Temporal Relationship between Action and Visual Outcome Modulates Brain Activation : An fMRI Study

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概要

• 論文の詳細を見る

• Monitoring the visual outcome of our actions is critical to our visuo-motor behavior. To investigate the neural basis of monitoring visual change produced by self-movement, we examined the temporal relationship between manual depression of a button and visual feedback on activation of the brain. Six neurologically normal subjects participated in 3 experiments (synchronous, delayed, and visual [control]). Magnetic resonance (MR) images of their brains were acquired during the experiments using a scanner operating at 3T. In the synchronous experiment, subjects pressed a button at self-paced intervals and received synchronous visual stimuli in response. In the delayed experiment, visual stimuli were presented with a delay after subjects pressed a button at self-paced intervals. In the control experiment (visual experiment), subjects did not press the button, but viewed visual stimuli generated by a computer at random intervals. In the synchronous experiment, activation in the cerebellum and right parietal lobe was stronger than in the delayed experiment, whereas activation in the primary visual cortex was weaker than in the delayed and visual experiments. These results suggest that visual outcomes produced synchronously with action are processed in the cerebellum and the parietal area for the organization of optimal motor behavior, rather than in the primary visual area that is known to process the visual properties of external objects. The cerebellar signal related to visuo-motor contingency may modulate the cortical processing of visual input that is synchronous with action.

• 2005-11-15

著者

• KATO Chikako

  Institute of Biomedical Research and Innovation

• NAKAI Toshiharu

  Functional Brain Imaging Laboratory, Department of Gerontechnology, National Center for Geriatrics a

• MATSUZAWA Masako

  Department of Psychology, Showa Women's University

• MATSUO Kayako

  Functional Brain Imaging Laboratory, Department of Gerontechnology, National Center for Geriatrics a

• SUGIO Takeshi

  Department of Intelligence Science and Technology, Graduate School of Informatics, Kyoto University

• KATO Chikako

  Functional Brain Imaging Laboratory, Department of Gerontechnology, National Center for Geriatrics a

• Nakai Toshiharu

  Medical Vision Laboratory Life Electronics Research Center Aist

• Nakai Toshiharu

  Functional Brain Imaging Lab National Center For Geriatrics And Gerontology

• Matsuo Kayako

  Medical Vision Laboratory Life Electronics Research Center Aist

• Sugio Takeshi

  Department Of Intelligence Science And Technology Graduate School Of Informatics Kyoto University

• Matsuzawa Masako

  Department Of Psychology Showa Women's University

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