Journal

The Japanese journal of neuropsychology

[Vol.20 No.1 contents]
Japanese/English

Full Text of this Article
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ArticleTitle Dynamic Interactions Between Brain, Body, and Environment
Language J
AuthorList Toshio Inui
Affiliation Graduate School of Informatics, Kyoto University
Publication Japanese Journal of Neuropsychology: 20 (1), 32-38, 2004
Received
Accepted
Abstract We can manipulate objects in the environment in various ways. To perform these manipulations smoothly, and accurately, two inevitable problems have to be solved: (1) ill-posedness of information processing in visuomotor transformations, and (2) inherent delay in signal transmission in the nervous system. In this paper, we proposed that these two problems are solved through two brain mechanisms. One mechanism is forward and inverse transformation proposed by Kawato and Inui (1990). The other mechanism is predictive processing -of bodily behavior and of objects in the outer world. This type of processing operates optimally for matching the predicted visual and/or somatosensory information related to the behavior, or to the outer world, with information feedback to the central nervous system. The mechanism of predictive processing is also important to understand certain well-known phenomena in schizophrenia, such as the disordered functional connectivity. In addition, we have theoretically and experimentally investigated how cognitive and motor functions are realized under expert processing of forward-inverse transformations and predictions.
Keywords forward-inverse transformation, predictive processing, delay time, ill-posedness, schizophrenia

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