Abstract
Postural change was analyzed during unilateral and bilateral caloric stimulation with ice water. During stimulation the normal subject was asked to maintain an upright position on a platform. Postural change was divided into postural deviation and body sway by a digital filter with reference to the power spectrum of the DC record. Right forward postural deviation and increased right-left and anterior-posterior body sway were observed during right caloric stimulation. Forward postural deviation and increased anterior-posterior body sway were observed during bilateral caloric stimulation. These results suggest that the neuronal mechanism of postural deviation and of body sway is not the same.
