Kinematic markers dissociate error correction from sensorimotor realignment during prism adaptation.

This study investigated the motor control mechanisms that enable healthy individuals to adapt their pointing movements during prism exposure to a rightward optical shift. In the prism adaptation literature, two processes are typically distinguished. Strategic motor adjustments are thought to drive the pattern of rapid endpoint error correction typically observed during the early stage of prism exposure.

Perceived self-tilt in dynamic visual stimuli: evidence for suppression by vestibulo-tactile inputs.

Perception of self-tilt is affected by shearing force acting on the otolith organs in the ears, by pressure acting on the tactile receptors in the skin, and by visual pattern falling on the retinae. We examined how the vestibular, somatosensory, and visual inputs interact in judging self-tilt in roll. Each of fourteen observers, sitting in a chair and gazing at a rotation pattern in the frontal plane, was tilted to various angles and verbally judged to what extent his/her body was tilted.

Perceived range, perceived velocity, and perceived duration of the body rotating in the frontal plane.

We investigated perceived range, perceived velocity, and perceived duration of the body rotating in the frontal plane (in roll). Specifically, to examine how shear to the otoliths in the inner ears and tactile pressure to the trunk affect judgments of range and velocity, in two experiments, we manipulated rotating range (30 degrees-160 degrees), rotating velocity (1.8 degrees/sec to 9.

Integration of visual and vestibulo-tactile inputs affecting apparent self-motion around the line of sight.

We investigated the effects of visual and vestibulo-tactile inputs on perceived self-motion. Each of 23 subjects was exposed to an optical pattern rotating around the roll axis (i.e.