Context cue-dependent saccadic adaptation in rhesus macaques cannot be elicited using color

Saccade adaptation is the gradual adjustment of saccade end point to maintain spatial accuracy. Contextual adaptation refers to a situation in which the adaptation-related change in saccade end point is contingent on the behavioral context in which the saccade is made. For example, in some situations, the same saccade to the same retinotopic location can be simultaneously adapted in opposite directions depending on the context in which it is made. Saccade adaptation has traditionally been studied in isolated movements, but in everyday life, saccades are often planned and executed in sequences. The oculomotor system may therefore have adaptive mechanisms specific to sequential saccades. Here, in five experiments, we investigated contextual saccade adaptation in sequences of saccades. In the first experiment, we demonstrate that saccades to a given retinotopic location can be simultaneously adapted in opposite directions depending on whether they occur in isolation or in a sequence. In the other experiments, we measured the extent to which properties of the previous and following saccades in a sequence can induce contextual saccade adaptation. Overall, we find that the existence, direction, and amplitude of previous and subsequent saccades, as well as the order of the current saccade within a movement sequence, can all induce contextual adaptation. These novel findings demonstrate the surprising flexibility of the system in maintaining end point accuracy, and support the idea that saccades made in a movement sequence are planned concurrently rather than independently.

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Contextual saccade adaptation induced by sequential saccades

Azadi

McPeek

2022

Journal of Neurophysiology

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Context cue-dependent saccadic adaptation in rhesus macaques cannot be elicited using color

Abstract: Cecala AL, Smalianchuk I, Khanna SB, Smith MA, Gandhi NJ. Context cue-dependent saccadic adaptation in rhesus macaques cannot be elicited using color.

Cited by 1 publication

References 60 publications

Contextual saccade adaptation induced by sequential saccades

Contextual saccade adaptation induced by sequential saccades

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