J N Evanoff

Learn More
Our goal was to determine whether the vestibular response to vertical, z-axis body rotation in the dark is influenced by the magnitude of gravitoinertial force. We measured the nystagmus and the duration of illusory self-motion elicited in blindfolded subjects by cessation of such rotation during the free-fall, high, and terrestrial force phases of(More)
Smooth pursuit eye movements approaching the qualitative and quantitative characteristics of those elicited by a moving visual target were obtained in complete darkness with a moving tactile stimulus. Pursuit eye movements in response to tactile stimulation have longer latencies to onset and to offset of pursuit, are more often interrupted by saccades, and(More)
We examined the influence of voluntary gaze deviation on per-rotary vestibular nystagmus during trapezoidal velocity profiles. Gaze deviation in the direction of the fast-phase component of nystagmus significantly increased slow-phase amplitude, fast-phase amplitude and slow-phase velocity; gaze deviation in the direction of the slow phase marginally(More)
Susceptibility to motion sickness during exposure to constant levels of Coriolis, cross-coupling stimulation is lower in zero G and higher in 1.8 G than in a 1-G force environment (10, 13). The goal of the present experiment was to determine whether gravitoinertial force magnitude also influences oculomotor and perceptual responses to Coriolis,(More)
Rotation of the eyes about the visual axis is known as ocular torsion. A lateral inclination (a “roll”) of the head induces ocular torsion in the opposite direction, a response known as ocular counterrolling. For six subjects, we recorded the static (head still) and dynamic (head in oscillatory roll motion) ocular torsion in normal 1 g condition and also(More)
  • 1