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Objective:To explore the characteristics of attentional bias to emotional faces of depressed college students with alexithymia.Methods:Using self-rating depression scale (SDS) and the twenty-item Toronto alexithymia scale(TAS-20), 25 low alexithymic-currently depressed undergraduates (LA-CD group), 33 low alexithymic-non depressed undergraduates(LA-ND group) and 23 high alexithymic-currently depressed undergraduates(HA-CD group) were selected from 885 valid questionnaires.Using eye tracking system, emotional face pictures were selected as stimulus materials, and the relative gaze time(attention bias score) of experimental participants was analyzed by statistical methods such as covariance analysis and adjustment analysis to explore the attentional bias of depressed college students with alexithymia.Results:(1) Under the low level of alexithymia, there was significant difference in attentional bias between college students in depression group (-0.23±0.18) and non-depressed group (0.06±0.11) ( F=55.876, P<0.01). (2) There were significant differences in relative attention bias among LA-CD group (-0.234±0.150), HA-CD group(-0.070±0.153) and LA-ND group (0.064±0.149) ( F(2, 78)=27.685, P<0.01). According to Bonferroni test, compared to the LA-CD group, the HA-CD group and LA-ND group showed less negative attentional bias.(3) The interaction between total SDS score and total TAS-20 score showed significant difference.Alexithymia played a regulatory role between total SDS score and attentional bias( β=0.333, t=3.345, P<0.01). Conclusion:Both the depressed college students with high alexithymia and the non-depressed college students with low alexithymia show less negative attentional bias.Alexithymia plays a regulatory role between depression and attentional bias.
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Objective:To investigate whether attentional bias exists in somatic symptom disorders and its correlation with negative cognition and childhood trauma.Methods:Totally 33 patients with physical disorder (physical disorder group) and 33 healthy controls (healthy control group) who met the inclusion and exclusion criteria in the outpatient or inpatient department of Sichuan Provincial People's Hospital were collected as the research objects.The patient health questionnaire (PHQ-15) and somatic system disorder-B criteria scale (SSD-12) were used to evaluate the severity of the disease, the childhood trauma scale (CTQ) was used to evaluate the childhood trauma experience, and the dot probe task edited by E-prime software was used to measure the reaction time.The repeated measurement variance analysis and independent sample t-test were used to compare the attention bias of the two groups, and the Pearson correlation analysis was used to analyze the correlation between attention bias, disease severity and childhood trauma. Results:The reaction time to negative pictures((510.86±124.72)ms) was longer than that to positive pictures ((504.21±117.21)ms, F=9.10, P<0.05) for physical disorder group and healthy control group, and the negative orienting index(5.22±28.02) in physical disorder group was significantly higher than that in healthy control group(-12.62±32.33)( t=2.397, P<0.05). Disengaging index to positive emotions in SSD patients was positively correlated with their negative cognition of the disease ( r=0.403, P<0.05), and the disengaging index to negative emotions in SSD patients was negatively correlated with emotional neglect ( r=-0.399, P<0.05). Conclusion:Reducing the occurrence of childhood trauma and correcting patients' negative cognition may help to improve the attention bias of somatic symptom disorders.
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Objective:To explore the cognitive processing characteristics of semantic emotion Stroop and memory recognition in pilots with depression, and to systematically reveal the cognitive processing characteristics of attention and memory.Methods:The semantic emotional Stroop task and memory recognition test were performed in 36 depressed pilots and 36 healthy pilots.The results of attention and memory in cognitive processing were analyzed by repeated measurement analysis of variance using SPSS 18.0 software.Results:In the semantic emotion Stroop, the response time of the depression group was longer than that of the control group ( F(1, 70)=7.03, P=0.008), and the response time of the depression group(579.55±141.62)ms ) was longer than that of the neutral words (565.66±132.60)ms, P=0.003) and positive words (563.09±138.88)ms, P<0.01). In memory recognition, the accuracy of response to emotion words in the depressed group was higher than that in the control group ( F(1, 70)=23.15, P<0.01). The accuracy of response to negative words was higher in the depressed group than that to positive words ((0.50±0.32) vs (0.32±0.21), P=0.006) and neutral words ((0.50±0.32) vs (0.33±0.23), P=0.007). The depression group showed a conservative bias towards negative words ((1.46±0.40), P<0.01), and negative words compared with neutral words ((0.63±0.24), P<0.01) and positive words ((0.57±0.27), P<0.01) were cautious and conservative. Conclusion:Patients with depression have attention bias toward the negative information in semantic information processing, and negative memory bias in memory recognition.
