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Autokinesis direction during and after eye turn

1973; Springer Science+Business Media; Volume: 13; Issue: 2 Linguagem: Inglês

10.3758/bf03214149

1532-5962

John Levy,

Neural dynamics and brain function

The aftereffect (AE) of eye turn on autokinesis direction is usually, but not always, opposite to the inducing turn direction. During four experiments, a model predicting the aftereffect’s time course and a new measure utilizing the concept of the position of random autokinetic movement (PRAKM) were developed. They showed that aftereffect direction alternates during dissipation and that its first direction is not a simple function of previous eye position, but of the process by which that position is achieved, suggesting that at least two processes are involved. In one S, versions produced the usual AE, while, after vergences, the AE was in the same direction as the inducing turn. Differential recruitment of these systems in monocular fixation could account for individual differences in the AE.