Tool-use Iearning and the cerebellum. Hiroshi IMAMIZU 1 , Satoru MIYAUCHI 2 , Tomoe TAMADA 1 , Mitsuo KAWATO 1,3 1CREST. JST 2Communications Research Laboratory, Ministry of Posts & Telecommunications 3ATR Human Infomation Processing Research Laboratories Keyword: cerebellum , computational theory , internal model , functional magnetic resonance imaging , fMRI , cognitive learning pp.760-769
Published Date 2000/10/10
DOI https://doi.org/10.11477/mf.1431901187
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A tool such as chopsticks or scissors is a part of the external world when not in use. However, it can be used as almost a part of the users'own body after long-term repeated use. In this study, we investigated cerebellar activity using a functional neuroimaging when human subjects learned how to use a novel tool. Results indicated that the cerebellum acquires internal models of the tool in the same computational principle that it acquires internal models of the musculoskeletal system. Furthermore, we found that 1) cerebellar regions related to the learning are different from those related to control of limb movements, and 2) functional connectivity between these regions and the ventral premotor area increased after the learning. A series of our studies revealed computational meanings of the cerebellar activity measured by the neuroimaging, and suggested that the cerebel-lum contributes to cognitive learning in the same way that it contributes to motor learning.

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