【摘 要】
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Information about translations and rotations of the body is critical for complex selfmotion perception during spatial navigation.However,little is known about the nature and function of their converge
【机 构】
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Institute of Neuroscience,Chinese Academy of Sciences,Shanghai
【出 处】
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第九届海内外华人神经科学家研讨会(The 9th Symposium for Chinese Neuroscientis
论文部分内容阅读
Information about translations and rotations of the body is critical for complex selfmotion perception during spatial navigation.However,little is known about the nature and function of their convergence in the cortex.We measured neural activity in multiple areas in the macaque parietal cortex in response to three different types of body motion applied through a motion platform: translation,rotation,and combined stimuli-curved motion.In contrast to single-modality cells preferring either translation or rotation stimuli,convergent cells tend to be optimally tuned to curvilinear motion.A weighted summation model captured the data well,suggesting that translation and rotation signals are integrated subadditively in the cortex.Interestingly,variation in the activity of convergent cells parallels behavioral outputs reported in human psychophysical experiments.We conclude that representation of curved self-motion perception is widely distributed in the primate sensory cortex.
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