Voluntary Saccadic eye movements
exhibit visual, auditory, and auditory-visual bisensory origins. The study that tried to examine how changing the type of sensory inputs reveals the type of saccade the oculo motor system release; whether single step or double stepped.
The double-step auditory stimuli
designed for human triggered saccadic eye movements, detecting each saccade and estimated the saccade response characteristics, namely duration and latency.
Based on the latency, it is possible to determine the type of saccade generated
by the subject through a clustering technique. While keeping their duration
unchanged, the number of double-step saccades rises. The hindsight from this
finding is useful to guide the future stimulus designs to trigger specific
saccade types in humans. It demystifies the nature of dominant saccadic
response as we explore the changes of sounds in any controlled environment.
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