Abstract:
OBJECTIVES:Previous studies have indicated abnormalities in response flexibility in pediatric bipolar disorder (BD). Dysfunction in response flexibility may contribute to the pattern of behavioral and emotional dysregulation that is characteristic of BD, since depressed and manic patients respond inflexibly to emotional stimuli (i.e., anhedonia in the case of depression or inappropriate positive affect in the case of mania). The present study was undertaken to determine if neuronal responses differed between BD and control subjects on a simple motor response flexibility task. METHODS:To elucidate the neural substrates mediating response flexibility in pediatric BD, we studied 25 youth with BD and 17 age-, gender- and IQ-matched controls (CON) as they performed the change task while undergoing event-related functional magnetic resonance imaging (fMRI). The change task is a new fMRI task that requires subjects to both inhibit and replace a prepotent motor response with another motor response after the initial response has been cued. RESULTS:On correctly performed change trials relative to correctly performed go trials, BD patients generated significantly more activity in the left dorsolateral prefrontal cortex (DLPFC) and in the primary motor cortex than did healthy controls, even though performance levels did not differ across groups. CONCLUSIONS:These results indicate that functional deficits within the left DLPFC may mediate deficits in response flexibility in pediatric BD. This deficit may extend beyond the realm of motor control and also affect emotion regulation.
journal_name
Bipolar Disordjournal_title
Bipolar disordersauthors
Nelson EE,Vinton DT,Berghorst L,Towbin KE,Hommer RE,Dickstein DP,Rich BA,Brotman MA,Pine DS,Leibenluft Edoi
10.1111/j.1399-5618.2007.00419.xsubject
Has Abstractpub_date
2007-12-01 00:00:00pages
810-9issue
8eissn
1398-5647issn
1399-5618pii
BDI419journal_volume
9pub_type
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pub_type: 杂志文章,评审
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更新日期:2005-06-01 00:00:00
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journal_title:Bipolar disorders
pub_type: 杂志文章
doi:10.1111/j.1399-5618.2004.00164.x
更新日期:2005-02-01 00:00:00
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更新日期:2003-01-01 00:00:00
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doi:10.1111/bdi.12771
更新日期:2019-09-01 00:00:00
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journal_title:Bipolar disorders
pub_type: 杂志文章
doi:10.1111/j.1399-5618.2006.00318.x
更新日期:2006-06-01 00:00:00
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journal_title:Bipolar disorders
pub_type: 杂志文章
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更新日期:2002-10-01 00:00:00
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pub_type: 杂志文章
doi:10.1111/bdi.12906
更新日期:2020-09-01 00:00:00
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更新日期:2014-09-01 00:00:00
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pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2000-03-01 00:00:00
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更新日期:2005-08-01 00:00:00
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更新日期:2010-05-01 00:00:00
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pub_type: 杂志文章,评审
doi:10.1111/j.1399-5618.2008.00639.x
更新日期:2008-12-01 00:00:00
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pub_type: 杂志文章,随机对照试验
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更新日期:2015-08-01 00:00:00
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pub_type: 杂志文章
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更新日期:2006-10-01 00:00:00
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pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 杂志文章
doi:10.1111/j.1399-5618.2006.00281.x
更新日期:2006-04-01 00:00:00
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pub_type: 杂志文章
doi:10.1111/j.1399-5618.2006.00369.x
更新日期:2006-10-01 00:00:00
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pub_type: 杂志文章,多中心研究
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更新日期:2017-09-01 00:00:00
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pub_type: 杂志文章
doi:10.1111/j.1399-5618.2008.00654.x
更新日期:2009-02-01 00:00:00
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pub_type: 杂志文章,meta分析,评审
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更新日期:2012-08-01 00:00:00
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pub_type: 杂志文章,多中心研究
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更新日期:2010-03-01 00:00:00
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pub_type: 杂志文章
doi:10.1111/j.1399-5618.2005.00267.x
更新日期:2005-12-01 00:00:00
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journal_title:Bipolar disorders
pub_type: 杂志文章,评审
doi:10.1034/j.1399-5618.2002.01191.x
更新日期:2002-08-01 00:00:00
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pub_type: 杂志文章,评审
doi:10.1034/j.1399-5618.2000.20303.x
更新日期:2000-09-01 00:00:00