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ObjectiveTo explore the change of the event related potential brain topographic map on depression' mental rotation,and to perfect the brain function relation map for depression in space ability.Methods 32 depression and 29 normal healthy people were tested to make mental rotation tasks in the brain ERP system.The distribution of the changing brain topographic map were observed.Results ( 1 ) Compared with the control group ( error rate ( 29±9 ) ％,response time ( 604.74 ± 54.39 ) ms,the error rate was significantly higher and response time was significantly longer in depression (error rate( 33 ± 15 )％,response time(755.22 ± 70.18 )ms,P＜0.05).(2) Compared with the control group (N100:PZ( -3.78 ± 1.05)μV,CZ( -5.67 ±2.21)μV,P3( -2.34 ±0.59) μV,P4( -2.92 ±0.80) μV ;P500:PZ(7.35 ±2.61 ) μV,CZ(7.65 ± 2.42) μV,P3 (6.53 ±2.11 ) μV,P4 ( 7.29 ± 2.57 ) μV ),the total volatility was significantly lower in depression ( N 100:PZ ( - 0.31 ±0.09)μV,CZ( -2.27 ±0.57)μV,P3( -0.30 ±0.07) μV,P4( -0.33 ±0.08) μV;P500:PZ(6.04 ±2.16)μV,CZ ( 5.92 ± 2.01 ) μV,P3 ( 6.02 ± 2.11 ) μV,P4 (6.01 ± 2.34 ) μV,P ＜ 0.05 ) and the excitability difference of the left and right parietal-occipital lobe was disappeared (P＞0.05) ; Compared with the control group,in N100 the normal and mirror excitability was significantly lower,and in P500 the normal excitability was significantly lower,but mirror was significantly higher in depression (P ＜ 0.05 ).Compared with the left and right brain,the normal excitability in the right parietal-occipital lobe was significant higher (P ＜ 0.05 ),but the mirror excitement difference was disappeared in depression (P＞ 0.05 ),and the normal and mirror excitement in the right parietal-occipital lobe was both significantly higher in normal healthy people (P ＜ 0.05 ).ConclusionDepressed patients; mental rotation ability is impaired.And the negative potential for looking forward to reaction is lower and exist the right advantage hemisphere brain in normal,but mirror advantage hemisphere disappears in depressed patients.This study suggests the brain topographic map of mental rotation ability damaged can be used as the clinical auxiliary diagnosis index.
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Objective To explore the brain electrophysiological mechanism of object rotation in first-episode schizophrenia.Methods 30 patients with schizophrenia and 28 normal healthy people,who were from the Center for Mental Disease Control and Prevention,Third Hospital of PLA,took part in the mental rotation tasks,then the incubation period and amplitude of P500,and the wrong number and reaction time were measured.Results Compared with control group ( normal:(494.16 ± 34.68 ) ms,( 9.56 ± 2.54) μV; mirror:(496.51 ± 33.10 ) ms,(6.38 ± 2.41 ) μV),schizophrenia' incubation periods were significantly delayed ( normal:( 571.30 ± 51.21 ) ms;mirror:(573.41 ±39.27) ms) and volatility were significantly lower ( normal:(4.26 ± 1.01 ) μV; mirror:(3.61± 1.21 )μV) in normal and mirror rotation (P＜0.05 ).The mirror-normal differences were not significant on the incubation periods of two groups (P ＞ 0.05 ) ; the mirror-normal image differences were not significant on the patient group' volatility (P ＞ 0.05 ) ; the normal volatility was significantly higher than mirror in the control group (P ＜ 0.05).Conclusion Schizophrenia'mental rotation ability is impaired,and mirror-normal differences on mental rotation are disappeared.It can be used as an early-stage clinical auxiliary diagnosis index.
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Objective:To explore the 5-HT mechanism of stress . Methods:The method of polymerase chain reaction (PCR) was used to detect the presence of 5-HT receptor subtypes in the hippocampus,hypothalamic and midbrain of the rat after 30days of movement restrict compared with normal cage control groups (CC) . The specific oligonucleotide primers were synthesized based on the complementary DNA sequence for each of the rat 5-HT 1A and 5-HT 2A receptor subtypes . Results : The expression of 5-HT 1A receptor subtypes in each regions of the rat brain after movement restrict were signifcantly lower than that of the CC groups, and the expression of 5-HT 2A receptor subtype were signifcantly higher( P
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Objective: To explore the brain levels of nitric oxide (NO) and nitric oxide synthase(NOS) in rats after sleep deprivation. Methods: NO levels and NOS activity were assayed in different brain regions of Sprague-Dawley rats after sleep deprivation by flower pot compare with normal group (CC) and tank control groups (TC). Results: NO levels and NOS activity were increased in front cortex and hippocampus after SD compared with CC and TC (P
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Objective: To investigate the influence of live ammunition maneuver on mental health of soldiers in mobile troop. Method: 428 soldiers in mobile troop participating live ammunition maneuver on plateau were included. 198 soldiers in another troop garrisoned on plateau were collected as control. SCL-90, EPQ and SSRS (social support rating scale) were applied to soldiers in mobile troop before and after ammunition, and also to controls. Results: After ammunition, numbers of positive items and all 9 subscores of SCL-90 increased than before (P
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Objective: To investigate the effects of paradoxical sleep deprivation (SD) on serum cytokine levels of Sprague-Dawley rats Method:Paradoxical sleep deprivation was induced in male rats by housing them on small platforms over water Controls were housed either in normal cages (CC) or in tanks with large platforms (TC) After SD for different lengths of time, serum levels of IL-2, 6, 8, TNF-? and cortisol of all groups were measured by double antibodies radio-immune assay Results: Serum level of TNF-? and cortisol of SD24h group were higher than that of CC (P
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Objective: To study the effect of psychological intervention on mental health of sentries in remote post Method:128 sentries in remote post were assessed with SCL-90 and EPQ Psychological intervention included health education focus on mental health and individual psychological help After 6 months, they were assessed with SCL-90 again to evaluate the outcome of intervention Results:Before intervention, the score of SCL-90 and N, P scores of EPQ were higher than military norm, while E score was lower than military norm (P