Vector-Determined Direction of Apparent Motion in Multipath-Multistimulus Arrays
This paper reports the results of two experiments designed to compare vector theory and Korte’s third law accounts of perception of direction of motion in multipath stimulus arrays. The results indicate that durations of interstimulus interval (ISI) do not influence perception of direction of motion and consequently Korte’s third law does not apply. However, path selection phenomena were observed and were best described by vector theory; motion in multipath stimulus arrays followed the resultant of the vectors of the array.
As in previous studies of path selection in multipath stimulus arrays, reference path arrays were presented in order to form a basis for judging shifts in direction of motion due to spatial-temporal factors. The results of the present study indicate that this strategy is flawed because the factors that govern path selection in the ambiguous multipath array also influence perception of direction of motion in the “reference” path arrays.
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