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Human Neurophysiology: Sampling the Perceptual World
David A. Leopold, Brian E. Russ Current Biology Volume 27, Issue 2, Pages R71-R73 (January 2017) DOI: /j.cub Copyright © Terms and Conditions
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Figure 1 Human visual experience is composed of sequences of brief fixations directed to points of interest in a scene. (A) The brain directs the eyes across a scene in order to acquire detailed information in important locations. With each new fixation, the retinal image is overwritten, yet the brain integrates the snapshots into a stable perceptual framework. (B) In the Podvalny et al. [3] study, neural responses during natural viewing differed fundamentally between retinotopic and face-selective visual cortex. In retinotopic visual cortex (left), responses during each fixation showed an initial suppression and then a transient excitatory response that was highly dependent on the gaze sampling dynamics. By contrast, sites in face-selective visual cortex (right) were marked by unique and characteristic temporal response profiles that were invariant to details of each fixation. Current Biology , R71-R73DOI: ( /j.cub ) Copyright © Terms and Conditions
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