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Velocity of rotation was observed by 10 Os in a rotating simulator during and following accelerations about a vertical axis which varied between .5°-1.5%ec a and .006°-.030°/sec 3 and continued for 2-3 min. Trials with 0 acceleration were also included. Magnitude estimates of velocity of rotation increased and then declined during the constant accelerations, while more complex effects occurred during increasing accelerations.Aftereffects and an autokinetic effect were also observed. Current theory of vestibular function is considered in the light of these results.

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anees of labyrinthine defective subjects (L-D's) on a single rail of optimum difficulty become disturbed along the time axis of rotation, and (2) compare the per¬ formances of these L-D subjects with those of normal subjects in terms of postrotation effects as studied with a new standardized ataxia test battery. Rotation

No abstract