Deficits in Attention to Emotional Stimuli Distinguish Youth with Severe Mood Dysregulation from Youth with Bipolar Disorder |
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| Authors: | Brendan A Rich Melissa A Brotman Daniel P Dickstein Derek G V Mitchell R James R Blair Ellen Leibenluft |
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| Institution: | (1) Department of Psychology, Catholic University of America, 4001 Harewood Rd, NE, Washington, DC 20064, USA;(2) Department of Health and Human Services, Mood and Anxiety Disorders Program, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, USA;(3) Brown University Medical School, Child and Adolescent Psychiatry, Providence, RI, USA;(4) Departments of Psychiatry and Anatomy & Cell Biology, University of Western Ontario, London, ON, Canada |
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| Abstract: | Studying attention in the context of emotional stimuli may aid in differentiating pediatric bipolar disorder (BD) from severe
mood dysregulation (SMD). SMD is characterized by chronic irritability, arousal, and hyper-reactivity; SMD youth frequently
receive a BD diagnosis although they do not meet DSM-IV criteria for BD because they lack manic episodes. We compared 57 BD
(14.4 ± 2.9 years old, 56% male), 41 SMD (12.6 ± 2.6 years old, 66% male), and 33 control subjects (13.7 ± 2.5 years old,
52% male) using the Emotional Interrupt task, which examines how attention is impacted by positive, negative, or neutral distracters.
We compared reaction time (RT) and accuracy and calculated attention interference scores by subtracting performance on neutral
trials from emotional trials. Between-group analyses indicated that SMD subjects had significantly reduced attention interference
from emotional distracters relative to BD and control subjects. Thus, attention in SMD youth was not modulated by emotional
stimuli. This blunted response in SMD youth may contribute to their affective and behavioral dysregulation. |
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