Published by Unseen Progress, an independent publisher of caregiver research. Last reviewed 2026-05-10. Part of the stroke caregiver research overview.
Short answer. Hemispatial neglect — often called hemineglect or spatial neglect — is a disorder of attention, not of vision. The survivor's eye sees the left side of the world (after a right-hemisphere stroke); the brain fails to attend to it. The research by Heilman, Karnath, Robertson, and Barrett describes it as one of the most disabling and most under-diagnosed post-stroke deficits — present in roughly 30% of right-hemisphere strokes acutely (Buxbaum et al., 2004), and a strong predictor of poor functional outcome when missed. The home implication is large: families repeatedly experience the survivor not eating the left half of the plate, bumping into doorframes on the left, or "ignoring" them — and incorrectly conclude it is stubbornness, depression, or vision loss.
Heilman's foundational work (Heilman & Valenstein, 1979) established neglect as a separable disorder of spatial attention. The patient with neglect can see the affected side when explicitly cued, but does not spontaneously orient to it. This distinction is decisive — neglect is not "blindness on the left" (hemianopia), and the two often coexist but are tested and treated differently.
Karnath et al. (2001) localised the right-hemisphere lesion most associated with persistent neglect to the right inferior parietal lobule and the temporoparietal junction. Subsequent work has expanded the network to include frontal and subcortical contributions.
Buxbaum et al. (2004) and other cohort studies estimate acute prevalence of neglect in right-hemisphere stroke at roughly 30%, with persistent neglect at 6 months in 5–15%. Left-hemisphere strokes can produce right-sided neglect, but it is less common and typically less severe.
The 2016 AHA/ASA stroke rehabilitation guidelines (Winstein et al., 2016) recommend neglect screening for all stroke survivors with right-hemisphere involvement and active rehabilitation when neglect is present — citing functional impact and rehabilitation responsiveness.
Families often describe the same observations before the diagnosis is named:
The two most common misreadings, both wrong:
1. "It's the vision." Visual fields can be intact and neglect still severe. Visual field testing rules this in or out. 2. "They're doing it on purpose / they're depressed." Neglect is involuntary and unconscious. The survivor genuinely does not perceive the missing side as missing.
Robertson and colleagues (Robertson et al., 1998) frame neglect as a failure of spatial attention orienting that depresses overall arousal on the affected side. The clinical paradox is that survivors are typically unaware of the deficit — anosognosia is common in neglect — which means the survivor is not motivated to compensate. They do not feel they are missing anything.
The Kleim-Jones principles of experience-dependent plasticity (Kleim & Jones, 2008) still apply, but the substrate is attentional rather than motor. The treatments with the strongest evidence base directly target spatial attention rather than vision.
Rossetti et al. (1998) and subsequent trials demonstrated meaningful improvement in neglect from short bouts of prism adaptation — wearing prism glasses that displace the visual field rightward, then performing pointing tasks. After-effects persist beyond the prism-wearing session and generalise to functional tasks. Barrett and colleagues have refined the protocol for clinical use; multiple randomised trials and meta-analyses support modest, durable benefit.
Structured training to scan systematically leftward — initially with explicit cues, then fading the cues — improves performance on neglect tests and, in better trials, on functional tasks like reading and ADLs.
Robertson's work showed that voluntary movement of the affected limb in the affected hemispace boosts spatial attention to that side. The practical implication is that any task that gets the left hand active on the left side of the body has compounding effects.
Not a treatment but a daily-life enabler. The research supports placing important objects (food, the remote, the alarm) on the affected side as part of structured training — under supervision — so the survivor must orient leftward to engage them.
Visible markers (a red line down the left margin of a page; a coloured ribbon on the affected wrist) that the survivor can be trained to find first before scanning have evidence for improving reading and search tasks.
Neglect is a major fall and injury risk. Doorframes, cars, stovetops, and hot drinks on the affected side are concrete hazards. Driving with persistent neglect is contraindicated — see the separate article on return to driving after stroke.
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