Objective:To investigate the effect of methylphenidate on the ERP waveform of children with attention deficit hyperactivity disorder(ADHD) between responders and non-responders and it's psychological significance.Methods:ERP elicited by the continuous performance test were recorded before and under methylphenidate treatment in 28 ADHD children and their behavioral performance were collected simultaneously.Based on the behavioral results,the patients were divided into two groups:responders and non-responders.Results:After medcation,the responders' behavioral performance were significantly better,amplitude of NOGO-P3(30.24?10.78?v) were also larger than that of before treatment(20.34?11.42?v,P=0.04);No significant differences were found in the behavioral performance and NOGO-P3 amplitude before and after treatment(23.51?11.97?v/25.88?13.96?v,P=0.61) in the non-responders group.The amplitude of NOGO-N2 of the two groups did not have significant difference before and under methylphenidate treatment.Off medication,there were no differences between responders and non-responders.Conclusion:Methylphenidate can improve the ability of response inhibition in responders as well as increase the amplitude of NOGO-P3 of them.

Objective To examine the curative effect of EEG biofeedback therapy on children with attention deficit hyperactivity disorder (ADHD),and to investigate the neural mechanism underlying the executive function in children with ADHD.Methods 42 children with ADHD participated a Go/Nogo task before and after the EEG biofeedback therapy which was consisted of 20 times of treatments.The curative effect was evaluated using the behavioral and electrophysiological indexes associated with the Go/Nogo processing in the experiment.Results Commission error significantly decreased after the therapy ( (2.95 ±2.22 ) vs (4.65 ±4.47),P＜0.05 ).Latencies of P2 ( (210.00 ± 27.54) ms vs ( 228.27 ± 34.17 ) ms) and N2 components ( ( 310.59 ± 45.82) ms vs (328.00 ± 42.27)ms) elicited by Go trials significantly exhibited shorter at the end of therapy.Additionally,the amplitude of N2 component elicited by Nogo trials exhibited significantly decreased after therapy ((0.23 ±3.79)μV vs (-1.84 ± 4.23 ) μV,P ＜ 0.05).Conclusion The EEG biofeedback therapy is effective in debasing the hyperactivity/impulsive behaviors and improving the ability of target detection,which may be beneficial to the attention ability and conflict detecting in children with ADHD.EEG biofeedback is an effective treatment to ADHD.

Objective To investigate the curative effect of biofeedback treatment on attention-deficit/hyperactivity disorder ( ADHD ) patients using integrated visual and auditory continuous performance test ( IVA-CPT).Methods 23 ADHD patients undertaked 20 times of EEG biofeedback treatment using VBFB-3000A facility.Their executive and attention quotients were measured before and after treatment by IVA-CPT.Results The pre-therapy full scale of response control and attention quotients of ADHD were 58.26 ± 32.9 and 54.43 ±34.01 respectively.After the therapy, all the quotients got improved (response control 99.3 ± 12.6, attention 84.1 ± 15.9 ) except for stamina and speed quotients both in visual and in auditory.Conclusion Shortterm EEG biofeedback treatment is one of effective methods for ADHD patients,especially for hyperactive cases.

Objective To investigate behavior and electrophysiological manifestations of sustained attention and executive function in School-age children with tic disorder(TD).Methods Sixty-six school-aged children (36 TD and 30 control) participated in a CPT-AX task.Behavioral measures and ERP measures were collected.Results The 1.The Behavior results:there were no significant differences between the TD group and the control group in hitting number ((38.07 ± 3.04),(38.93 ± 1.48)),reaction time ((465.427 ± 97.00) ms,(500.17 ± 131.29) ms),the number of errors of omission((1.97 ± 3.02),(1.07 ± 1.48)) and the number of false errors ((1.77 ± 2.50),(1.07 ± 1.53)) (P ＞ 0.05).2.The ERP results:①Group and condition had significant main effect and interaction effect on N2 amplitude (P ＜ 0.05),while not on the latency of N2 (P ＞ 0.05).②Group had significant main effect on the amplitude and latency of P3,but main effect of Group and the interaction effect are not significant (P ＞ 0.05).③The TD group's amplitude of Nogo-N2 ((-1.39 ± 3.321) μV) were smaller than that of the control group ((-4.09 ± 2.94) μV) (P ＜ 0.05).Conclusion Children with TD performance impaired conflict monitor,while exhibit no deficits in sustained attention and response inhibition.

