Stability of apparent vertical and ocular countertorsion as a function of lateral tilt

The discrimination of a single temporal discontinuity, or gap, within an auditory pulse train was studied as a function of the relative magnitude of the gap region to its immediately surrounding interpulse intervals (the near surround) and to interpulse intervals flanking the near surround (the far surround). Near-surround effects substantially outweigh far-surround effects.