| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
To clarify neural mechanism of information encoding in the primate hippocampo-entorhinal system, neuronal activity was recorded from the entorhinal cortex and its related brain areas in monkeys while the animal performed shuttling behavior on a linear track. Of the 348 neurons recorded in the entorhinal cortex and related areas, 15 showed spatially tuned activity, but none of these neurons exhibited clear gridness. Twenty one neurons showed rhythmic firing in the slow wave band, all of which were within the delta band (< 4 Hz); none of these neurons exhibited significant slow rhythmic firing in the theta band (5-10 Hz). These results indicate that the primate entorhinal cortex and related areas do encode spatial information in a different manner than the rodent entorhinal system where clear gridness and slow wave activity in the theta band appear in the activity of neurons in this system.
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