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La atención y el sacádico: Efectos clínicos en el Trastorno por Déficit de Atención con Hiperactividad (TDAH) [Attention and saccadic: Clinical effects in Attention Deficit and Hyperactivity Disorder (ADHD)]

Trinidad García, Celestino Rodríguez, Paloma González-Castro, Luis Álvarez y Marisol Cueli

Abstract

Attention Deficit and Hyperactivity Disorder (ADHD) is a prevalent childhood disorder, which is associated to response inhibition deficits. The main aim of this study is to analyze the eye saccadic movements as a measure of inhibitory control in ADHD, using Fixation and Antisaccade tasks. 4 children and adolescents took part in the study (2 ADHD and 2 controls), aged 7 and 16. Eye movements’ assessment was completed by the administration of response inhibition and attention deficit measures. Main results indicated: a) ADHD group showed a significant higher number of mistakes in saccadic tasks (intrusive saccadic in the Fixation task and direction mistakes in the Antisaccade task); b) the 16 years old participant with ADHD showed less mistakes than the 7 years old children. Additionally, and in contrast to this second participant, he was able to correct practically all of them; c) high coherence between saccadic tasks and response inhibition and attention deficit was found, where high levels of saccadic movements´ mistakes were related to low attention and high impulsivity levels. These results highlight about the validity and usefulness of the saccadic eye movements as a measure of the inhibitory deficit in ADHD.

Keywords: saccadic eye movements; ADHD; fixation; antisaccadic, inhibitory deficit.

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