An fMRI Investigation into Facial Affect Perception in Body Dysmorphic Disorder
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1
Swinburne University of Technology, Brain and Psychological Sciences Research Centre (BPsyC), Australia
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2
Monash University and The Alfred Hospital, Monash Alfred Psychiatry Research Centre, School of Psychology and Psychiatry, Faculty of Medicine, Nursing and Health Sciences, Australia
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3
Swinburne University of Technology, 2Brain and Psychological Sciences Research Centre (BPsyC), Faculty of Life and Social Sciences, Australia
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4
Monash University and The Alfred Hospital, Monash Alfred Psychiatry Research Centre, School of Psychology and Psychiatry, Faculty of Medicine, Australia
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5
Swinburne University of Technology, Brain and Psychological Sciences Research Centre (BPsyC), Faculty of Life and Social Sciences, Australia
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6
The University of Melbourne, Departments of Psychiatry and Behavioural Science, Australia
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7
St. Vincent's Hospital, Psychiatry, Australia
The current study investigated explicit and implicit facial affect perception (FAP) in Body Dysmorphic Disorder (BDD) patients compared to a sample of matched healthy controls. With particular focus on the perception of anger, the explicit emotion processing task asked participants to denote the emotional expression portrayed in neutral, happy, sad, fearful, or angry faces, as quickly and accurately as possible. Whilst the functional neuroanatomy of the implicit emotion processing was investigated using a gender discrimination task during fMRI, single faces were displayed on the screen of a neutral or angry expression. Group differences were investigated using discrete regions of interest (ROIs). 19 BDD participants and 21 healthy controls completed the explicit behavioural task; and of those, 11 BDD patients and 14 healthy controls went on complete the implicit task during fMRI. The BDD patients made more errors during explicit processing to the emotion anger, as well as sad. There were no group reaction time differences for anger but there were for neutral. During the fMRI implicit task, there was significantly higher activation in the right inferior frontal gyrus (IFG) in comparison to the control group. No significant difference in activity was evident between the groups in the amygdala or the caudate in either hemisphere. The findings in the current study support the notion that individuals with BDD have deficits in general emotion perception in faces, making consistently more errors than healthy controls and responding slower in some emotions. The fMRI finding has important clinical implications for BDD as the IFG has links to response inhibition, possibly explaining the repetitive behaviours present in BDD.
Keywords:
functional MRI,
ROI,
bdd,
Affect perception,
facial processing,
right IFG
Conference:
XII International Conference on Cognitive Neuroscience (ICON-XII), Brisbane, Queensland, Australia, 27 Jul - 31 Jul, 2014.
Presentation Type:
Poster
Topic:
Emotional and Social Processes
Citation:
Grace
S,
Buchanan
B,
Hughes
M,
Maller
J,
Nibbs
R,
Castle
D and
Rossell
S
(2015). An fMRI Investigation into Facial Affect Perception in Body Dysmorphic Disorder.
Conference Abstract:
XII International Conference on Cognitive Neuroscience (ICON-XII).
doi: 10.3389/conf.fnhum.2015.217.00189
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Received:
19 Feb 2015;
Published Online:
24 Apr 2015.
*
Correspondence:
Miss. Sally Grace, Swinburne University of Technology, Brain and Psychological Sciences Research Centre (BPsyC), Melbourne, Australia, sallyagrace@gmail.com
Mr. Ben Buchanan, Monash University and The Alfred Hospital, Monash Alfred Psychiatry Research Centre, School of Psychology and Psychiatry, Faculty of Medicine, Nursing and Health Sciences, Melbourne, Australia, Buchanan.ben@gmail.com
Dr. Matthew Hughes, Swinburne University of Technology, 2Brain and Psychological Sciences Research Centre (BPsyC), Faculty of Life and Social Sciences, Melbourne, Australia, matthewhughes@swin.edu.au
Dr. Jerome Maller, Monash University and The Alfred Hospital, Monash Alfred Psychiatry Research Centre, School of Psychology and Psychiatry, Faculty of Medicine, Melbourne, Australia, jerome.maller@monash.edu
Mr. Richard Nibbs, Swinburne University of Technology, Brain and Psychological Sciences Research Centre (BPsyC), Faculty of Life and Social Sciences, Melbourne, Australia, rnibbs@swin.edu.au
Dr. David Castle, The University of Melbourne, Departments of Psychiatry and Behavioural Science, Melbourne, Australia, David.CASTLE@svhm.org.au
Prof. Susan Rossell, Swinburne University of Technology, Brain and Psychological Sciences Research Centre (BPsyC), Faculty of Life and Social Sciences, Melbourne, Australia, SRossell@srossell.com