TY - JOUR PY - 2005// TI - Calibration, information, and control strategies for braking to avoid a collision JO - Journal of experimental psychology: human perception and performance A1 - Fajen, Brett R. SP - 480 EP - 501 VL - 31 IS - 3 N2 - This study explored visual control strategies for braking to avoid collision by manipulating information about speed of self-motion. Participants watched computer-generated displays and used a brake to stop at an object in the path of motion. Global optic flow rate and edge rate were manipulated by adjusting eye-height and ground-texture size. Stopping distance, initiation of braking, and the magnitude of brake adjustments were influenced by both optical variables, but global optic flow rate had a stronger effect. A new model is introduced according to which braking is controlled by keeping the perceived ideal deceleration, based in part on global optic flow rate, within a "safe" region between 0 and the maximum deceleration of the brake.

Language: en

LA - en SN - 0096-1523 UR - http://dx.doi.org/10.1037/0096-1523.31.3.480 ID - ref1 ER -