Objective To investigate the brain activation at the Stroop task in a group of adolescents diagnosed as the internet gaming disorder (IGD).Methods 10 IGD adolescents and 10 adolescent recreational internet game users (RGU) completed a functional magnetic resonance imaging (fMRI) Stroop task.The response time and accuracy of the two groups and the whole brain activation were measured.The differences between the two groups in response time and accuracy were assessed by t test,and the fMRI data was analyzed by SPM8.Results (1) Compared with the RGU group,the response time in congruent (CC) stimulus was longer ((707.7± 56.1) ms vs.(632.1 ± 83.5) ms;t=2.38,P=0.031) and the accuracy to incongruent (IC) stimulus was less((60.2± 17.5)％ vs.(79.0± 19.5)％;t=-2.27,P=0.034) in IGD group;(2) During IC stimulus,compared to RGU group,the neural activation in IGD group significantly decreased in the bilateral cerebellum posterior lobe,left superior temporal gyrus,left prefrontal lobe,left thalamus,left precentral gyrus,left middle frontal gyrus and the right cingulate gyrus (Peak value=-4.11--5.13,P＜0.05,AlphaSim corrected).And the IGD group showed less activation during the CC stimulus in right cerebellum anterior lobe,right superior temporal gyrus,right prefrontal lobe and left insula (Peak value=-3.84--4.72,P＜0.05,AlphaSim corrected).During the Stroop effect (IC-CC),IGD group showed significantly less activation in left precentral gyrus,left precuneus lobe,and left paracentral lobule (Peak value=-3.94,-5.49,P＜0.05,AlphaSim corrected).Conclusion IGD adolescents have poor Stroop performance in response time and accurate rate,which might be correlated to the abnormal activation of their dysfunctional brain regions,such as the frontal lobe,cingulate cortex,temporal lobe,thalamus,precuneus,and the cerebellum.

Objective To investigate the brain activation at the Stroop task in a group of adolescents diagnosed as the internet gaming disorder (IGD).Methods 10 IGD adolescents and 10 adolescent recreational internet game users (RGU) completed a functional magnetic resonance imaging (fMRI) Stroop task.The response time and accuracy of the two groups and the whole brain activation were measured.The differences between the two groups in response time and accuracy were assessed by t test,and the fMRI data was analyzed by SPM8.Results (1) Compared with the RGU group,the response time in congruent (CC) stimulus was longer ((707.7± 56.1) ms vs.(632.1 ± 83.5) ms;t=2.38,P=0.031) and the accuracy to incongruent (IC) stimulus was less((60.2± 17.5)％ vs.(79.0± 19.5)％;t=-2.27,P=0.034) in IGD group;(2) During IC stimulus,compared to RGU group,the neural activation in IGD group significantly decreased in the bilateral cerebellum posterior lobe,left superior temporal gyrus,left prefrontal lobe,left thalamus,left precentral gyrus,left middle frontal gyrus and the right cingulate gyrus (Peak value=-4.11--5.13,P＜0.05,AlphaSim corrected).And the IGD group showed less activation during the CC stimulus in right cerebellum anterior lobe,right superior temporal gyrus,right prefrontal lobe and left insula (Peak value=-3.84--4.72,P＜0.05,AlphaSim corrected).During the Stroop effect (IC-CC),IGD group showed significantly less activation in left precentral gyrus,left precuneus lobe,and left paracentral lobule (Peak value=-3.94,-5.49,P＜0.05,AlphaSim corrected).Conclusion IGD adolescents have poor Stroop performance in response time and accurate rate,which might be correlated to the abnormal activation of their dysfunctional brain regions,such as the frontal lobe,cingulate cortex,temporal lobe,thalamus,precuneus,and the cerebellum.