Neuronal response latency usually refers to the time between the
presentation of a visual stimulus and the elevation in firing rate that
follows. Expanding on this idea, the concept of response offset latency
refers to the time between the removal of a stimulus (or its
replacement with one that is less effective) and the resulting decline
in firing rate. The initial observation that offset latency is usually
shorter than onset latency (Bair et al.,
2002) has been called into question on the basis of the
pulsatile nature of visual stimuli presented on a CRT (Gawne & Woods, 2003). Here, a counter argument
is presented in support of the results of Bair et al., 2002.