Seeing without a Scene: Neurological Observations on the Origin and Function of the Dorsal Visual Stream.

ABSTRACT: In all vertebrates, visual signals from each visual field project to the opposite midbrain tectum (called the superior colliculus in mammals). The tectum/colliculus computes visual salience to select targets for context-contingent visually guided behavior: a frog will orient toward a small, moving stimulus (insect prey) but away from a large, looming stimulus (a predator). In mammals, visual signals competing for behavioral salience are also transmitted to the visual cortex, where they are integrated with collicular signals and then projected via the dorsal visual stream to the parietal and frontal cortices. To control visually guided behavior, visual signals must be encoded in body-centered (egocentric) coordinates, and so visual signals must be integrated with information encoding eye po

SUBMITTER: Rafal RD 

PROVIDER: S-EPMC11121949 | biostudies-literature | 2024 May

REPOSITORIES: biostudies-literature