ABSTRACT
Objective To explore the characteristics of emotional memory in patients with earlystage Parkinson's disease (PD).Methods The methods of emotional memory neuro-cognitive test and event-related evoked potentials (ERPs) test were set.The emotional memory was detected in 30 early-stage PD patients without treatment (PD group) and 30 matched (including education level,etc) healthy controls (control group),who were recruited in the Department of Neurology,Anqing Municipal Hospital from June 2016 to June 2018.Results Compared with the control group (55.83％±4.17％),the negative valence picture recognition rate in the PD group (50.30％±4.04％) showed statistically significant difference (t=4.85,P＜0.05).The ERPs-P300 latency was (337.47 ± 7.87) ms,the amplitude was (6.34 ± 0.62) μV,and the reaction time was (3 729.21±226.85) ms in the control group,showing statistically significant difference (t=-3.30,4.04,2.76,P＜0.05) compared with that in the PD group ((344.20±7.94) ms,(5.75±0.52) μV,(3 935.33±222.24) ms,respectively).There was no statistically significant difference in positive and neutral stimuli recognition between the two groups (P＞0.05).In the PD group,the correct recognition in positive,neutral and negative valence pictures (57.97％ ±4.44％,49.77％ ±4.49％,50.30％ ±4.04％,respectively)showed statistically significant difference (F=39.17,P＜0.05),also seen in the reaction time ((3 725.87 ±210.10) ms,(4 085.80±231.67) ms and (3 935.33±222.24) ms,respectively;F=9.58,P＜0.05),P300 latency ((328.07±6,07) ms,(347.37±7.49) ms and (344.20±7.94) ms,respectively;F=60.32,P＜0.05),and amplitude ((6.55±0.66) μV,(5.57 ± 0.63) μV and (5.75 ± 0.52) μV,respectively;F=22.44,P＜0.05).But there was no statistically significant difference between negative and neutral stimuli recognition in the PD group (P＞0.05).In the control group,the correct recognition in positive,neutral and negative valence pictures (59.47％ ±4.61％,50.63％±4.96％,55.83％±4.17％,respectively) also showed statistically significant difference (F=25.85,P＜0.05),also seen in the reaction time ((3 657.13±218.85) ms,(4 026.81±221.23) ms and (3 729.21±226.85) ms,respectively;F=8.57,P＜0.05),P300 latency ((326.13±5.96) ms,(345.10±7.95) ms and (337.47±7.87) ms,respectively;F=51.04,P＜0.05),and amplitude ((6.69±0.68) μV,(5.59±0.67) μV and (6.34±0.62)μV,respectively;F=22.15,P＜0.05).There was no statistically significant difference in the rating of valence of emotional pictures between the PD and the control groups (P＞0.05).However,there was statistically significant difference in the latency and amplitude of P300 in the rating of negative valence of emotional pictures between the two groups (t=-5.63,4.16,P＜0.05).Conclusions The results suggest that there is emotional memory impairment in early stage of PD,which is mainly based on selective negative emotional valence.Testing the emotional memory of patients with PD is helpful for early identification and intervention.
ABSTRACT
Objective To investigate the effects of repetitive transcranial magnetic stimulation (rTMS) on cognitive function and safety in patients with lesions in prefrontal cortex (PFC).Methods Twenty-one patients with lesions in PFC hospitalized in the Department of Neurosurgery and Department of Neurology,Anqing Hospital Affiliated to Anhui Medical University between January 2012 and October 2014 were enrolled and given regular drug treatment as a background.Event-related potential (ERP) P300 latency and amplitude,Montreal Cognitive Assessment (MoCA) scores were recorded and compared before and after 4-week rTMS treatment.Results Compared with those before rTMS treatment,P300 latency ((367.38 ± 9.79) ms vs (345.43 ± 11.31) ms;t =5.33,P ＜ 0.05) was significantly shortened,while amplitude ((4.79 ± 1.02) μV vs (7.84 ± 1.40) μV;t =-8.08,P ＜ 0.05),MoCA scores (19.57 ±2.06 vs 23.91 ± 1.30;t =-8.14,P ＜ 0.05),memory test scores (2.19 ± 0.81 vs 4.10 ± 0.89;t =-7.24,P ＜ 0.05) and executive function test scores (2.52 ± 1.08 vs 3.57 ± 0.93;t =-3.38,P ＜0.05) were obviously increased.MoCA scores (18.22 ± 1.56 vs 20.58 ± 1.83;t =-3.11,P ＜ 0.05),memory test scores (1.89 ± 0.78 vs 2.42 ± 0.79;t =-2.26,P ＜ 0.05) and executive function test scores (1.56 ± 0.53 vs 3.25 ± 0.75;t =-5.76,P ＜ 0.05) showed statistically significant difference before rTMS treatment in patients with lesions in either right or left front lobe.Conclusions rTMS which is thought to be a safe procedure can improve cognitive function in patients with lesions in prefrontal cortex.