| Budget Amount *help |
¥49,500,000 (Direct Cost: ¥49,500,000)
Fiscal Year 2009: ¥9,900,000 (Direct Cost: ¥9,900,000)
Fiscal Year 2008: ¥9,900,000 (Direct Cost: ¥9,900,000)
Fiscal Year 2007: ¥9,900,000 (Direct Cost: ¥9,900,000)
Fiscal Year 2006: ¥9,900,000 (Direct Cost: ¥9,900,000)
Fiscal Year 2005: ¥9,900,000 (Direct Cost: ¥9,900,000)
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| Research Abstract |
After the lesion of the primary visual cortex, visually guided saccadic eye movements towards the targets presented in the affected visual field recovers within 1-2 months in monkeys. After the recovery, the visual signal is processed mainly by the superior colliculus (SC). Under particular circumstances, the direct visual inputs from the retina to the superficial layer of the SC can directly activate the neurons in the intermediate layer of the SC and then the further activation of the saccade generator circuits downstream in the brainstem triggers ultra-short latency saccades named express saccades.
After the lesion of the direct cortico-motoneuronal connections from the primary motor cortex to hand motoneurons, dexterous finger movements are once impaired but recover through training within 1-2 months in monkeys. Such recovery is contributed by the indirect cortico-motoneuronal pathway mediated by propriospinal neurons located a few segments rostral to motoneurons.
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