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Related Experiment Video

Updated: Mar 19, 2026

Visualizing Visual Adaptation

Visualizing Visual Adaptation

Published on: April 24, 2017

Modulation of visual attention by prismatic adaptation.

Stephanie Clarke¹, Sonia Crottaz-Herbette¹

¹Service de Neuropsychologie et de Neuroréhabilitation, Centre Hospitalier Universitaire Vaudois and Université de Lausanne, Lausanne, Switzerland.

Neuropsychologia

|June 26, 2016

Summary

Rightward prismatic adaptation helps neglect patients by shifting brain activity. This intervention rebalances attention networks, improving spatial bias and target detection in neglect patients.

Keywords:

Dorsal and ventral attentional system Hemispatial neglect Inferior parietal lobule Visual representations fMRI human

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Area of Science:

Neuroscience
Cognitive Psychology
Rehabilitation Science

Background:

Lateralized deficits in neglect impact target detection and attention.
Visuo-motor adaptation using prisms is a known intervention for neglect.

Purpose of the Study:

To review evidence on the neural mechanisms of rightward prismatic adaptation in neglect.
To propose a model explaining how prismatic adaptation affects spatial bias.

Main Methods:

Review of existing studies on rightward prismatic adaptation and neglect.
Analysis of neural shifts in visual field representation and attentional systems.

Main Results:

Rightward prismatic adaptation shifts visual field representation to the left inferior parietal lobule.
This shift alters hemispheric dominance within the ventral attentional system.
Prismatic adaptation may redirect visual input to the dorsal attentional system, balancing hemispheric components.

Conclusions:

The proposed Shift in Hemispheric Dominance within the Ventral Attentional System (SHD-VAS) model explains prismatic adaptation effects.
This model accounts for behavioral data in both neglect patients and normal subjects.
Rightward prismatic adaptation offers a potential therapeutic strategy for spatial bias in neglect.