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Free keywords:
Adolescent; Adult; Attention; Entorhinal Cortex; Eye Movements; Female; Humans; Image Processing, Computer-Assisted; Magnetic Resonance Imaging; Male; Orientation; Oxygen; Photic Stimulation; Space Perception; Spatial Navigation; Young Adult
Abstract:
When participants performed a visual search task, functional MRI responses in entorhinal cortex exhibited a sixfold periodic modulation by gaze-movement direction. The orientation of this modulation was determined by the shape and orientation of the bounded search space. These results indicate that human entorhinal cortex represents visual space using a boundary-anchored grid, analogous to that used by rodents to represent navigable space.