Citation

Sun LD, Goldberg ME. Annu. Rev. Vis. Sci. 2016; 2: 61-84.

Affiliation

Division of Neurobiology and Behavior, New York State Psychiatric Institute, New York, NY 10032.

Copyright

(Copyright © 2016, Annual Reviews)

DOI

10.1146/annurev-vision-082114-035407

PMID

28532350

Abstract

A classic problem in psychology is understanding how the brain creates a stable and accurate representation of space for perception and action despite a constantly moving eye. Two mechanisms have been proposed to solve this problem: Herman von Helmholtz's idea that the brain uses a corollary discharge of the motor command that moves the eye to adjust the visual representation, and Sir Charles Sherrington's idea that the brain measures eye position to calculate a spatial representation. Here, we discuss the cognitive, neuropsychological, and physiological mechanisms that support each of these ideas. We propose that both are correct: A rapid corollary discharge signal remaps the visual representation before an impending saccade, computing accurate movement vectors; and an oculomotor proprioceptive signal enables the brain to construct a more accurate craniotopic representation of space that develops slowly after the saccade.

Language: en

Keywords

corollary discharge; craniotopic representation; oculomotor proprioception; predictive; remapping; retinotopic representation; saccade; spatial accuracy