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Event-related potentials in children with attention-deficit/hyperactivity disorder and excess beta activity in the EEG

Journal Article


Abstract


  • This study investigated whether ERPs from an inter-modal oddball

    task could distinguish between two groups of children with

    Attention-Deficit/Hyperactivity Disorder (AD/HD) of the combined

    type, with and without excess beta in their EEG, and controls.

    Three age-matched groups of male children (20 typical AD/HD

    without excess beta, 20 AD/HD with excess beta, 20 controls)

    were presented with an inter-modal oddball task in which

    a counter-phasing checkerboard was the non-target visual sti -

    mulus (randomly presented on 80% of trials), and a 2000 Hz

    tone was the auditory target (20% of trials). Stimuli were presented

    at a fixed rate (stimulus-onset asynchrony 1.03 s) and

    participants were required to silently count all targets.

    Compared with controls, the AD/HD group without excess beta

    showed reduced P2 and P3 to auditory targets, topographic differences

    in target N1 and N2, and reduced P2 and P3 to visual

    non-targets, replicating previous AD/HD research. The AD/HD

    group with excess beta showed a general reversal of these

    effects in the auditory target N1, P2, N2, and P3, and visual

    non-target N1, P2 and P3, appearing similar to the control

    group. However, their visual non-target P1 was more aberrant

    than that of the other AD/HD group.

    These results suggest that the children with excess beta do not

    demonstrate the impaired discrimination and categorization

    usually noted in children with AD/HD of the combined type.

    Further research on the cognitive and perceptual functioning of

    EEG-defined subgroups of AD/HD is warranted.

Authors


  •   Barry, Robert J.
  •   Clarke, Adam R.
  •   McCarthy, Rory (external author)
  •   Selikowitz, Mark (external author)
  •   Brown, Christopher (external author)

Publication Date


  • 2009

Citation


  • Barry, R. J., Clarke, A. R., McCarthy, R., Selikowitz, M. & Brown, C. R. (2009). Event-related potentials in children with attention-deficit/hyperactivity disorder and excess beta activity in the EEG. Acta Neuropsychologica, 7 (4), 249-263.

Scopus Eid


  • 2-s2.0-78650219523

Ro Metadata Url


  • http://ro.uow.edu.au/hbspapers/2303

Number Of Pages


  • 14

Start Page


  • 249

End Page


  • 263

Volume


  • 7

Issue


  • 4

Place Of Publication


  • http://journals.indexcopernicus.com/karta.php

Abstract


  • This study investigated whether ERPs from an inter-modal oddball

    task could distinguish between two groups of children with

    Attention-Deficit/Hyperactivity Disorder (AD/HD) of the combined

    type, with and without excess beta in their EEG, and controls.

    Three age-matched groups of male children (20 typical AD/HD

    without excess beta, 20 AD/HD with excess beta, 20 controls)

    were presented with an inter-modal oddball task in which

    a counter-phasing checkerboard was the non-target visual sti -

    mulus (randomly presented on 80% of trials), and a 2000 Hz

    tone was the auditory target (20% of trials). Stimuli were presented

    at a fixed rate (stimulus-onset asynchrony 1.03 s) and

    participants were required to silently count all targets.

    Compared with controls, the AD/HD group without excess beta

    showed reduced P2 and P3 to auditory targets, topographic differences

    in target N1 and N2, and reduced P2 and P3 to visual

    non-targets, replicating previous AD/HD research. The AD/HD

    group with excess beta showed a general reversal of these

    effects in the auditory target N1, P2, N2, and P3, and visual

    non-target N1, P2 and P3, appearing similar to the control

    group. However, their visual non-target P1 was more aberrant

    than that of the other AD/HD group.

    These results suggest that the children with excess beta do not

    demonstrate the impaired discrimination and categorization

    usually noted in children with AD/HD of the combined type.

    Further research on the cognitive and perceptual functioning of

    EEG-defined subgroups of AD/HD is warranted.

Authors


  •   Barry, Robert J.
  •   Clarke, Adam R.
  •   McCarthy, Rory (external author)
  •   Selikowitz, Mark (external author)
  •   Brown, Christopher (external author)

Publication Date


  • 2009

Citation


  • Barry, R. J., Clarke, A. R., McCarthy, R., Selikowitz, M. & Brown, C. R. (2009). Event-related potentials in children with attention-deficit/hyperactivity disorder and excess beta activity in the EEG. Acta Neuropsychologica, 7 (4), 249-263.

Scopus Eid


  • 2-s2.0-78650219523

Ro Metadata Url


  • http://ro.uow.edu.au/hbspapers/2303

Number Of Pages


  • 14

Start Page


  • 249

End Page


  • 263

Volume


  • 7

Issue


  • 4

Place Of Publication


  • http://journals.indexcopernicus.com/karta.php