ABSTRACT

The phase of the torsional component in the pitched forward position was opposite to that in the pitched back position. The vector of eye velocity was close to compensatory in every position. The gains of both the normal and canal plugged animals were modelled as a vector projection of head velocity onto the normals of the individual canals. The gain of the step response in the normal animals was computed by taking the average eye velocity of the individual responses during the first 200 ms after the stimulus achieved constant velocity and dividing it by the average stimulus velocity. After canal plugging, since the time constant was short, the gain of the step response was computed as the peak eye velocity divided by the velocity of rotation. Similar findings for horizontal eye velocity following six canal plugging were found in cats and in monkey.