| Budget Amount *help |
¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2010: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2009: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2008: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
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| Research Abstract |
Extracellular recordings from the brain of crayfish, Procambarus clarkii, fixed on a sphere-type treadmill have revealed for the first time in invertebrates that a specific set of descending interneurons show a noticeable increase in their spike activity, i.e., the readiness activity, before the animal spontaneously initiates locomotor behavior. Using intracellular recording and staining techniques, we could identify those readiness discharge neurons by characterizing their physiological and morphological features in the brain. Furthermore, we showed that the readiness activity is shaped by sequential synaptic excitation and inhibition.
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