Document Detail

Right hemisphere dysfunction in ADHD: visual hemispatial inattention and clinical subtype.
MedLine Citation:
PMID:  15505958     Owner:  NLM     Status:  MEDLINE    
The relationship between right hemisphere dysfunction and attention-deficit/hyperactivity disorder (ADHD) remains controversial. We administered a random letter cancellation test to 58 carefully selected adult patients meeting DSM-IV criteria for ADHD and 29 age- and education-matched controls. Patients with ADHD had a higher mean omission rate on the left side than the controls, and a greater percentage of ADHD patients than controls made more omissions on the left than on the right (L > R errors). ADHD patients who made L > R errors had lower performance IQ scores than ADHD patients who did not make L > R errors. However, ADHD patients who made L > R errors did not differ from ADHD patients who did not make L > R errors in ADHD subtype, medication response, or neuropsychological measures of attention, executive function, verbal memory, nonverbal memory, or academic achievement. Patients without a family history of ADHD were more likely to make L > R errors than patients with a family history of ADHD. This study provides support for the concept of right hemisphere dysfunction in a subset of patients with ADHD. However, ADHD patients who make L > R errors do not appear to represent a distinct clinical subgroup in terms of medication response, ADHD subtype, or neuropsychological test performance.
T A Sandson; K J Bachna; M D Morin
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of learning disabilities     Volume:  33     ISSN:  0022-2194     ISO Abbreviation:  J Learn Disabil     Publication Date:    2000 Jan-Feb
Date Detail:
Created Date:  2004-10-27     Completed Date:  2004-11-09     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0157312     Medline TA:  J Learn Disabil     Country:  United States    
Other Details:
Languages:  eng     Pagination:  83-90     Citation Subset:  IM    
Harvard Medical School, Boston, MA, USA.
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MeSH Terms
Attention Deficit Disorder with Hyperactivity / physiopathology*,  psychology*
Case-Control Studies
Cerebral Cortex / pathology,  physiology*
Diagnostic and Statistical Manual of Mental Disorders
Educational Status
Functional Laterality
Middle Aged
Random Allocation
Space Perception*
Visual Perception

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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