Objective To investigate the risk factors which indicate behavior problems and degree of conflict function defects in different subtypes of attention deficit hyperactivity disorder( ADHD),and to compare behavioral problems,family environment and conflict function in children with and without ADHD.Methods 87children with ADHD and 38 matched controls performed Simon-Stroop task while questionnaires (Parent Symptom Questionnaire and Family environment Scale)were acquired from their parents.Results Questionnaire indicated that children with ADHD-combined(ADHD-C) had the highest score of conduct problem( 1.05 ± 0.44),learning problem ( 1.97 ± 0.52 ),hyperactivity-impulsion ( 1.56 ± 0.60) and hyperactivity index ( 1.45 ± 0.40 ) than ADHDⅠ(0.65±0.32,1.58 ±0.58,1.06 ±0.46,1.01 ±0.31) and matched controls ( 0.42 ±0.24,0.77 ±0.49,0.58±0.40,0.55 ±0.34) in PSQ.ADHD-Ⅰ and ADHD-C had higher score of contradiction(3.28 ± 1.70,4.61 ±2.56 ) and lower score of family cohesion (6.75 ± 2.27,6.61 ± 2.03 ),emotional expression (5.03 ± 1.54,5.06 ±1.91 ),knowledge (3.83 ± 2.30,3.61 ± 1.81 ) and entertainment (3.70 ± 2.12,3.47 ± 2.32 ) than matched controls (2.36 ± 1.44,8.06 ± 1.71,6.03 ± 1.54,4.86 ± 1.91,4.83 ± 2.29) in FES-CV.Behavior data indicated that the correct rate of children with ADHD-Ⅰ and ADHD-C in Simon-incongruent trials( Siin:0.76 ± 0.13,0.69 ±0.13 ) and Stroop-inconsistent trials( Stin:0.82 ± 0.10,0.78 ± 0.08 )were lower and reaction time of children with ADHD-Ⅰ and ADHD-C in the Siin ( (876.4 ± 97.34) ms,( 893.8 ± 130.1 ) ms) and Stin ( ( 864.4 ± 91.82 ) ms,(860.2 ± 125.0) ms) were longer than matched controls ( (Siin (0.81 ± 0.11 ) ms,(810.4 ± 136.1 ) ms; Stin (0.87 ± 0.08 ) ms,(797.4 ± 136.1 ) ms).Pearson correlation analysis suggested that some factors in the FES-CV had correlation with behavioral problems.Conclusion This finding indicates that poor family environment is the risk factor that indicate behavioral problems in children with ADHD and behavioral problems,conflict function defeet of ADHD-C are more serious than ADHD-Ⅰ and matched controls.

ObjectiveTo explore the relationship between chronic kidney disease (CKD) and cerebral small vessel disease (SVD) in elderly patients. MethodsOne hundred and fifty-two elderly male CKD patients for experimental group and 158 elderly male for control group were recruited. Demographic data and vascular risk factors were recorded. White matter lesion (WML) was semi-quantitatively assessed by cerebral magnetic resonance imaging (MRI), and lacunar infarction (LI) was also calculated. Results(1) The prevalenees of hypertentsion and diabetes mellitus were higher in elderly CKD patients than those in control group (30. 9% vs. 19.0%, 23.7%vs. 14.6%;both P～0. 05). (2) The percentages of grade 2 and grade 3 WMLs were higher in elderly CKD patients than those in control group (34.9% vs. 24.1%, 25.7% vs. 16.5%;both P<0.05). Prevalence of LI was higher in elderly CKD patients than that in control group (45.4% vs.25.3% ,X2= 13. 70, P<0. 05). The similar Resultswere also obtained except for control subjects with hypertension and diabetes mellitus. (3) The logistic regression analysis showed that age, hypertension and low glomerular filtration rate (GFR) were closely associated with SVD in elderly CKD patients. ConclusionsHypertention and diabetes mellitus are risk factors for CKD in elderly patients. SVD is associated with CKD, and age, hypertension and low GFR may be risk factors for SVD in elderly CKD patients.

