Saccadic Eye Movements

摘要: A saccade takes about 150–250 ms to plan and execute. The execution of a single 30 ms, but it can vary between 20 100 depending on the angular distance traveled by eye (amplitude). During this interval, eyes move at speed up 900 per second. Head-fixed saccades have amplitudes ranging 1.2 90 , with larger than tend be accompanied head movements. Saccades are also very accurate bringing line gaze typically within 1 target. As ballistic movements, that is, movements whose trajectory cannot changed during their execution, often require followed additional corrective saccades. For instance, made targets across more 10 undershoot target 10%, after short latency 150 saccade. Between two consecutive saccades, fixate area interest for variable interval averaging 300 ms. fixation, fixated is processed higher resolution taking advantage fact projects fovea. Most visual perception place interval. On other hand, vision attenuated saccade, mechanism known as saccadic suppression. This prevents experience blurred due image