2015 Fiscal Year Final Research Report
Spatiotemporal patterns in inferior temporal cortex during visual object recognition probing by wide area brain stimulation
| Project/Area Number |
25350997
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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 |
Brain biometrics
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| Research Institution | Niigata University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | brain stimulation / inferior temporal cortex / visual recognition |
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| Outline of Final Research Achievements |
The inferior temporal cortex (IT) of the monkey plays an essential role in visual object recognition. Neurons in IT encodes visual features for object identification such as shape, color and surface properties. It is still unclear how wide areal activity patterns of the IT contribute the recognition process. In this study we aimed 1) to identify the wide areal activity patterns underlying visual recognition 2) to identify the effect of the perturbation on spatiotemporal activity patterns of IT. We revealed that recognition memory representation emerged as shared spatial patterns of theta activity spanning the IT. We also reveal that the spatiotemporal activity patterns of the IT engaged information flow. The fast oscillation of feedforward and feedback flow was observed. The flow dynamics may reflects hierarchal neuronal information processing. We developed a multichannel simultaneous recording and stimulation system for wide area brain stimulation.
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| Free Research Field |
neuroscience
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