The Saccade test  allows the alternate presentation of fixation targets on the screen which can be used to generate saccadic eye movements of a given amplitude and direction.



The Amplitude scroll bar sets the angular separation of the two fixation stimuli (calculated using the screen size and viewing distance information entered from the Options screen).


The Angle scroll bar sets the angle between the two fixation stimuli allowing vertical, horizontal or oblique saccades to be generated.


The Timing scroll bar sets the rate at which the two stimuli are alternated and hence the frequency of the saccades.


The Background and Stimulus colour can be changed using the corresponding colour picker controls.


The Stimulus size can be changed using the corresponding scroll bar.