ABSTRACT
La inhibición perceptual es el proceso encargado de suprimir la interferencia de distractores externos. A pesar del rol central que juega la inhibición en dominios heterogéneos (como la salud mental, las habilidades académicas, o el desarrollo), la investigación en la temática muestra una comprensión limitada del desarrollo de este proceso, que además ha focalizado su estudio en contextos neutrales. Por ello, el objetivo del estudio fue analizar el desarrollo de la inhibición perceptual en contextos emocionales y neutrales en población infantil. Participaron del estudio 407 niños/as de 8 a 12 años, que fueron evaluados con una tarea informatizada basada en el paradigma de flancos y del distractor enteramente irrelevante. Los resultados mostraron que este proceso se desarrolla de manera progresiva y gradual, sin diferencias en función del contexto o dominio de aplicación. De este modo, permiten extender los resultados hallados principalmente en contextos neutrales, al contexto emocional. Este estudio constituye un aporte a la comprensión del desarrollo de este proceso inhibitorio, en ambos contextos (emocionales y neutrales)
Perceptual inhibition is the process responsible for suppressing the interference generated by external distractors. Despite the fact that inhibition plays a central role in heterogeneous domains (such as mental health, well-being, academic skills, and even development), research shows a limited understanding of the development of this process and has also focused mostly on neutral contexts. For this reason, this work aims to analyze the development of perceptual inhibition in emotional and neutral contexts in children. To this end, 407 children aged 8 to 12 years participated in the study. They were evaluated with a computerized task based on the flanker paradigm and the entirely irrelevant distractor paradigm. The results showed that perceptual inhibition develops gradually, and shows no differences depending on the context or domain. These findings allow the extension of previous results found in neutral contexts to the emotional context. This study constitutes a contribution to the understanding of development of this inhibitory process in both contexts (emotional and neutral)
Subject(s)
Humans , Child , Inhibition, Psychological , Behavior Control , EmotionsABSTRACT
Objective To investigate the change of the error positivity(Pe)of event-related poten-tial(ERP)under Flanker task in adolescents with smoking addiction. Method The signals of ERP during the Flanker task in fifteen adolescents with smoking addiction were compared with that of 15 non-smoking ad-olescents. Results The Pe amplitude in adolescents with smoking addiction((3.575±2.299)μV)was sig-nificantly lower than that of non-smokers((5.865 ± 4.290)μV)(F=5.324,P=0.029),and the reaction time of the Flanker task in smoking addiction adolescent group((440.754± 36.051)ms)was significantly higher than that in the control group((422.850±20.194)ms)(F=0.620,P<0.05).The Pe amplitude in ado-lescents with smoking addiction was positively correlated with smoking index(pack-years)(r=0.599,P=0.018). Conclusion The adolescents with smoking addiction may exit worse ability of error monitoring dur-ing the Flanker task.
ABSTRACT
ObjectiveTo investigate response monitoring function in individuals with pathological internet use(PIU) using the modified Eriksen flanker task by event-related potentials(ERPs).Methods23 individuals met Young's diagnostic questionnaire (YDQ) criteria for PIU were enrolled as research group and 23 sexual-and age matched healthy persons enrolled as control group.EEG was recorded during participants performed the modified Erikson flanker task.Reactive time (RT) and error rates were compared between two groups. BESA 5.2.0was used to perform data analysisand theerror-related negativity(ERN)amnplitudeswereanalyzed.Results False alarm rate of PIU group was higher than that of control group.A repeated measure ANOVA revealed a significant group,frontal electrode sites and group × frontal electrode sites main effect for ERN amplitudes ( for group:F =768,df=1,P =0.000 ; for frontal electrode sites:F =615,df=2,P =0.000 ; for group × frontal electrode sites:F =516,df=2,P=0.000),and a significant group,central electrode sites and group × central electrode sites main effect for ERN amplitudes ( for group:F=768,df=1,P =0.000 ; for central electrode sites:F =599,df=2,P =0.000 ; for group × central electrode sites:F =483,df=2,P =0.000).ERN amplitudes of PIU group were lower than those at control group.ConclusionIndividuals with PIU present response monitoring dysfunctions and share neuropsychological and ERPs characteristics of compulsive-impulsive spectrum disorder,which supports that PIU is an impulse disorder or at least related to impulse control disorder.