Does Visual Background Information Influence Saccadic Adaptation?
It is well-known that the saccadic system shows an adaptive behavior (e.g. McLaughlin 1967; Deubel et al. 1986). Whenever a large systematic postsaccadic fixation error occurs, an adaptive modification in the system takes place. An elegant paradigm to study this phenomenon experimentally is based on the fact that changes in the visual world during a saccade are hardly detected (e.g. Bridgeman et al. 1975). Shifting the sac-cade target during visually guided saccades creates an artificial error. As a consequence, the eye does not land on the target, a corrective saccade is elicited and the additional target shift is gradually anticipated by the system by adapting the amplitude of the primary saccade. The visual processing underlying the signal which drives the adaptive process is still not completely understood.
KeywordsSaccade Amplitude Saccade Target Corrective Saccade Gain Time Fixation Spot
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