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• W4311632343 abstract "Abstract Prior knowledge facilitates our perception and goal-directed behaviors in the dynamic world, particularly when sensory input is lacking or noisy. However, the neural mechanisms underlying the improvement in sensorimotor behaviors by prior expectations remain unknown. In this study, we examine the neural activity in the middle temporal (MT) area of visual cortex while monkeys perform a smooth pursuit eye movement task with prior expectation of the visual target’s motion direction. Prior expectations discriminately reduce the MT neural responses depending on their preferred directions, only when the sensory evidence is weak. This response reduction effectively sharpens neural population direction tuning. Simulations with a realistic MT population demonstrate that sharpening the tuning explains both the biases and variabilities in smooth pursuit, thus suggesting that neural computations in the sensory area alone can underpin the integration of prior knowledge and sensory evidence. State-space analysis further supports this by revealing neural signals of prior expectation in the MT population activity that correlate with behavioral changes." @default.
• W4311632343 created "2022-12-27" @default.
• W4311632343 creator A5017288403 @default.
• W4311632343 creator A5034110745 @default.
• W4311632343 creator A5060113695 @default.
• W4311632343 creator A5076353306 @default.
• W4311632343 date "2022-12-05" @default.
• W4311632343 modified "2023-09-27" @default.
• W4311632343 title "Prior expectation enhances sensorimotor behavior by modulating population tuning and subspace activity in the sensory cortex" @default.
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• W4311632343 doi "https://doi.org/10.1101/2022.12.04.516847" @default.
• W4311632343 hasPublicationYear "2022" @default.
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