Please use this identifier to cite or link to this item: http://ahro.austin.org.au/austinjspui/handle/1/12093
Title: The perception of positive and negative facial expressions by unilateral stroke patients.
Authors: Abbott, Jacenta D;Wijeratne, Tissa;Hughes, Andrew J;Perre, Diana;Lindell, Annukka K
Affiliation: School of Psychological Science, La Trobe University, Bundoora, VIC, Australia. Electronic address: jd2abbott@students.latrobe.edu.au.
Western Health, Victoria, Australia. Electronic address: Tissa.Wijeratne@wh.org.au.
Austin Health, Victoria, Australia. Electronic address: ajhughes@unimelb.edu.au.
Western Health, Victoria, Australia. Electronic address: Diana.Perre@wh.org.au.
School of Psychological Science, La Trobe University, Bundoora, VIC, Australia. Electronic address: a.lindell@latrobe.edu.au.
Issue Date: 19-Feb-2014
Citation: Brain and Cognition 2014; 86(): 42-54
Abstract: There remains conflict in the literature about the lateralisation of affective face perception. Some studies have reported a right hemisphere advantage irrespective of valence, whereas others have found a left hemisphere advantage for positive, and a right hemisphere advantage for negative, emotion. Differences in injury aetiology and chronicity, proportion of male participants, participant age, and the number of emotions used within a perception task may contribute to these contradictory findings. The present study therefore controlled and/or directly examined the influence of these possible moderators. Right brain-damaged (RBD; n=17), left brain-damaged (LBD; n=17), and healthy control (HC; n=34) participants completed two face perception tasks (identification and discrimination). No group differences in facial expression perception according to valence were found. Across emotions, the RBD group was less accurate thanthe HC group, however RBD and LBD group performancedid not differ. The lack of difference between RBD and LBD groups indicates that both hemispheres are involved in positive and negative expression perception. The inclusion of older adults and the well-defined chronicity range of the brain-damaged participants may have moderated these findings. Participant sex and general face perception ability did not influence performance. Furthermore, while the RBD group was less accurate than the LBD group when the identification task tested two emotions, performance of the two groups was indistinguishable when the number of emotions increased (four or six). This suggests that task demand moderates a study's ability to find hemispheric differences in the perception of facial emotion.
Internal ID Number: 24561822
URI: http://ahro.austin.org.au/austinjspui/handle/1/12093
DOI: 10.1016/j.bandc.2014.01.017
URL: http://www.ncbi.nlm.nih.gov/pubmed/24561822
Type: Journal Article
Subjects: Emotion
Facial
Lateralisation
Perception
Stroke
Adult
Affect
Aged
Aged, 80 and over
Discrimination (Psychology)
Facial Expression
Female
Humans
Male
Middle Aged
Stroke.psychology
Visual Perception
Young Adult
Appears in Collections:Journal articles

Files in This Item:
There are no files associated with this item.


Items in AHRO are protected by copyright, with all rights reserved, unless otherwise indicated.