Color perception deficits after posterior stroke: Not so rare after all?

Research output: Contribution to conference › Poster › Research › peer-review

Standard

Color perception deficits after posterior stroke : Not so rare after all? / Munk, Amalie H.; Starup, Elisabeth B.; Leff, Alex P.; Lambon Ralph, Matthew A.; Starrfelt, Randi; Robotham, Ro Julia.

2021. 100 Poster session presented at 14th Nordic Meeting in Neuropsychology, Frederiksberg, Denmark.

Research output: Contribution to conference › Poster › Research › peer-review

Harvard

Munk, AH, Starup, EB, Leff, AP, Lambon Ralph, MA, Starrfelt, R & Robotham, RJ 2021, 'Color perception deficits after posterior stroke: Not so rare after all?', 14th Nordic Meeting in Neuropsychology, Frederiksberg, Denmark, 25/08/2021 - 27/08/2021 pp. 100.

APA

Munk, A. H., Starup, E. B., Leff, A. P., Lambon Ralph, M. A., Starrfelt, R., & Robotham, R. J. (2021). Color perception deficits after posterior stroke: Not so rare after all?. 100. Poster session presented at 14th Nordic Meeting in Neuropsychology, Frederiksberg, Denmark.

Vancouver

Munk AH, Starup EB, Leff AP, Lambon Ralph MA, Starrfelt R, Robotham RJ. Color perception deficits after posterior stroke: Not so rare after all?. 2021. Poster session presented at 14th Nordic Meeting in Neuropsychology, Frederiksberg, Denmark.

Author

Munk, Amalie H. ; Starup, Elisabeth B. ; Leff, Alex P. ; Lambon Ralph, Matthew A. ; Starrfelt, Randi ; Robotham, Ro Julia. / Color perception deficits after posterior stroke : Not so rare after all?. Poster session presented at 14th Nordic Meeting in Neuropsychology, Frederiksberg, Denmark.1 p.

Bibtex

@conference{b8916696fc134fa3b806f9c12a4c1941,
title = "Color perception deficits after posterior stroke: Not so rare after all?",
abstract = "Background: Despite years of research on acquired deficits in color perception (cerebral achromatopsia/dyschromatopsia), there is still limited knowledge regarding the expression and prevalence of these deficits, although they are generally considered to be rare. Investigating patients with achromatopsia can provide important insights into the cortical areas involved in color perception, including the respective roles of the two hemispheres. Objective: The aim of this study was to explore color perception deficits in a large group of patients with stroke in the back of the brain. Method: The data presented are from the Back of the Brain project (BoB), a study assessing visual perception in a large group of stroke patients, recruited based on lesion location in the areas supplied by the posterior cerebral artery. 63 stroke patients as well as 44 matched controls were tested with the Farnsworth D-15 Dichotomous Color Blindness Test to assess color perception. Abnormality of performance was determined using single case statistics. In patients with abnormal performance, the lateralization of the lesions was examined and a qualitative analysis of the patterns of the patients{\textquoteright} color difficulties was performed. Results: 27% of the patients (17/63) showed significant problems with color discrimination. Of the total patient sample, 44% of patients with bilateral lesions, 34% with left hemisphere lesions and 10% with right hemisphere lesions had significant color discrimination impairments. There was a great diversity in both the patterns and severity of the impairments. Conclusions: The results suggest that, rather than being a rare occurrence, color perception difficulties after a PCA stroke are actually rather common, and that difficulties with perceiving colors after stroke vary greatly in expression and severity. The findings also point towards a left hemispheric domination in color processing, contradicting previous reports suggesting a possible right hemispheric specialization.",
keywords = "Faculty of Social Sciences, Cognition, Patients, Stroke/cerebrovascular",
author = "Munk, {Amalie H.} and Starup, {Elisabeth B.} and Leff, {Alex P.} and {Lambon Ralph}, {Matthew A.} and Randi Starrfelt and Robotham, {Ro Julia}",
year = "2021",
language = "English",
pages = "100",
note = "14th Nordic Meeting in Neuropsychology : From cradle to cognitive reserve ; Conference date: 25-08-2021 Through 27-08-2021",

}

RIS

TY - CONF

T1 - Color perception deficits after posterior stroke

T2 - 14th Nordic Meeting in Neuropsychology

AU - Munk, Amalie H.

