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- W2897938084 abstract "The memory-delay saccade task is often used to separate visual and motor responses in oculomotor structures such as the superior colliculus(SC), with the assumption that these same responses would sum with a short delay during immediate ‘reactive’ saccades to visual stimuli. However, it is also possible that additional signals (suppression, delay) alter visual and/or motor response in the memory delay task. Here, we compared the spatiotemporal properties of visual and motor responses of the same SC neurons recorded during both the reactive and memory-delay tasks in two head-unrestrained monkeys. Comparing tasks, visual (aligned with target onset) and motor (aligned on saccade onset) responses were highly correlated across neurons, but the peak response of visual neurons, and peak motor responses (of both visuomotor and motor neurons) were significantly higher in the reactive task. Receptive field organization was generally similar in both tasks. Spatial coding (along a Target-Gaze continuum) was also similar, with the exception that pure motor cells showed a stronger tendency to code future gaze location in the memory delay task, suggesting a more complete transformation. These results suggest that the introduction of a trained memory delay alters both the vigor and spatial coding of SC visual and motor responses, likely due to a combination of saccade suppression signals and greater signal noise accumulation during the delay in the memory delay task." @default.
- W2897938084 created "2018-10-26" @default.
- W2897938084 creator A5010394198 @default.
- W2897938084 creator A5019224502 @default.
- W2897938084 creator A5020170135 @default.
- W2897938084 creator A5037399155 @default.
- W2897938084 creator A5044243996 @default.
- W2897938084 date "2018-10-22" @default.
- W2897938084 modified "2023-10-15" @default.
- W2897938084 title "The Influence of a Memory Delay on Spatial Coding in the Superior Colliculus: Is Visual Always Visual and Motor Always Motor?" @default.
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