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2007, Number 5

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Gac Med Mex 2007; 143 (5)

Análisis cuantitativo del electroencefalograma para confirmar trastorno funcional frontal en niños con trastorno por déficit de atención con hiperactividad

Madera-Carrillo H, González-Garrido AA, Gómez-Velázquez FR, Zarabozo Enríquez-de Rivera D

Language: Spanish
References: 44
Page: 391-400
PDF size: 267.02 Kb.


ABSTRACT

Backgroud: The Attention Deficit Disorder with Hyperactivity (ADDH) Barkley model predicts concomitant deficits in working memory and in the development of a sense of time as a consequence of poor behavioral inhibition.
Objective: To evaluate electrophysiologically Barkley´s theory (1997).
Subjects and methods: We studied the electroencephalogram (EEG) of fifteen right-handed, normal limit IQ ADDH children (inattentive subtype), aged 7-11 years, and a control group. Subjects were studied at rest, with the eyes open (RO) while performing a time estimation task (ET). Forty-two data matrices were analyzed in three conditions: RO, ET and ET-RO, to assess broad-band spectral parameters; the anteriority, temporal-referenced and laterality quotients (Aq, Aqt and Lq, respectively); and the theta/alpha and theta/beta ratios.
Results: Analyses of variance revealed significant differences for ES-RA, in absolute (Aq & Aqt) and relative powers (Aq). Discriminant function analysis was able to predict group membership with an accuracy over 80%, but it decreased slightly when the leave-oneout method was applied. Linear discrimination based on right hemisphere Aqt values showed the highest discrimination accuracy.
Conclusions: These results support Barkley’s theory, suggesting further evaluation of the temporal-referenced anteriority quotient as a promising electrophysiological tool for the diagnosis and follow up of ADDH children.


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