Daily activities, such as walking, may require dynamic modulation of vestibular input onto
motoneurons. This dynamic modulation is difficult to identify in humans due to limitations in
the delivery and analysis of current vestibular probes, such as galvanic vestibular
stimulation. Stochastic vestibular stimulation, however, provides an alternative method to
extract human vestibular reflexes. Here, we used time-dependent coherence and time-
dependent cross-correlation, coupled with stochastic vestibular stimulation, to investigate …

METHODS Subjects. Nine healthy subjects (4 women, height 170 9 cm, mass 68 13 kg)
between the ages of 21 and 34 yr, with no known history of neurological disease or injury,
participated in this study. Each subject gave his or her written, informed consent to the
procedures approved by the University of British Columbia's clinical research ethics board.
Stimulus. Binaural bipolar vestibular stimulation was delivered using gel-coated carbon
rubber electrodes (9 cm2) secured over the mastoid processes with an elastic headband …