Saccadic tracking of a periodic target motion in the cat.
Cats were tested for their ability to follow a dot target which periodically jumps horizontally from side to side. They can learn to perform saccadic tracking of various stimulus frequencies, and often they produce saccades predicting the target displacements. The preferred stimulus frequency for response to synchronize was in the 0.5-Hz range. Cats tend to undershoot the target. They also tend to adopt a strategy of locking predominantly to one direction of displacement, but they can be trained to reverse this preferred side or to lock to both sides. Saccades to the preferred side are more accurate, and longer and slower in comparison to saccades to the other side, thus demonstrating a velocity-accuracy trade-off phenomenon in the cat responses. Saccadic characteristics as expressed by the main sequence are apparently a stable property independent of the stimulus frequency.
Occupational Health and Rehabilitation Institute, Loewenstein Hospital, Raanana, Israel.
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Ron
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Schwartz
D000054:Acceleration; D000818:Animals; D001143:Arousal; D001288:Attention; D002415:Cats; D005133:Eye Movements; D009039:Motion Perception; D009949:Orientation; D011930:Reaction Time; D012438:Saccades