Visual processing features in patients with visual spatial neglect recovering from right-hemispheric stroke.
Neurosci Lett
; 714: 134528, 2020 01 01.
Article
de En
| MEDLINE
| ID: mdl-31585212
ABSTRACT
OBJECTIVE:
Visual spatial neglect (VSN) is a disorder of spatial-temporal attention, often as a result of traumatic brain injury, including stroke. Accumulating evidence suggests that the recovery from VSN follows a very predictable pattern. In this study, we aimed to determine the specific electrophysiology readout that might have predictive value for recovery from VSN in the typical early events, including the recovery rate of visual processing, within the first four weeks of recovery.METHODS:
This was a prospective study of 18 right ischemic stroke patients with VSN who performed a visual cue-target task within 3 days after stroke. The patients were divided into two groups according to their outcome. We compared behavioral data, the amplitudes and latencies of ERP componentsï¼P1, N1, and P300ï¼ between patients with persistent-VSN (P-VSN) and those with rapid recovery-VSN (R-VSN).RESULTS:
The amplitudes and latencies of the P1 and N1 components were not significantly influenced by the validity of the cue-based expectancy (all pâ¯>â¯0.05). However, a longer mean P300 latency evoked an effective cue (pâ¯<â¯0.001), and there was a significant difference between the P-VSN and R-VSN groups when using the left target (left hemisphere, pâ¯=â¯0.014; right hemisphere, pâ¯=â¯0.027). The recovery rate found in our study (18.75% at four weeks after stroke) was lower than that of previously reported studies.CONCLUSIONS:
Our findings support the use of the event-related potential as a tool for investigating rapid recovery from VSN after stroke and suggest that other factors, such as an asymmetrical omission toward the contralateral side or impairment in the temporal processing capacity, might also be potential biomarkers of recovery.Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Troubles de la perception
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Perception visuelle
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Récupération fonctionnelle
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Potentiels évoqués
Type d'étude:
Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limites:
Adult
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Aged
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Female
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Humans
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Male
/
Middle aged
Langue:
En
Journal:
Neurosci Lett
Année:
2020
Type de document:
Article