Objective The present study aimed to trace the behavior results and event-related potential (ERP) of conflict monitoring from 7 ～ 12 years old to explore the development features of the conflict monitoring.Methods In six groups of 144 children aged from 7 to 12,behavior and non-target N2 amplitude were analyzed in continuous performance test (CPT) task. Results 1. Behavior results:the reaction time of target stimulus decreased ( ( 533.33 ± 66.65 ) ms, (523.91 ± 92.96 ) ms, (468.37 ± 64. 13 ) ms, ( 46 1.48 ± 98.31 ) ms, (457.57 ±84.05 ) ms, (405.02 ± 67.90) ms) and the hitting number increased ( ( 34.87 ± 4.84 ), ( 37.64 ± 3.54 ), ( 37.95± 2.92 ), (38.67 ± 1.23 ), (39.31 ± 1.08 ), ( 39.45 ± 1.00 ) ) as age increased, and the difference was statistically significant ( P＜0.01 ). 2. ERP: ①The non-target N2 amplitude was significantly higher than the target,and the difference was statistically significant (F= 98.57, P＜ 0.01 ). ②The amplitude of non-target N2 amplitude decreased with age, and the difference was statistically significant (F= 5.54, P＜ 0. 01 ). Conclusion The non-target N2 was closely related to the monitoring conflict, and the behavior and ERP results in this study showed the development trend. 8 ～ l0 and 12 years old are the critical development period of information processing speed, attention and conflict monitoring function for children.

ObjectiveTo explore the particular inner world of the children with attention deficit hyperactivity disorder (ADHD)with the sandplay therapy and the initial sandtray's clinical diagnosis role and value on the ADHD.MethodsThe differences of the initial sandtrays between 28 children with ADHD and 24 normal children were compared.Results 1.On the use of toys,the experimental group was significantly higher in transports ((5.04 ±6.60),(1.38 ±2.12),t=2.73) and lower in stones((0.00 ±0.00),(8.00 ± 12.33),t=-3.18).2.On the scene of sandtrays,the experimental group was significantly higher in the fight( x2 =12.96,P ＜ 0.01 ),dynamic scenes ( x2 =13.37,P ＜ 0.01 ).3.On the use of self-images,the experimental group was lower than the normal children,and the differences were significant ( x2 =4.75,P ＜ 0.05 ).4.There were no significant differences in the use of sand between two groups( x2 =3.46,P ＞ 0.05).ConclusionThe results show that the children with ADHD have significantly characteristics in sandtrays.Initial sandtray is valuable to be an aid to clinical diagnosis and intervention means.

Objective To investigate cross-cultural differences in picture recognition memory of medical students. Methods Picture recognition memory were assessed by the classic new-old picture recognition,and behavioral results were recorded during the test. Results For new medical picture recognition, mean accuracy of Chinese medical students( 83.21 ± 8.95 )% was considerably higher than that of Indian medical students( 75.56 ±12.63)% (P＜0.05), while for old medical picture recognition, reaction time (RT) of Chinese medical students ( ( 887.57 ± 104.07 ) ms ) was longer than that of Indian medical students ( ( 840.93 ± 1 22.48 ) ms) (P＜0.05).Three way ANOVA suggested that cultural background and picture type significantly affected accuracy and RT,learning experience affected RT. In addition to picture type and learning experience, the interaction of each factors is not remarkable. Conclusion Cultural background, professional background and learning experiences have affected recognition memory. Medical students of different cultural background adopted difference strategies in picture recognition memory.

Objective To compare the event-related potential(ERP) difference waveforms between attention deficit hyperactivity disorder (ADHD) children and normal children in the conflict task,and to investigate the neural mechanism of conflict monitoring of ADHD. Methods ERPs elicited by performing the spatial SimonStroop task were recorded in 32 children with ADHD and 32 normal children. The differences of ERP and behavior dren with ADHD(0.80±0. 11 ,0.87 ±0.08) were less than normal children (0.88 ±0.07,0.93 ±0. 04)in Sireaction time of ADHD group( (773.03 ±99.34)ms) in the Siin were longer than the control group( (737.21 ±81.40)ms) ,the differences had statistic significance (P＜0. 05). 2. ERP results:the amplitude of N2 of the children with ADHD in the four conditions were smaller than the control group, the difference in Siin had statistic sigof prefrontal and anterior cingulate cortex of ADHD were weaker than the control group. Conclusions The results suggest that, due to the inadequate allocation of attention resources of the children with ADHD, they have conflict monitoring function defects compare with normal children. The function defects of conflict information processing related brain areas may be the main neural mechanism. The result of the behavior and ERP can become the reference indicator for the early diagnosis and treatment of ADHD.