期刊
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE
卷 31, 期 5, 页码 1107-1123出版社
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0096-1523.31.5.1107
关键词
visually guided action; braking; perceptual-motor calibration; optic flow
Braking to avoid a collision can be controlled by keeping the deceleration required to stop (i.e., ideal deceleration) in the safe region below maximum deceleration, but maximum deceleration is not optically specified and can vary as conditions change. When brake strength was manipulated between participants using a simulated braking task, the ratio of ideal to maximum deceleration at brake onset was invariant across groups, suggesting that calibration involves scaling information about ideal deceleration in intrinsic units of maximum deceleration. Evidence of rapid recalibration was found when brake strength was manipulated within participants, and the presence of external forces that affect brake dynamics resulted in biases in performance. Discussion focuses on the role of calibration, internal models, and affordance perception in visually guided action.
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