Abstract
To further understand visuomotor transformations in reaching, we compared adaptation to display rotation and altered gain in planar movements. Healthy subjects moved a cursor on a screen by moving an indicator on a horizontal digitizing tablet with their unseen hand. Adaptation to rotation was less complete and was accompanied by markedly increased directional variability. Adaptation training on a single target generalized broadly for gain change, but poorly for rotation. We propose that the difficulty in adapting to rotation arises from the substantial demands on short-term working memory imposed by the need to determine the new reference direction. Adaptation to gain change makes more modest demands on short-term memory to recalibrate the visuomotor scaling factor.
Original language | English (US) |
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Pages (from-to) | 2357-2361 |
Number of pages | 5 |
Journal | Neuroreport |
Volume | 7 |
Issue number | 14 |
DOIs | |
State | Published - 1996 |
Externally published | Yes |
Keywords
- Accuracy
- Adaptation
- Coordinate transformations
- Human
- Motor programs
- Movement errors
- Multi-joint arm movements
- Reaching
ASJC Scopus subject areas
- General Neuroscience