Impact of simulated central scotomas on visual search in natural scenes.

ABSTRACT:

Purpose

In performing search tasks, the visual system encodes information across the visual field at a resolution inversely related to eccentricity and deploys saccades to place visually interesting targets upon the fovea, where resolution is highest. The serial process of fixation, punctuated by saccadic eye movements, continues until the desired target has been located. Loss of central vision restricts the ability to resolve the high spatial information of a target, interfering with this visual search process. We investigate oculomotor adaptations to central visual field loss with gaze-contingent artificial scotomas.

Methods

Spatial distortions were placed at random locations in 25° square natural scenes. Gaze-contingent artificial central scotomas were updated at the scre

SUBMITTER: McIlreavy L 

PROVIDER: S-EPMC3432450 | biostudies-literature | 2012 Sep

REPOSITORIES: biostudies-literature