TY  - JOUR
PY  - 1995//
TI  - On-line visual control of aiming movements?
JO  - Acta psychologica
A1  - Spijkers, W.
A1  - Spellerberg, S.
SP  - 333
EP  - 348
VL  - 90
IS  - 1-3
N2  - Two experiments are reported which addressed the flexibility of visuo-motor processing by manipulating the availability of visual information while executing a discrete aiming movement. The flexibility of visuo-motor processing was tested by unexpectedly changing the proportion of the movement trajectory that visual feedback was present. Visual feedback was manipulated for a short (0.30), medium (0.60) or long (0.90) proportion of the trajectory within a block of trials. Each of these three proportions of vision occlusion (Experiment 1) or visual disclusion (Experiment 2) during the initial trajectory was examined. Within a visual condition, one of the three visual feedback proportions occurred with a high probability (p = 0.72), whereas the remaining two proportions each occurred with a low probability (p = 0.14). The results clearly indicated that spatial accuracy was determined by the actual vision period, independent of its probability of occurrence. The data are consistent with a model of continuous on-line control of movement execution.<p /> <p>Language: en</p>
LA  - en
SN  - 0001-6918
UR  - http://dx.doi.org/
ID  - ref1
ER  -