No single, stable 3D representation can explain pointing biases in a spatial updating task.

ABSTRACT: People are able to keep track of objects as they navigate through space, even when objects are out of sight. This requires some kind of representation of the scene and of the observer's location but the form this might take is debated. We tested the accuracy and reliability of observers' estimates of the visual direction of previously-viewed targets. Participants viewed four objects from one location, with binocular vision and small head movements then, without any further sight of the targets, they walked to another location and pointed towards them. All conditions were tested in an immersive virtual environment and some were also carried out in a real scene. Participants made large, consistent pointing errors that are poorly explained by any stable 3D representation. Any explanation base

SUBMITTER: Vuong J 

PROVIDER: S-EPMC6715735 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature