Objective:This study aims to explore whether there are specific behavioral deficits of response inhibition and emotional processing in patients with checking obsessive-compulsive disorder (OCD) and those with washing OCD.Methods:A cross-sectional study was conducted from January 2020 to December 2022, collecting clinical data from 75 OCD patients at the outpatient psychological consultation clinic of Xiangya Second Hospital and the clinical psychology department of Hunan Brain Hospital. The sample included 40 OCD patients with checking type (checking group, 24 males, 16 females, aged 14-34 years, mean age 22.1±5.0 years) and 35 OCD patients with washing type (washing group, 12 males, 23 females, aged 14-41 years, mean age 22.6±6.7 years). An age-matched healthy control group (control group) of 80 individuals (HCs, 37 males and 43 females, aged 14-25 years, mean age 20.8±1.9 years) was also recruited. All participants completed the Go/No-go task and Hariri task with behavioral data recorded. The Dimensional Yale-Brown Obsessive-Compulsive Scale was used to assess the severity of OCD symptoms. The Center for Epidemiologic Studies Depression Scale (CES-D) and State Anxiety Inventory (STAI) were used to assess the severity of depression and anxiety. A 3 (group: checking OCD, washing OCD and HC)×2 (task type: Go vs. No-go/Shape vs. Face) repeated-measures ANOVA was conducted to compare the behavioral performance across tasks.Results:Compared with HC group, both checking OCD group and washing OCD group had significantly higher scores in depression and anxiety ( F=85.43, 32.33,both P<0.05). When performing Go/No-go task, a significant group×task interaction effect was observed ( F3(2, 152)=3.23, P3=0.042, partialη32=0.04). In the checking OCD group, No-go accuracy was significantly lower than Go accuracy (accuracy=0.821 vs. 0.893, P<0.001); the checking OCD had significantly lower accuracy than HC in the No-go task (accuracy=0.821 vs. 0.876, P=0.005); there were no significant group differences between the washing OCD and HC in the No-go task ( P>0.05). When performing Hariri task, a significant group×task interaction effect was found ( F3(2, 152)=4.91, P3=0.009, partial η32=0.06). The washing OCD group showed significantly lower accuracy in matching emotional faces than the control group (0.879 vs. 0.936, P=0.001), whereas the checking OCD group showed no significant difference from the HC ( P>0.05); there were no significant group differences in shape matching task ( P>0.05). The accuracy of shape matching task was significantly higher than face matching task in the three groups (shape: checking OCD=0.936,washing OCD=0.929,HC=0.943; face:checking OCD=0.877,washing OCD=0.844,HC=0.917;all P>0.05). Conclusions:Checking OCD and washing OCD exhibit distinct behavioral impairment patterns in response inhibition and emotional processing. Checking-type OCD is primarily characterized by impaired response inhibition, whereas washing-type OCD is mainly associated with deficits in emotion processing.

Objective:This study was to explore the behavioral and electroencephalographic characteristics of impaired cognitive flexibility in patients with obsessive-compulsive disorder (OCD) with comorbid obsessive-compulsive personality disorder(OCPD).Methods:A cross-sectional study was designed to collect data prospectively from OCD patients who visited the psychology departments at two top-tier hospitals in Changsha between September 2019 and December 2021. The study included 31 patients with OCD+OCPD(18 males, 13 females; aged 15-46 (22.8±8.4) years) and 39 patients with OCD only(25 males, 14 females; aged 15-34 (21.6±4.2) years). Additionally, 32 age-matched healthy controls(HC: 18 males, 14 females; aged 18-25 (20.8±1.7) years). All participants completed the Task-Switching paradigm while behaioral and event-related potentials(ERPs) were recorded simultaneously. Repeated measures analysis of variance was used to compare the group differences in behavioral and ERP data(electrode sites: FZ, FCZ, CZ, PZ; ERP components: amplitude and latency of P2, N2, and P3).Results:The reaction times in both the comorbid and OCD groups were significantly longer than those in the healthy control group ((1 182±287) ms and (1 119±194) ms vs. (886±95) ms; F=18.48, both P<0.001). Accuracy rates in the comorbid and OCD groups were also significantly lower than in the healthy control group ((77±14)% and (77±13)% vs. (84±7)%; F=4.00, both P<0.05). In the task-switching condition, the N2 latency at the CZ electrode was significantly shorter in the comorbid and OCD groups compared to the healthy control group ((290±22) ms and (291±29) ms vs. (308±27) ms; F=3.81, both P<0.05). Furthermore, at the FZ and FCZ electrodes, the N2 latency in the comorbid group was significantly shorter in the switching task compared to the repetition task. Conclusion:OCD patients with comorbid OCPD show more severe cognitive flexibility impairments and display abnormal electrophysiological patterns.

Objective:This study aims to explore whether there are specific behavioral deficits of response inhibition and emotional processing in patients with checking obsessive-compulsive disorder (OCD) and those with washing OCD.Methods:A cross-sectional study was conducted from January 2020 to December 2022, collecting clinical data from 75 OCD patients at the outpatient psychological consultation clinic of Xiangya Second Hospital and the clinical psychology department of Hunan Brain Hospital. The sample included 40 OCD patients with checking type (checking group, 24 males, 16 females, aged 14-34 years, mean age 22.1±5.0 years) and 35 OCD patients with washing type (washing group, 12 males, 23 females, aged 14-41 years, mean age 22.6±6.7 years). An age-matched healthy control group (control group) of 80 individuals (HCs, 37 males and 43 females, aged 14-25 years, mean age 20.8±1.9 years) was also recruited. All participants completed the Go/No-go task and Hariri task with behavioral data recorded. The Dimensional Yale-Brown Obsessive-Compulsive Scale was used to assess the severity of OCD symptoms. The Center for Epidemiologic Studies Depression Scale (CES-D) and State Anxiety Inventory (STAI) were used to assess the severity of depression and anxiety. A 3 (group: checking OCD, washing OCD and HC)×2 (task type: Go vs. No-go/Shape vs. Face) repeated-measures ANOVA was conducted to compare the behavioral performance across tasks.Results:Compared with HC group, both checking OCD group and washing OCD group had significantly higher scores in depression and anxiety ( F=85.43, 32.33,both P<0.05). When performing Go/No-go task, a significant group×task interaction effect was observed ( F3(2, 152)=3.23, P3=0.042, partialη32=0.04). In the checking OCD group, No-go accuracy was significantly lower than Go accuracy (accuracy=0.821 vs. 0.893, P<0.001); the checking OCD had significantly lower accuracy than HC in the No-go task (accuracy=0.821 vs. 0.876, P=0.005); there were no significant group differences between the washing OCD and HC in the No-go task ( P>0.05). When performing Hariri task, a significant group×task interaction effect was found ( F3(2, 152)=4.91, P3=0.009, partial η32=0.06). The washing OCD group showed significantly lower accuracy in matching emotional faces than the control group (0.879 vs. 0.936, P=0.001), whereas the checking OCD group showed no significant difference from the HC ( P>0.05); there were no significant group differences in shape matching task ( P>0.05). The accuracy of shape matching task was significantly higher than face matching task in the three groups (shape: checking OCD=0.936,washing OCD=0.929,HC=0.943; face:checking OCD=0.877,washing OCD=0.844,HC=0.917;all P>0.05). Conclusions:Checking OCD and washing OCD exhibit distinct behavioral impairment patterns in response inhibition and emotional processing. Checking-type OCD is primarily characterized by impaired response inhibition, whereas washing-type OCD is mainly associated with deficits in emotion processing.

Objective:This study was to explore the behavioral and electroencephalographic characteristics of impaired cognitive flexibility in patients with obsessive-compulsive disorder (OCD) with comorbid obsessive-compulsive personality disorder(OCPD).Methods:A cross-sectional study was designed to collect data prospectively from OCD patients who visited the psychology departments at two top-tier hospitals in Changsha between September 2019 and December 2021. The study included 31 patients with OCD+OCPD(18 males, 13 females; aged 15-46 (22.8±8.4) years) and 39 patients with OCD only(25 males, 14 females; aged 15-34 (21.6±4.2) years). Additionally, 32 age-matched healthy controls(HC: 18 males, 14 females; aged 18-25 (20.8±1.7) years). All participants completed the Task-Switching paradigm while behaioral and event-related potentials(ERPs) were recorded simultaneously. Repeated measures analysis of variance was used to compare the group differences in behavioral and ERP data(electrode sites: FZ, FCZ, CZ, PZ; ERP components: amplitude and latency of P2, N2, and P3).Results:The reaction times in both the comorbid and OCD groups were significantly longer than those in the healthy control group ((1 182±287) ms and (1 119±194) ms vs. (886±95) ms; F=18.48, both P<0.001). Accuracy rates in the comorbid and OCD groups were also significantly lower than in the healthy control group ((77±14)% and (77±13)% vs. (84±7)%; F=4.00, both P<0.05). In the task-switching condition, the N2 latency at the CZ electrode was significantly shorter in the comorbid and OCD groups compared to the healthy control group ((290±22) ms and (291±29) ms vs. (308±27) ms; F=3.81, both P<0.05). Furthermore, at the FZ and FCZ electrodes, the N2 latency in the comorbid group was significantly shorter in the switching task compared to the repetition task. Conclusion:OCD patients with comorbid OCPD show more severe cognitive flexibility impairments and display abnormal electrophysiological patterns.

Objective:To investigate the effect of emotional cues on prospective memory (PM) in obsessive-compulsive disorder (OCD) patients.Methods:From December 2014 to November 2019, 157 patients with obsessive-compulsive disorder (OCD) and 119 healthy controls (HC) matched for age, gender and intelligence participated in the study. A laboratory event-based PM paradigm was used to assess the PM function. The PM Accuracy (PM acc) of prospective memory pictures with different emotional cues in the two groups was investigated by a mixed design of 2 (group: OCD group, HC group)×3 (emotional cue attributes: positive, neutral, and negative). Correlation analysis was used to explore the relationship between PM acc and clinical variables in patients with OCD.Results:Repeated measures ANOVA showed that the main effect of emotional cues was not significant ( F=0.377, P>0.05), the difference between the two groups was significant ( F=8.863, P<0.01, η 2=0.030), and the PM acc of the OCD group was lower than HC. The interaction was significant ( F=3.261, P<0.05, η 2=0.012). Further simple effect analysis showed that in the HC group, PM acc with positive emotional cues and negative emotional cues were significantly greater than PM acc with neutral emotional cues (Cohen′s d values are 2.29 and 2.94). There was no significant difference between PM acc with positive emotional cues and PM acc with negative emotional cues. In the OCD group, PM acc with negative emotional cues was significantly greater than PM acc with positive and neutral emotional cues (Cohen′s d values are 1.57 and 1.14). There was no significant difference between PM acc with positive emotional cues and PM acc with neutral emotional cues. Correlation analysis showed that PM acc with positive and negative emotional cues of OCD patients were significantly positively correlated with state anxiety level ( r>0.200, P<0.01). There was no significant correlation between PM acc with neutral emotional cues and anxiety level. Conclusion:OCD patients had impaired prospective memory, mainly manifested as impaired prospective memory emotional enhancement effect, only negative emotion enhancement effect showed. In contrast, positive emotion has no enhancement effect on the prospective memory of OCD patients.

Objective:To investigate the effect of emotional cues on prospective memory (PM) in obsessive-compulsive disorder (OCD) patients.Methods:From December 2014 to November 2019, 157 patients with obsessive-compulsive disorder (OCD) and 119 healthy controls (HC) matched for age, gender and intelligence participated in the study. A laboratory event-based PM paradigm was used to assess the PM function. The PM Accuracy (PM acc) of prospective memory pictures with different emotional cues in the two groups was investigated by a mixed design of 2 (group: OCD group, HC group)×3 (emotional cue attributes: positive, neutral, and negative). Correlation analysis was used to explore the relationship between PM acc and clinical variables in patients with OCD.Results:Repeated measures ANOVA showed that the main effect of emotional cues was not significant ( F=0.377, P>0.05), the difference between the two groups was significant ( F=8.863, P<0.01, η 2=0.030), and the PM acc of the OCD group was lower than HC. The interaction was significant ( F=3.261, P<0.05, η 2=0.012). Further simple effect analysis showed that in the HC group, PM acc with positive emotional cues and negative emotional cues were significantly greater than PM acc with neutral emotional cues (Cohen′s d values are 2.29 and 2.94). There was no significant difference between PM acc with positive emotional cues and PM acc with negative emotional cues. In the OCD group, PM acc with negative emotional cues was significantly greater than PM acc with positive and neutral emotional cues (Cohen′s d values are 1.57 and 1.14). There was no significant difference between PM acc with positive emotional cues and PM acc with neutral emotional cues. Correlation analysis showed that PM acc with positive and negative emotional cues of OCD patients were significantly positively correlated with state anxiety level ( r>0.200, P<0.01). There was no significant correlation between PM acc with neutral emotional cues and anxiety level. Conclusion:OCD patients had impaired prospective memory, mainly manifested as impaired prospective memory emotional enhancement effect, only negative emotion enhancement effect showed. In contrast, positive emotion has no enhancement effect on the prospective memory of OCD patients.

