Cortical Correlates of Human Motion Perception Biases

摘要: Human sensory perception is not a faithful reproduction of the environment. For example, at low contrast, objects appear to move slower and flicker faster than veridical. Although these biases have been observed robustly, their neural underpinning unknown, thus suggesting possible disconnect well established link between motion cortical responses. We used functional imaging examine encoding speed in human cortex scale neuronal populations asked where how are encoded. Decoding, voxel population, forward-encoding analyses revealed toward slow speeds high temporal frequencies contrast earliest visual regions, matching perception. These findings offer resolution responses humans. Moreover, considered leading example Bayesian inference because they can be interpreted as prior for speeds. Therefore, our data suggest that perceptual priors this sort encoded by same early areas provide evidence.