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Objective@#To explore the characteristics of cognitive processing over time in recognition of different emotional faces in patients with depression.@*Methods@#Totally 29 patients with depression(patient group) and 30 normal control (control group)were selected.Subjects freely viewed positive, sad, threatening and neutral facial stimuli.Eye movement data were collected during the process of watching, and the differences of attention bias in time when the two groups of subjects recognized the four emotional faces were compared.The temporal variation trend of attention between the two groups was analyzed.@*Results@#There was no significant difference in the fixation duration between the patient group and the control group in 0-2 s((10.39±1.83)ms, (9.63±1.28)ms), 2-4 s((12.61±2.34)ms, (11.21±3.00)ms), 4-6 s ((12.26±3.11)ms, (10.47±4.06)ms)(all P>0.05). Within 6-8 s((12.64±3.42)ms, (8.90±4.02)ms), 8-10 s((12.55±4.19)ms, (9.36±4.02)ms), the fixation duration in the patient group was significantly longer than that in the control group (P<0.01). The fixation time of the positive faces in the patient group in 0-2 s ((12.07±2.65)ms, (14.50±3.54)ms), 2-4 s((10.69±3.26)ms, (14.66±5.25)ms), 4-6 s((10.11±4.24)ms, (15.43±8.02)ms), 6-8 s((9.39±5.12)ms, (16.88±9.60)ms), 8-10 s ((9.45±4.94)ms, (16.63±10.15)ms) was significantly lower than that in the control group (all P<0.01).@*Conclusion@#Patients with depression tend to pay attention to negative stimuli in the later stage of cognitive processing, while the attention to positive stimuli decreases in the early stage of cognitive processing.Cognitive processing of emotional stimuli in patients with depression is manifested as increased attention duration of negative stimuli and decreased attention duration of positive stimuli.
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Objective To examine the attention bias of background color from different emotional faces. Methods The study adopt 2 (background colors: cool and warm) × 2 (emotional faces:positive and negative emotions) within experimental design to examine the subjects' attention from different background color by 26 participants of college students (26 participants were selected to conduct experiments random-ly),with the background color and emotional face as independent variables. Results (1) Compared with positive face,the response time of negative face was shorter((677. 31±138. 66) ms vs ( 637. 97± 121. 69) ms),indicating that the attention bias of different emotional faces was significantly different(P<0. 05). (2) The interaction between the background color and the emotional face is significant. The response time of neg-ative emotional faces in cool colors ((636. 57±146. 20) ms) was significantly lower than that in positive e-motions ((721. 23±180. 40) ms,P<0. 05). There was no significant difference in warm colors (P>0. 05). Conclusion The cool background color can stimulate more negative emotions of college students,thus af-fecting individual attention bias. Subjects showed attention bias ( especially negative information) on emo-tional face.
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The researches on attention provide a promising framework for studying bipolar disorder pathophysiology and treatment.Previous findings have shown the negative attention bias maybe a risk factor for bipolar disorder.The current review discusses this issue in several aspects,including attention bias toward emotional information in bipolar disorder is state or trait,and whether shows mood-congruent bias;the character of attention bias in the different episodes of bipolar disorder.The article also puts forward an intervention of attention bias modification for treating bipolar disorder.
