Coordinated Action in 3-D Space.
Annual rept. 15 Jan 1992-14 Jan 1993,
MARYLAND UNIV COLLEGE PARK OFFICE OF RESEARCH ADMINISTRATION AND ADVANCEMENT
Pagination or Media Count:
This grant 1 tests alternative hypotheses about the mechanism that controls gaze-shifts when nearby objects are manipulated Two quite different mechanisms have been proposed, namely, a on-line feedback and b learned, preplanned patterns of coordinated movements, and 2 studies the speed and accuracy of visually-guided hand movements and the correlation of these performance measures with binocular gaze-errors. The latter studies seek to determine how accurate binocular fixation must be to assure rapid and accurate manual performance in nearby 3-D space. The answer to this and derivative questions is not known because, until recently, binocular gaze-errors could not be measured accurately when nearby objects were handled by a subject free to move naturally. During this past year, a unique movement monitoring instrument the Maryland RFM was used to make the first measurements that can be used to answer these questions. More than 200 Mb of eye and head movement data were recorded, and detailed analyses are underway. Arrangements have been made to disseminate the answers obtained widely at a number of international conferences during the remaining months of 1993. Manuscripts testing models of shape and size perception and reading of unspaced texts have been in preparation for submission publication soon.
- Anatomy and Physiology