Unilateral Stroke : Computer-based Assessment Uncovers Non-Lateralized and Contralesional Visuoattentive Deficits
| Autor: | Raimo Sepponen, Hanna Jokinen, Marja Hietanen, Outi Vuori, Mario Bonato, Sanna Villarreal, Matti Linnavuo |
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| Přispěvatelé: | Department of Neurosciences, HUS Neurocenter, Department of Psychology and Logopedics, Clinicum, Neurologian yksikkö |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Visual perception
Audiology Functional Laterality 3124 Neurology and psychiatry Task (project management) 0302 clinical medicine Selective attention Stroke Non-spatial attention DAMAGE Visual neglect General Neuroscience 05 social sciences Computer based FALSE DISCOVERY RATE Psychiatry and Mental health Clinical Psychology Attention impairment Brain damage Reaction times Computers Humans Reaction Time Visual Perception Perceptual Disorders medicine.symptom SPATIAL NEGLECT medicine.medical_specialty AWARENESS 515 Psychology 050105 experimental psychology Lateralization of brain function 03 medical and health sciences medicine 0501 psychology and cognitive sciences MODULATION VISUAL-SEARCH SUSTAINED ATTENTION DEFICITS LESIONS business.industry Hemispatial neglect medicine.disease HEMISPATIAL NEGLECT Neurology (clinical) business 030217 neurology & neurosurgery |
| ISSN: | 1355-6177 |
| Popis: | Objective:Patients with unilateral stroke commonly show hemispatial neglect or milder contralesional visuoattentive deficits, but spatially non-lateralized visuoattentive deficits have also been reported. The aim of the present study was to compare spatially lateralized (i.e., contralesional) and non-lateralized (i.e., general) visuoattentive deficits in left and right hemisphere stroke patients.Method:Participants included 40 patients with chronic unilateral stroke in either the left hemisphere (LH group, n = 20) or the right hemisphere (RH group, n = 20) and 20 healthy controls. To assess the contralesional deficits, we used a traditional paper-and-pencil cancellation task (the Bells Test) and a Lateralized Targets Computer Task. To assess the non-lateralized deficits, we developed a novel large-screen (173 × 277 cm) computer method, the Ball Rain task, with moving visual stimuli and fast-paced requirements for selective attention.Results:There were no contralesional visuoattentive deficits according to the cancellation task. However, in the Lateralized Targets Computer Task, RH patients missed significantly more left-sided than right-sided targets in bilateral trials. This omission distribution differed significantly from those of the controls and LH patients. In the assessment of non-lateralized attention, RH and LH patients missed significantly more Ball Rain targets than controls in both the left and right hemifields.Conclusions:Computer-based assessment sensitively reveals various aspects of visuoattentive deficits in unilateral stroke. Patients with either right or left hemisphere stroke demonstrate non-lateralized visual inattention. In right hemisphere stroke, these symptoms can be accompanied by subtle contralesional visuoattentive deficits that have remained unnoticed in cancellation task. |
| Databáze: | OpenAIRE |
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