Response Execution And Response Of Adhd Children. Conditioning Ability Of The Inhibitory Effect Of Eye Movement Research

Activation state is defined as the tonic readiness for the coming up motor actions, which affects the performance of children. A few studies suggest the primary problem of ADHD is a deficit of the ability of state regulation, a kind of ability to regulate ones own behavioral state according to task and condition, rather than a deficit of inhibition ability, which just belong to a basic deficit. As an advanced deficit, the ability of state regulation could affect behavioral performance. The current study focused explore the effect on response execution and response inhibition with ADHD children, and if there is ability deficit of response execution, response inhibition and state regulation.All experiments in our study affect activation state of children by manipulating the presentation rate of stimuli, performance difference on variety state affect the ability of state regulation. The current study involved two levels of stimulus presentation rate: medium rate (4second inter-trial interval, ITI) may induce normal state, fast rate (1second ITI) may induce overactivation. In experiment1, the participants performance in a saccade task combined pro-saccade and anti-saccade in two presentation rate (medium, fast). Saccade latency and saccade direction error rate are employed to assess the ability of response execution and response inhibition. In experiment2, cues are added to control attention on the basis of experiment1, for the purpose of observing if the pattern of effect of state regulation on response execution and response inhibition will change after cues join. A spatial priming paradigm originally developed by Posner is employed to exam the effect pattern in terms of endogenous cue and exogenous cue in experiment2. Saccade latency and anticipate saccade rate are used respectively assess response execution and response inhibition.The main conclusions of the study:(1) There was a deficit of response inhibition in ADHD children, and barely a deficit of response execution compared to normal children.(2)The response execution of ADHD children was hardly dependent on the ability of state regulation, the effect pattern changed when invalid endogenous cues joined the experiment; the response inhibition of ADHD children was strongly dependent on the ability of state regulation, the effect pattern changed when the cue (including valid and invalid cue)) joined in the experiment;(3)the two kind cues (endogenous and exogenous) produce different effect between state regulation and response execution, the effect model changed when the invalid endogenous cue were added to the experiment, and the effect did not change when the exogenous cue were added to.(4)ADHD children suffered from state regulation disability compared to normal children.