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Título del libro: Reading: Learning, Writing And Disorders
Título del capítulo: Event-related brain potentials during a visual continuous performance task in groups with reading disorder and attentiondeficit/hyperactivity disorder

Autores UNAM:
MA. GUILLERMINA YAÑEZ TELLEZ; JORGE BERNAL HERNANDEZ; ERZSEBET MAROSI HOLCZBERGER; VICENTE GUERRERO JUAREZ; BERTHA PRIETO GOMEZ; MA. DE LOURDES LUVIANO VARGAS;
Autores externos:

Idioma:
Inglés
Año de publicación:
2009
Resumen:

Reading disorder (RD) and attention-deficit/hyperactivity disorder (ADHD) are two of the most common neuropsychological problems of childhood. Recent studies indicate that many children have both RD and ADHD and it has been proposed that both conditions can be causally related. The objective of this study was the event-related brain potentials (ERP) recording of ADHD and RD children (8-12 years old) during continuous performance task (CPT), in order to distinguish whether children with ADHD only and RD only demonstrate common or specific deficits in attention and/or inhibition processes measured both behaviorally and electrophysiologically. CPT included five conditions: Go, No Go, Warning, False Go and Frequent stimuli. Behavioral data showed that there were no between-groups differences in hits nor omission or commission errors, but in reaction times to hits control subjects showed significantly shorter times than the other two groups. The electrophysiological results showed that P300 amplitude was larger for Go than for No Go condition in Control and RD groups, but not in the ADHD group. For No Go condition, control group showed higher P300 amplitudes as compared to RD and ADHD. However, the electrophysiological responses of these later groups were different, since ADHD showed larger amplitudes than RD to No Go and False Go stimuli, while RD displayed greater P300 amplitudes as compared to ADHD in Go and Warning stimuli. It is concluded that ADHD children present deficiencies in both the allocation of attentional resources and in the inhibitory processes, while in RD children the main problem is the scarce amount of attentional resources devoted to information processing. © 2009 Nova Science Publishers, Inc. All rights reserved.


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