AI Article Synopsis
- Movements toward a visual target can have significant errors when the limb is not visible, mainly due to issues in the visuomotor transformation process.
- When participants could see their limb, the errors in their movements appeared random, while those unable to see their limb exhibited structured, non-random error sequences.
- The discovery of 1/f-type fluctuations in error sequences during invisibility offers valuable insights for developing mathematical models in the study of human visuomotor control.
Article Abstract
In the absence of vision of the limb, movements toward a visual target exhibit substantial errors which are considered to originate mainly in the visuomotor transformation process. To determine the time-dependent property of human visuomotor transformation, we investigated the error sequences in movements toward visual target using scaling analyses. When subjects could see their controlling limb, the error sequences could not be distinguished from a random sequence. On the other hand, when the controlling limb was invisible, the error sequences were not random in order, but exhibited 1/f-type time correlation. This finding that the variation in human visuomotor transformation shows 1/f-type fluctuation provides a significant index for mathematical modeling and system identification in human visuomotor control.
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| http://dx.doi.org/10.1097/00001756-200405190-00010 | DOI Listing |
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