Hemispatial Neglect
Updated 2026-08-02
INTRODUCTION
English translation pending.
CORE DEFINITION
Hemispatial neglect, most often following damage to the right parietal cortex, is a failure to attend to or act on the side of space opposite the lesion, typically the left. Patients may eat only from the right half of a plate, draw only the right side of a clock, or deny ownership of a left limb, even though their visual fields are intact. It is a disorder of attention and internal representation rather than of sensation, and it can occur without any loss of visual acuity. Neglect strongly predicts poor rehabilitation outcomes after stroke.
SCAFFOLDING EFFECT
Reduce cognitive load
- Detect structural blind spots: check whether an organization systematically ignores one class of information. - Force coverage: build external prompts that make the ignored side impossible to skip. - Redesign attention: fix the routing and incentives that decide what reaches decision-makers.
Anchor fast decisions
Attention networks, especially in the right hemisphere, normally monitor both sides of space. When that circuitry is damaged, the contralateral half loses its representation in the brain's internal model of the world, so it is not merely unseen but absent from awareness. Because the deficit lies in attention rather than in the eyes, patients remain unaware of the gap and often deny it, which is why external prompts work better than encouragement.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Hemispatial_neglectverified
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