Stereopsis in the periphery

Abstract:

We have shown previously that individuals with dense central scotomas due to macular degeneration have better eye-hand coordination when they have

coarse stereopsis. Here we investigate the hypothesis that this degree of stereopsis is determined by the scale of receptive fields at the eccentricity with

intact binocular function, i.e., at the eccentricity with input from corresponding locations in the two eyes. To test this hypothesis, we measured binocular

fusion and stereopsis in the periphery as a function of eccentricity in normal controls and show that these are indeed consistent with estimates of human

population receptive fields in putative disparity encoding regions of the cortex.  

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