On plotting amplitude-transition functions for voluntary eye saccades.

The first of two oppositely directed saccades may be small if the time interval between the two saccades is short. We have examined the merits of plotting the amplitude of the first saccade against saccadic interval. This plot provides a useful supplement to other approaches in the literature, as it is insensitive to variation due to extraneous factors or to task. Reasons for this are discussed.