Objective:This study aims to explore whether there is impaired inhibition function and the brain imaging characteristics of inhibition dysfunction in patients with obsessive-compulsive disorder (OCD).Methods:A total of 16 drug-naive OCD patients and 18 healthy controls (HC) completed the Go-Nogo task to detect the impairment of inhibition function, and the task-related brain magnetic resonance imaging were collected. The differences of average reaction time and correct response rate between OCD patients and HC under Go and Nogo conditions were compared, and the differences of brain activation between the two groups in the process of successful response inhibition and error monitoring were also compared.Results:Under Nogo condition, the average correct rate in patients with OCD was significantly lower than that of HC (0.85±0.08 vs.0.93±0.51; t=-3.06, P<0.05). In error processing analysis, patients with OCD showed significantly enhanced brain activities in bilateral inferiortemporal (left: t=3.11; right: t=2.71), right middlefronta ( t=2.52), right parahippocampa ( t=2.53), and left posteriorcingulate ( t=3.03), while decreased brain activities were found in bilateral putamen (left: t=-3.03; right: t=-3.12), right inferiorfrontal ( t=-3.29), right superiorfrontal ( t=-3.12), and right precentral ( t=-2.91) compared with control group ( P<0.05, FWE corrected, cluster size>10 voxels). Conclusion:Patients with OCD have impaired inhibition function, and their abnormal brain function is mainly manifested in the process of error monitoring.

Objective:This study aims to explore whether there is impaired inhibition function and the brain imaging characteristics of inhibition dysfunction in patients with obsessive-compulsive disorder (OCD).Methods:A total of 16 drug-naive OCD patients and 18 healthy controls (HC) completed the Go-Nogo task to detect the impairment of inhibition function, and the task-related brain magnetic resonance imaging were collected. The differences of average reaction time and correct response rate between OCD patients and HC under Go and Nogo conditions were compared, and the differences of brain activation between the two groups in the process of successful response inhibition and error monitoring were also compared.Results:Under Nogo condition, the average correct rate in patients with OCD was significantly lower than that of HC (0.85±0.08 vs.0.93±0.51; t=-3.06, P<0.05). In error processing analysis, patients with OCD showed significantly enhanced brain activities in bilateral inferiortemporal (left: t=3.11; right: t=2.71), right middlefronta ( t=2.52), right parahippocampa ( t=2.53), and left posteriorcingulate ( t=3.03), while decreased brain activities were found in bilateral putamen (left: t=-3.03; right: t=-3.12), right inferiorfrontal ( t=-3.29), right superiorfrontal ( t=-3.12), and right precentral ( t=-2.91) compared with control group ( P<0.05, FWE corrected, cluster size>10 voxels). Conclusion:Patients with OCD have impaired inhibition function, and their abnormal brain function is mainly manifested in the process of error monitoring.

Objective To examine the characteristics of affective intensity and cognitive emotion regulation in subjects with borderline personality disorder ( BPD) . Methods The BPD subscale of personal-ity disorder questionnaire( PDQ-4+) was used to assess the BPD symptoms,the short affective intensity scale (SAIS) and cognitive emotion regulation questionnaire (CERQ) were used to measure affect intensity and cognitive emotion regulation strategy,respectively. 765 subjects with BPD and 776 healthy controls were se-lected. The independent-samples t test was used to analyze the differences between BPD group and controls and logistic regression analysis was used to examine the related factors affecting the BPD. Results Com-pared with the control group(negative intensity:(3.08±0.66),negative coping dimension:(37.20±5.94), BPD group got higher scores in negative intensity((3.88±0.74), t=22.29, P<0.01,Cohen''s d>0.8)and negative coping dimension((44.77±6.36), t=24.16, P<0.01,Cohen''s d>0.8). The logistic regression anal-ysis showed that negative intensity(B=1.38,Exp(B)=3.97,95%CI for EXP(B):3.15~5.00, P<0.01) and negative cognitive regulations strategy(B=0.19,Exp(B)=1.21,95% CI:1.18-1.25, P<0.01) could affect the prevalence of BPD. Conclusion Subjects with BPD traits have more significant negative affective inten-sity and tend to use negative cognitive regulations strategy.

Objective To study the difference of attentional bias towards general negative words between non-mediated obsessive-compulsive disorder (OCD) patients and healthy controls.Methods Event-related potentials (ERPs) were collected from 26 non-mediated OCD patients and 24 normal controls while they performed an emotional Stroop task.Results Compared to healthy controls,OCD patients showed significantly longer reaction time (OCD:(467 ± 14.88) ms,Controls:(409.65 ± 15.49) ms,P＜ 0.01),and had significantly larger P2 and P3 amplitude to all three types of words (P2 amplitude:OCD:(10.41±0.49) μV,Controls:(8.89±0.48) μV,P＜0.05;P3 amplitude:(10.04±0.68) μV,Controls:(7.68±0.67) μV,P＜0.05).In addition,the P2 peak latency of the frontal area in OCD patients was significantly longer than that in healthy controls(OCD:(190.09±4.71) ms,Controls:(179.60±4.72) ms,P＜0.05).Conclusion Current findings suggest that OCD patients are characterized by a general attentional inhibition deficit but not an attentional bias to the negative words.