AU - Starup, Elisabeth B.

AU - Leff, Alex P.

AU - Lambon Ralph, Matthew A.

AU - Starrfelt, Randi

AU - Robotham, Ro Julia

PY - 2021

Y1 - 2021

N2 - Background: Despite years of research on acquired deficits in color perception (cerebral achromatopsia/dyschromatopsia), there is still limited knowledge regarding the expression and prevalence of these deficits, although they are generally considered to be rare. Investigating patients with achromatopsia can provide important insights into the cortical areas involved in color perception, including the respective roles of the two hemispheres. Objective: The aim of this study was to explore color perception deficits in a large group of patients with stroke in the back of the brain. Method: The data presented are from the Back of the Brain project (BoB), a study assessing visual perception in a large group of stroke patients, recruited based on lesion location in the areas supplied by the posterior cerebral artery. 63 stroke patients as well as 44 matched controls were tested with the Farnsworth D-15 Dichotomous Color Blindness Test to assess color perception. Abnormality of performance was determined using single case statistics. In patients with abnormal performance, the lateralization of the lesions was examined and a qualitative analysis of the patterns of the patients’ color difficulties was performed. Results: 27% of the patients (17/63) showed significant problems with color discrimination. Of the total patient sample, 44% of patients with bilateral lesions, 34% with left hemisphere lesions and 10% with right hemisphere lesions had significant color discrimination impairments. There was a great diversity in both the patterns and severity of the impairments. Conclusions: The results suggest that, rather than being a rare occurrence, color perception difficulties after a PCA stroke are actually rather common, and that difficulties with perceiving colors after stroke vary greatly in expression and severity. The findings also point towards a left hemispheric domination in color processing, contradicting previous reports suggesting a possible right hemispheric specialization.

AB - Background: Despite years of research on acquired deficits in color perception (cerebral achromatopsia/dyschromatopsia), there is still limited knowledge regarding the expression and prevalence of these deficits, although they are generally considered to be rare. Investigating patients with achromatopsia can provide important insights into the cortical areas involved in color perception, including the respective roles of the two hemispheres. Objective: The aim of this study was to explore color perception deficits in a large group of patients with stroke in the back of the brain. Method: The data presented are from the Back of the Brain project (BoB), a study assessing visual perception in a large group of stroke patients, recruited based on lesion location in the areas supplied by the posterior cerebral artery. 63 stroke patients as well as 44 matched controls were tested with the Farnsworth D-15 Dichotomous Color Blindness Test to assess color perception. Abnormality of performance was determined using single case statistics. In patients with abnormal performance, the lateralization of the lesions was examined and a qualitative analysis of the patterns of the patients’ color difficulties was performed. Results: 27% of the patients (17/63) showed significant problems with color discrimination. Of the total patient sample, 44% of patients with bilateral lesions, 34% with left hemisphere lesions and 10% with right hemisphere lesions had significant color discrimination impairments. There was a great diversity in both the patterns and severity of the impairments. Conclusions: The results suggest that, rather than being a rare occurrence, color perception difficulties after a PCA stroke are actually rather common, and that difficulties with perceiving colors after stroke vary greatly in expression and severity. The findings also point towards a left hemispheric domination in color processing, contradicting previous reports suggesting a possible right hemispheric specialization.

KW - Faculty of Social Sciences

KW - Cognition

KW - Patients

KW - Stroke/cerebrovascular

M3 - Poster

SP - 100

Y2 - 25 August 2021 through 27 August 2021

ER -

ID: 279197466