The role of peripheral and central visual information for the directional control of manual aiming movements.

摘要: Abstract Seeing one's hand in visual periphery has been shown to optimize the directional accuracy of a sweeping movement, which is consistent with Paillard's (1980; Paillard & Amblard, 1985) two-channels model information processing. However, contrary this model, seeing central vision, even for brief period time, also resulted optimal accuracy. One goal present study was test two opposing hypotheses proposed explain latter finding. As second goal, we wanted determine whether additional support could be found existence kinetic channel. The results indicated that very short delay, same as being permitted see duration whole movement. This suggests around target might enable one code its location and within single frame reference and, thus, facilitate movement planning. In addition, motion while better than when not available. vector, planned prior initiation, can quickly updated following initiation. It generally agreed high level observed human only depends on efficiency planning mechanisms but on-line" correction (Abbs, Gracco, Cole, 1984; Bullock Grossberg, 1988; Meyer, Abrams, Kornblum, Wright, Schmidt, 1975). interaction between on-line detection errors underlines important role played by afferent control. When an individual's touch or grasp nearby object, vision certainly most source available such task, it once identified, individual first visually fixates it, then initiates his her (for review 1992). fast aiming initiated from stationary position, sequence actions seen where accelerates towards target, later move relatively slowly order accurately hit target. suggested channel processes retina (beyond lSo angle). would best suited processing highspeed (between 10o 200o angle/s), encompassing velocities responsible control postulated static slow ( Support motor studies equivocal. Firstly, utility peripheral ensure obtained participants had constraint meet did have end their (i.e., "sweeping" movement; Abahnini, Proteau, Temprado, 1997; Bard, Hay, Fleury, 1985; Paillard, Larue, 1990; Blouin, Teasdale, 1993); conventional tasks requiring (i. …