# Dynamic context–based updating of object representations in the visual cortex

## TL;DR

The visual cortex updates object representations using predictable changes in the surrounding scene, even when objects are partially visible or occluded.

## Contribution

This study demonstrates that the visual cortex uses contextual geometric information to dynamically update object representations in natural vision.

## Key findings

- Visual cortex representations are enhanced when objects rotate congruently with the surrounding scene.
- Object orientation can be decoded from visual cortex activity even when the object is fully occluded.

## Abstract

Objects in real-world scenes are often poorly or partially visible, for example because they are occluded or appear in the periphery. An additional challenge of real-world vision is that it is dynamic, causing the appearance of objects (e.g., their size and orientation) to change as we move. Notably, however, these changes are predictable from the three-dimensional structure of the surrounding scene. In two functional magnetic resonance imaging studies, we find that the visual cortex dynamically updates object representations using this predictive contextual information. First, visual cortical representations of objects were enhanced when they rotated congruently (versus incongruently) with the surrounding scene. Second, the inferred orientation of the object could be decoded from visual cortex activity even when the object was fully occluded. These findings indicate that predictive processes in the visual cortex follow the geometric structure of the environment, providing a mechanism to support object perception in dynamic natural vision.

Objects are mentally rotated together with the changing viewpoint on a scene, affecting their representation in the visual cortex.