Perceptual organization deficits in traumatic brain injury patients

Página do item simplificado
dc.contributor.authorCosta T.L.
dc.contributor.authorZaninotto A.L.C.
dc.contributor.authorBenute G.G.
dc.contributor.authorDe Lucia M.C.S.
dc.contributor.authorPaiva W.S.
dc.contributor.authorWagemans J.
dc.contributor.authorBoggio P.S.
dc.date.accessioned2024-03-13T00:56:02Z
dc.date.available2024-03-13T00:56:02Z
dc.date.issued2015
dc.description.abstract© 2015 Elsevier Ltd.Traumatic brain injury (TBI) is a prevalent condition and there is limited visual perception research with this population. Here, we investigated perceptual organization changes in a rather homogeneous sample of closed head TBI outpatients with diffuse axonal injury only and no other known comorbidities. Patients had normal or corrected visual acuity. Perceptual organization was measured with the Leuven Perceptual Organization Screening Test (L-POST), a coherent motion task (CM) and the Leuven Embedded Figures Test (L-EFT). These tests were chosen to screen for deficits in different aspects of perceptual organization (L-POST), to evaluate local and global processing (L-EFT) and grouping in a dynamic set of stimuli (CM). TBI patients were significantly impaired compared to controls in all measures for both response time and accuracy, except for CM thresholds and object recognition subtests. The TBI group was similarly affected in all aspects of the L-EFT. TBI was also similarly affected in all perceptual factors of the L-POST. No significant correlations were found between scores and time post-injury, except for CM thresholds (rs=-0.74), which might explain the lack of group-level differences. The only score significantly correlated to IQ was L-EFT response time (rs=-0.67). These findings demonstrate that perceptual organization is diffusely affected in TBI and this effect has no substantial correlations with IQ. As many of the neuropsychological tests used to measure different cognitive functions involve some level of visual discrimination and perceptual organization demands, these results must be taken into account in the general neuropsychological evaluation of TBI patients.
dc.description.firstpage142
dc.description.lastpage152
dc.description.volume78
dc.identifier.doi10.1016/j.neuropsychologia.2015.10.008
dc.identifier.issn1873-3514
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/36133
dc.relation.ispartofNeuropsychologia
dc.rightsAcesso Restrito
dc.subject.otherlanguageCoherent motion
dc.subject.otherlanguageDiffuse axonal injury
dc.subject.otherlanguageEmbedded figures
dc.subject.otherlanguageL-POST
dc.subject.otherlanguagePerceptual organization
dc.subject.otherlanguageTraumatic brain injury
dc.titlePerceptual organization deficits in traumatic brain injury patients
dc.typeArtigo
local.scopus.citations12
local.scopus.eid2-s2.0-84944051836
local.scopus.subjectAdolescent
local.scopus.subjectAdult
local.scopus.subjectBrain Injuries
local.scopus.subjectCase-Control Studies
local.scopus.subjectHead Injuries, Closed
local.scopus.subjectHumans
local.scopus.subjectIntelligence
local.scopus.subjectIntelligence Tests
local.scopus.subjectMotion Perception
local.scopus.subjectNeuropsychological Tests
local.scopus.subjectPerceptual Disorders
local.scopus.subjectReaction Time
local.scopus.subjectRecognition (Psychology)
local.scopus.subjectSeverity of Illness Index
local.scopus.subjectTime Factors
local.scopus.subjectYoung Adult
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84944051836&origin=inward
Arquivos
Coleções
Artigos de periódico