Motor preparation, motor execution, attention, and executive functions in attention deficit/hyperactivity disorder (ADHD)

Klimkeit, EI, Mattingley, JB, Sheppard, DM, Lee, P and Bradshaw, JL (2005) Motor preparation, motor execution, attention, and executive functions in attention deficit/hyperactivity disorder (ADHD). Child Neuropsychology, 11 2: 153-173. doi:10.1080/092970790911298


Author Klimkeit, EI
Mattingley, JB
Sheppard, DM
Lee, P
Bradshaw, JL
Title Motor preparation, motor execution, attention, and executive functions in attention deficit/hyperactivity disorder (ADHD)
Journal name Child Neuropsychology   Check publisher's open access policy
ISSN 0929-7049
Publication date 2005-01-01
Sub-type Article (original research)
DOI 10.1080/092970790911298
Volume 11
Issue 2
Start page 153
End page 173
Total pages 21
Place of publication Philadelphia
Publisher Taylor & Francis Inc
Language eng
Abstract Attention and executive functions were investigated in medicated and unmedicated children with ADHD combined type using a novel selective reaching task. This task involved responding as rapidly as possible to a target while at times having to ignore a distractor. Results indicated that unmedicated children with ADHD showed slow and inaccurate responding. Slow responding reflected problems at the stage of movement preparation but not movement execution. An attentional impairment, rather than a motor planning problem per se, appeared to underlie the slow movement preparation. Inaccurate responding reflected problems with response inhibition and selective attention, impulsivity, set- shifting, and difficulties in maintaining vigilance. Although medicated children with ADHD did not show slow movement preparation, they did show some response inaccuracy, resulting especially from impulsive responding. These findings suggest that ADHD is characterized by slow motor preparation ( but not motor execution), and deficits in selective attention, vigilance, and executive functions. Preliminary results suggest that stimulant medication may resolve some of these motor, attentional and executive function deficits.
Keyword Clinical Neurology
ADHD
executive function
selective attention
vigilance
motor preparation
neuropsychological profiles
Deficit-hyperactivity Disorder
Magnetic-resonance
Neuropsychological Profiles
Tourette Syndrome
Prepubertal Boys
Corpus-callosum
Children
Adolescents
Paradigm
Mri
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Queensland Brain Institute Publications
 
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Created: Wed, 17 Oct 2007, 23:36:03 EST