical recording / voltage-sensitive dye / brainstem / functiogenesis / depolarization wave / neural circuit formation / embryo / spontaneous activity / 光学的イメージング / 膜電位感受性色素 / 脳幹 / 機能発生 / 脱分極波 / 神経回路網形成 / 自発興奮 |
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| Outline of Final Research Achievements |
Spontaneous embryonic movements, called embryonic motility, are produced by correlated spontaneous activity in the cranial and spinal nerves, which is driven by brainstem and spinal networks. Using optical imaging with a voltage-sensitive dye, we have revealed previously in the chick and rat embryos that this correlated activity is a widely propagating wave of neural depolarization, which we termed the depolarization wave. One important consideration is whether a depolarization wave with similar characteristics occurs in other species, especially in different mammals. Here, we provide evidence for the existence of the depolarization wave in the mouse embryo by summarizing spatiotemporal characteristics and pharmacological natures of the widely propagating wave activity. The findings show that a synchronized wave with common characteristics is expressed in different species, suggesting its fundamental roles in neural development.
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