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International Journal of Neuroscience Volume 118, 2008 - Issue 1
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TIME REPRODUCTION DISTURBANCES IN ADHD CHILDREN: AN ERP STUDY

A. A. GONZÁLEZ-GARRIDO Instituto de Neurociencias, Universidad de Guadalajara, Guadalajara, México; O.P.D. Hospital Civil de Guadalajara, Guadalajara, México
,
F. R. GÓMEZ-VELÁZQUEZ Instituto de Neurociencias, Universidad de Guadalajara, Guadalajara, México
,
D. ZARABOZO Instituto de Neurociencias, Universidad de Guadalajara, Guadalajara, México
,
R. LÓPEZ-ELIZALDE O.P.D. Hospital Civil de Guadalajara, Guadalajara, México
,
A. ONTIVEROS O.P.D. Hospital Civil de Guadalajara, Guadalajara, México
,
H. MADERA-CARRILLO Instituto de Neurociencias, Universidad de Guadalajara, Guadalajara, México
,
O. L. VEGA Instituto de Neurociencias, Universidad de Guadalajara, Guadalajara, México
,
J.L. OROPEZA DE ALBA O.P.D. Hospital Civil de Guadalajara, Guadalajara, México
&
J.M. DE LA SERNA TUYA Instituto de Neurociencias, Universidad de Guadalajara, Guadalajara, México; Universidad de Sevilla, Seville, Spain
 show all
Pages 119-135 | Received 04 Jul 2006, Published online: 24 Aug 2009
 
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Abstract

Sixteen ADHD children and a control group were asked to reproduce the varying time duration of successively presented visual stimuli. Time estimation was poorer in ADHD children, who showed more impulsive errors. ERPs exhibited similar grand-mean waveforms for both groups during the estimating period, but they were significantly different during the reproducing stage, when an early positive wave over frontal regions characterized the control group, interpreted as memory-guided motor output, followed by a slow negativity probably reflecting an inhibitory motor closure process, both probably involving central executive networks that seem to be improperly activated in ADHD children.

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