A dynamic texture lowers the apparent distance between objects, changing the correspondence between the actual relationships in the environment and the neuronal representations of those relationships. To comprehend the stage(s) of processing where adaptation-induced alterations occur, researchers explored the spatial tuning and spatial frame of reference of this aftereffect in the study.
They assessed apparent separation in Experiment 1 at various locations in relation to the adapted region, demonstrating a potent yet finely regulated compression effect. The spatial frame of reference of the effect was next examined, either by decoupling the spatial selectivity of adaptation in retinotopic and world-centered coordinates (Experiment 2) or by adding a gaze shift between the adaptation and test phases (Experiment 3).
According to the findings of the 2 trials, retinotopic and world-centered adaptation effects can both happen independently. Retinotopic adaptation did not transfer to world-centered coordinates after a saccade, and spatial attention to the position of the adaptor alone could not explain the world-centered transfer we observed (Experiment 4). Last but not least, they discovered that aftereffects in various reference frames had a comparable, confined spatial tuning profile (Experiment 5).
All of the findings pointed to an early visual cortex location for the neural representation of local separation, but they also showed that activity in higher visual regions could influence the representation.
Reference: jov.arvojournals.org/article.aspx?articleid=2783745
