Physiological characteristics of first order horizontal canal neurons, especially in their response to angular acceleration, were studied in 20 albino guinea pigs. The stimulus frequencies from 0.05 to 0.9Hz at the pendular angle of 25 degrees were employed in this experiment.
The average sensitivity of neurons to the angular velocity at the frequencies employed was about 0.4 to 0.5 spikes/sec/deg/sec. The Bode plots of the gain (10 log gain re acceleration) and phase lag against the logarithms of frequency were similar to those obtained in pigmented guinea pigs reported by Curthoys.