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Objective To explore the influence of repeatedly suprathreshold and subthreshold presentation of sad face on the attention bias of college students with depressive symptoms.Methods Five hundreds college students were extracted by using the cluster sampling method.The Beck Depression Inventory(BDI)and Self-rating Depression Scale(SDS)as the screening tool were applied to select the healthy control group(C),low-level depression group(B)and high-level depression group(A),20 participants in each group.Twenty neutral faces and 52 sad faces were selected from the emotional faces library researched and prepared by the Institute of Psychology of Chinese Academy of Sciences.Each face was suprathresholdly(1 000 ms)and subthresholdly(14 ms)presented four times to the participants.In the point detection task,the scores of response time,correction rate and attention bias of 3 groups to the emotional faces were recorded.Results (1)There was no statistically significant difference in the correction rate for 4 times suprathreshold and subthreshold presentations of sad faces between three groups;(2)The average response time of the fourth superathreshold and subthreshold presentation of sad faces in the group A was significantly lower than that of the first three times,the difference was statistically significant(P＜0.01),but the times of sad emotional face presentation had no statistically significant difference between the group C and B(P＞0.05);(3)compared with the group C,for the suprathesholdly presented sad face,the group A had significant a main effect in the aspects of average score of attention bias and sad emotional face presentation times(F=12.032,P＜0.05;F=91.637,P＜0.05),and had a significant interaction effect among the duration and times of presentation and group types(F=16.766,P＜0.05);(4)the group A showed significant attention bias of suprathresholdly presented sad faces at first,second and third time of presentation,but lost the bias at the fourth time.Conclusion The fourth time of sad face presentation could eliminate the attention bias of college students with high-level depression.
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Objective:To explore whether there will be attentional bias under the condition of fear,disgust and positive emotional arousal. Methods:Totally 96 college students were selected as participants in this study,inclu-ding 60 males and 36 femalesaged 18-22 years. Affective priming videos were adopted to prime participants'emo-tion (dread,disgust,joviality),and then they named the color of the cognitive words (positive words,negative words,neutral words)as quickly and accurately as possible. Reaction time and correctness were recorded. E-prime was adopted to write the experimental program. The reaction time for neutral words was baseline. Results:The aver-age reaction time (RT)of color-naming tasks of negative words were shorter than that of neutral words after fright-ening affective priming[(648 ±118)ms vs. (743 ±124)ms,P<0. 01]. Furthermore,the average RT of color-na-ming tasks of positive words were also shorter than that of neutral after frightening affective priming[(683 ±123) ms vs. (743 ±124)ms,P<0. 05]. The average RT of color-naming tasks of negative words were shorter than that of neutral words after disgusting affective priming[(579 ±86)ms vs. (720 ±101 )ms;P<0. 01 ]. Moreover,the av-erage RT of color-naming tasks of positive words were shorter than that of neutral words after delighted affective priming[(634 ±122)ms vs. (716 ±141)ms;P<0. 01]. Furthermore,the average RT of disgusting priming group-were shorter than the frightening priming grouptowards negative information[(579 ±86)ms vs. (648 ±118)ms,P<0. 05 ]. Conclusion:It suggests that the youth perform more obvious attentional bias towards negative information after disgusting affective priming than the frightening one. Frightening affective priming could evidently induce the attentional bias on positive information.
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Objective To study the mechanism underlying attentional biases toward event-related potentials (ERPs) in healthy male subjects.Methods 18 male healthy subjects performed emotional stroop task by pressing the buttons to the picture border color of two categories including the neutral and positive.The RT and Accuracy were recorded automatically.The ERPs were recorded by Neuroscan system.Results The behavioral results showed that neither the reaction time (628.11 ± 55.46) ms vs (628.81 ± 53.92) ms nor accuracy (96.87 ± 4.42) ％ vs (95.76±7.41)％ found difference under two conditions.ERPs results showed that the positive pictures evoked more greater P2 ((8.16±4.99)μV vs (4.30±3.83)μV) and P3 ((6.31±4.53)μV vs (4.27±4.16)μV) than neutral pictures.Conclusion Attentional biases toward positive emotion can be found in healthy male subjects,which can be related to emotional control process.