Abstract:
BACKGROUND:In addition to cognitive impairment, there are disruptions to mood and emotion processing in attention-deficit/hyperactivity disorder (ADHD) but little is known about their neural basis. We examined ADHD disturbances in mood and emotion recognition and underlying neural systems before and after treatment with stimulant medication. METHODS:Participants were 51 unmedicated ADHD adolescents and 51 matched healthy control subjects rated for depressed and anxious mood and accuracy for identifying facial expressions of basic emotion. Brain function was recorded using event-related potentials (ERPs) while subjects viewed these expressions. ADHD subjects were retested after 4 weeks, following treatment with methylphenidate (MPH). RESULTS:ADHD subjects showed a profile of emotion-related impairment: higher depression and anxiety, deficits in identifying threat-related emotional expressions in particular, and alterations in ERPs. There was a pronounced reduction in occipital activity during the early perceptual analysis of emotional expression (within 120 msec), followed by an exaggeration of activity associated with structural encoding (120-220 msec) and subsequent reduction and slowing of temporal brain activity subserving context processing (300-400 msec). Methylphenidate normalized neural activity and produced some improvement of emotion recognition but had no impact on negative mood. Improvements in neural activity with MPH were consistent predictors of improvement in clinical features of emotional lability and hyperactivity. CONCLUSIONS:Objective behavioral and brain function measures of emotion processing may provide a valuable addition to the clinical armamentarium for assessing emotional disturbances in ADHD and the efficacy of stimulants for treating these disturbances.
journal_name
Biol Psychiatryjournal_title
Biological psychiatryauthors
Williams LM,Hermens DF,Palmer D,Kohn M,Clarke S,Keage H,Clark CR,Gordon Edoi
10.1016/j.biopsych.2007.11.022subject
Has Abstractpub_date
2008-05-15 00:00:00pages
917-26issue
10eissn
0006-3223issn
1873-2402pii
S0006-3223(07)01176-6journal_volume
63pub_type
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journal_title:Biological psychiatry
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pub_type: 杂志文章
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journal_title:Biological psychiatry
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pub_type: 杂志文章
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pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:Biological psychiatry
pub_type: 杂志文章
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