Abstract:
:As neuropsychological mechanisms for attention have been hypothesized to be located in the right hemisphere of the brain, several investigators have begun to conceptualize attention deficit hyperactivity disorder (ADHD)-related attentional deficits as involving right-hemispheric abnormalities. The authors evaluated and compared adult patients diagnosed with ADHD with a non-ADHD group of patients using a chronometric visual-spatial attention task that is sensitive to hemispheric differences in efficiency of information processing. Reaction times across different cuing conditions, cue-target delays, and visual fields were assessed. When participants' attention was misdirected with cues in the right visual field and attention had to be switched to a target on the left visual field, there was a longer delay among ADHD adults than non-ADHD adults, specifically when the interval between the cue and target was 800 ms as compared with 100 ms. This specific pattern of dysfunction was interpreted as a difficulty with maintaining attention possibly associated with anterior attention mechanisms in the right hemisphere.
journal_name
Neuropsychologyjournal_title
Neuropsychologyauthors
Epstein JN,Conners CK,Erhardt D,March JS,Swanson JMdoi
10.1037/0894-4105.11.4.467subject
Has Abstractpub_date
1997-10-01 00:00:00pages
467-473issue
4eissn
0894-4105issn
1931-1559pii
1997-05070-001journal_volume
11pub_type
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