Visual adaptation selective for individual limbs reveals hierarchical human body representation.

ABSTRACT: The spatial relationships between body parts are a rich source of information for person perception, with even simple pairs of parts providing highly valuable information. Computation of these relationships would benefit from a hierarchical representation, where body parts are represented individually. We hypothesized that the human visual system makes use of such representations. To test this hypothesis, we used adaptation to determine whether observers were sensitive to changes in the length of one body part relative to another. Observers viewed forearm/upper arm pairs where the forearm had been either lengthened or shortened, judging the perceived length of the forearm. Observers then adapted to a variety of different stimuli (e.g., arms, objects, etc.) in different orientations and vis

SUBMITTER: Bratch A 

PROVIDER: S-EPMC8142707 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature