1.Motor imagery electroencephalogram classification based on sparse spatiotemporal decomposition and channel attention.
Hongli LI ; Feichao YIN ; Ronghua ZHANG ; Xin MA ; Hongyu CHEN
Journal of Biomedical Engineering 2022;39(3):488-497
Motor imagery electroencephalogram (EEG) signals are non-stationary time series with a low signal-to-noise ratio. Therefore, the single-channel EEG analysis method is difficult to effectively describe the interaction characteristics between multi-channel signals. This paper proposed a deep learning network model based on the multi-channel attention mechanism. First, we performed time-frequency sparse decomposition on the pre-processed data, which enhanced the difference of time-frequency characteristics of EEG signals. Then we used the attention module to map the data in time and space so that the model could make full use of the data characteristics of different channels of EEG signals. Finally, the improved time-convolution network (TCN) was used for feature fusion and classification. The BCI competition IV-2a data set was used to verify the proposed algorithm. The experimental results showed that the proposed algorithm could effectively improve the classification accuracy of motor imagination EEG signals, which achieved an average accuracy of 83.03% for 9 subjects. Compared with the existing methods, the classification accuracy of EEG signals was improved. With the enhanced difference features between different motor imagery EEG data, the proposed method is important for the study of improving classifier performance.
Algorithms
;
Brain-Computer Interfaces
;
Electroencephalography/methods*
;
Humans
;
Imagery, Psychotherapy
;
Imagination
2.Multi-task motor imagery electroencephalogram classification based on adaptive time-frequency common spatial pattern combined with convolutional neural network.
Ying HU ; Yan LIU ; Chenchen CHENG ; Chen GENG ; Bin DAI ; Bo PENG ; Jianbing ZHU ; Yakang DAI
Journal of Biomedical Engineering 2022;39(6):1065-1073
The effective classification of multi-task motor imagery electroencephalogram (EEG) is helpful to achieve accurate multi-dimensional human-computer interaction, and the high frequency domain specificity between subjects can improve the classification accuracy and robustness. Therefore, this paper proposed a multi-task EEG signal classification method based on adaptive time-frequency common spatial pattern (CSP) combined with convolutional neural network (CNN). The characteristics of subjects' personalized rhythm were extracted by adaptive spectrum awareness, and the spatial characteristics were calculated by using the one-versus-rest CSP, and then the composite time-domain characteristics were characterized to construct the spatial-temporal frequency multi-level fusion features. Finally, the CNN was used to perform high-precision and high-robust four-task classification. The algorithm in this paper was verified by the self-test dataset containing 10 subjects (33 ± 3 years old, inexperienced) and the dataset of the 4th 2018 Brain-Computer Interface Competition (BCI competition Ⅳ-2a). The average accuracy of the proposed algorithm for the four-task classification reached 93.96% and 84.04%, respectively. Compared with other advanced algorithms, the average classification accuracy of the proposed algorithm was significantly improved, and the accuracy range error between subjects was significantly reduced in the public dataset. The results show that the proposed algorithm has good performance in multi-task classification, and can effectively improve the classification accuracy and robustness.
Humans
;
Adult
;
Imagination
;
Neural Networks, Computer
;
Imagery, Psychotherapy/methods*
;
Electroencephalography/methods*
;
Algorithms
;
Brain-Computer Interfaces
;
Signal Processing, Computer-Assisted
3.Research on the feature representation of motor imagery electroencephalogram signal based on individual adaptation.
Lizheng PAN ; Yi DING ; Shunchao WANG ; Aiguo SONG
Journal of Biomedical Engineering 2022;39(6):1173-1180
Aiming at the problem of low recognition accuracy of motor imagery electroencephalogram signal due to individual differences of subjects, an individual adaptive feature representation method of motor imagery electroencephalogram signal is proposed in this paper. Firstly, based on the individual differences and signal characteristics in different frequency bands, an adaptive channel selection method based on expansive relevant features with label F (ReliefF) was proposed. By extracting five time-frequency domain observation features of each frequency band signal, ReliefF algorithm was employed to evaluate the effectiveness of the frequency band signal in each channel, and then the corresponding signal channel was selected for each frequency band. Secondly, a feature representation method of common space pattern (CSP) based on fast correlation-based filter (FCBF) was proposed (CSP-FCBF). The features of electroencephalogram signal were extracted by CSP, and the best feature sets were obtained by using FCBF to optimize the features, so as to realize the effective state representation of motor imagery electroencephalogram signal. Finally, support vector machine (SVM) was adopted as a classifier to realize identification. Experimental results show that the proposed method in this research can effectively represent the states of motor imagery electroencephalogram signal, with an average identification accuracy of (83.0±5.5)% for four types of states, which is 6.6% higher than the traditional CSP feature representation method. The research results obtained in the feature representation of motor imagery electroencephalogram signal lay the foundation for the realization of adaptive electroencephalogram signal decoding and its application.
Humans
;
Imagination
;
Signal Processing, Computer-Assisted
;
Brain-Computer Interfaces
;
Electroencephalography/methods*
;
Imagery, Psychotherapy
;
Algorithms
4.A Comparative Study on the Effectiveness of Individual and Group Play Therapy on Symptoms of Oppositional Defiant Disorder among Children
Narges MORSHED ; Mohammad BABAMIRI ; Mehdi ZEMESTANI ; Nasim ALIPOUR
Korean Journal of Family Medicine 2019;40(6):368-372
BACKGROUND: This research compared the effectiveness of play therapy provided individually or in groups for oppositional defiant disorder (ODD) symptoms among children. METHODS: This was a randomized controlled trial that used a multi-stage random sampling method. Participants included 45 children aged 6 to 10 years old with ODD, all of whom had been referred to medical consultation centers in Ahvaz, Iran in 2012. Experimental groups consisted of 15 children receiving individual play therapy and 15 receiving group play therapy, while the control group consisted of 15 randomly selected children. Data were collected using the child behavior checklist parent report form and teacher report form, along with clinical interviews with the parents. Play therapy took place weekly for eight total sessions; individual sessions lasted 45 minutes each, while group sessions were each 60 minutes in duration. Participants were assessed in three stages, including pre-intervention, post-intervention, and at 2-month follow-up. PASW SPSS ver. 18.0 software (SPSS Inc., Chicago, IL, USA) and analysis of covariance analysis methods were used to analyze data. RESULTS: Results showed meaningful decreases in ODD symptoms in the experimental groups in comparison with the control group, based on parent reporting (P≤0.001 and F=129.40) and the teacher reports additionally showed meaningful decreases in ODD symptoms in the experimental groups compared to the control group, (P≤0.001 and F=93.14). Furthermore, the effects were maintained after 2 months. CONCLUSION: This research supports the efficacy of individual and group play therapy for the treatment of ODD in children, as well as the consistency of the effects at 2-month follow-up.
Attention Deficit and Disruptive Behavior Disorders
;
Checklist
;
Child Behavior
;
Child
;
Follow-Up Studies
;
Humans
;
Iran
;
Methods
;
Parents
;
Play Therapy
;
Psychotherapy
5.Does Psychodrama Affect Perceived Stress, Anxiety-Depression Scores and Saliva Cortisol in Patients with Depression?.
Lale Gönenir ERBAY ; Ismail REYHANI ; Süheyla ÜNAL ; Cemal ÖZCAN ; Tuba ÖZGÖÇER ; Cihat UÇAR ; Sedat YILDIZ
Psychiatry Investigation 2018;15(10):970-975
OBJECTIVE: Little is known about the effects of psychodrama group therapy on the level of stress, anxiety and depression of the group members, and the biological markers of stress. The aim of this study test cortisol level as a biological reflection of some mental characteristics gained by the psychodrama method in coping with stress. METHODS: Depressive patients aged between 18 and 65 years, who diagnosed with depression according to DSM-5, without psychiatric comorbidity, who do not use drugs and were available for psychodrama were enrolled into the study. These patients were evaluated using the Perceived Stress Scale, State-Trait Anxiety Inventory and Beck Depression Inventory. In order to observe the circadian rhythm of cortisol, samples were collected from the participants before lunch, before dinner and before going to sleep on the day before psychodrama and on the 0, 15th, and 30th minutes after awakening in the morning of the psychodrama day; as well as just before and after the psychodrama session. Saliva cortisol level just before the initial session of psychodrama group therapy was compared with the saliva cortisol level just after the last psychodrama session at the end of 16 weeks. RESULTS: Statistically significant difference was determined between the scores of perceived stress scale, STAI-1, STAI-2, beck depression inventory and salivary cortisol level before and after psychodrama session. There was significant decrease in both the scale scores and salivary cortisol after vs. before psychodrama. CONCLUSION: This results is important as it shows the biological aspect of clinical improvement. Further studies would provide us with better understanding of the effects of psychodrama group psychotherapy on depressive mood and biological projections by means of short-term and long-term follow-up studies.
Anxiety
;
Biomarkers
;
Circadian Rhythm
;
Comorbidity
;
Depression*
;
Follow-Up Studies
;
Humans
;
Hydrocortisone*
;
Lunch
;
Meals
;
Methods
;
Psychodrama*
;
Psychotherapy, Group
;
Saliva*
6.The Theory of Meaning in Hospice Care.
Korean Journal of Hospice and Palliative Care 2017;20(4):221-225
Care for the human spirit is a core component of quality end-of-life care. Logotherapy, based on the premise that the primary motivation of human beings is to find meaning and purpose in life, can be helpful in providing care for patients, families, and loved ones in hospice care. The use of Socratic dialog in posing questions about one's life experiences, values, and attitudes is a useful method of evoking reflection. Guidance for finding meaning, even until one's last moments, can be found in the three categories: (a) tasks or deeds, (b) experiences of love and beauty, and (c) attitudes chosen in spite of a fate that cannot be changed. Self-transcendence, defined as getting outside the self for the good of others, can add meaning to life. A growing body of research concerning meaning-centered therapy is promising for improving spiritual well-being and a sense of meaning and purpose in life.
Beauty
;
Hospice Care*
;
Hospices*
;
Humans
;
Life Change Events
;
Love
;
Methods
;
Motivation
;
Psychotherapy
;
Spirituality
;
Stress, Psychological
7.Research on Psychiatric Treatment by Psychiatrists of Chosun-Governor Hospital and Keijo Imperial University Hospital in Korea during Japanese Colonial Rule.
Journal of Korean Neuropsychiatric Association 2016;55(3):143-157
This review describes the types of psychiatric treatment studied during the Japanese colonial period of 1910–1945 in Korea, known at the time as Chosun. Twenty-nine research papers and abstracts on psychiatric treatment were reviewed, which were published in the Shinkeigaku-zassi (Neurologia), the Seishin-shinkei-gaku zassi (Psychiatria Et Neurologia Japonica) and the Journal of Chosun Medical Association, by faculty members of the department of neuropsychiatry, Chosun-Governor Hospital and Keijo (Seoul) Imperial University School of Medicine. The major research area was biological psychiatry and biological treatment, as Japanese pioneers in psychiatry at that time had introduced German psychiatry into Japan. Professor Kubo published the most papers, followed by Dr. Hattori, Dr. Hikari, and Professor Suits. In Chosun-Governor Hospital, research on prolonged sleep therapy was an active field. In the Imperial University Hospital, malarial fever therapy, sulphur-induced fever therapy, and insulin shock treatment were the most frequent research topics. Some were tried for the first time in the Japanese Empire, which reflected the pioneering position of the university. These achievements are attributed to Professor Kubo. Six papers on psychotherapy were published. Among them, two papers were on persuasion therapy, three papers were case reports of psychoanalytic therapy, and one paper on Freud. However, this psychoanalytic therapy research seemed to be limited trials conducted following literal guidance, and no further development was noted. Generally, research was characterized by simple design, small numbers of subjects, lack of objective evaluation method, lack of statistical treatment, and especially lack of ethical consideration comparing with today's standard.
Asian Continental Ancestry Group*
;
Biological Psychiatry
;
Humans
;
Hyperthermia, Induced
;
Insulin Coma
;
Japan
;
Korea*
;
Methods
;
Neuropsychiatry
;
Persuasive Communication
;
Psychiatry*
;
Psychoanalytic Therapy
;
Psychotherapy
8.Effects of group psychological counseling on self-confidence and social adaptation of burn patients.
Rui DANG ; Yishen WANG ; Na LI ; Ting HE ; Mengna SHI ; Yanyan LIANG ; Chan ZHU ; Yongbo ZHOU ; Zongshi QI ; Dahai HU
Chinese Journal of Burns 2014;30(6):487-490
OBJECTIVETo explore the effects of group psychological counseling on the self-confidence and social adaptation of burn patients during the course of rehabilitation.
METHODSSixty-four burn patients conforming to the inclusion criteria and hospitalized from January 2012 to January 2014 in Xijing Hospital were divided into trial group and control group according to the method of rehabilitation, with 32 cases in each group. Patients in the two groups were given ordinary rehabilitation training for 8 weeks, and the patients in trial group were given a course of group psychological counseling in addition. The Rosenberg's Self-Esteem Scale was used to evaluate the changes in self-confidence levels, and the number of patients with inferiority complex, normal feeling, self-confidence, and over self-confidence were counted before and after treatment. The Abbreviated Burn-Specific Health Scale was used to evaluate physical function, psychological function, social relationship, health condition, and general condition before and after treatment to evaluate the social adaptation of patients. Data were processed with t test, chi-square test, Mann-Whitney U test, and Wilcoxon test.
RESULTS(1) After treatment, the self-confidence levels of patients in trial group were significantly higher than those in control group (Z = -2.573, P < 0.05). Among trial group, the number of patients with inferiority complex was 17 (53.1%) before treatment, which was decreased to 6 (18.8%) after treatment; the number of patients with normal feeling and that of self-confidence were 8 (25.0%) and 4 (12.5%) before treatment, which were respectively increased to 13 (40.6%) and 10 (31.3%) after treatment. The overall difference in trial group was obvious between before and after treatment (Z = -4.123, P < 0.01) . There was no obvious difference in self-confidence level of patients in control group between before and after treatment (Z = -1.000, P > 0.05). (2) After treatment, the scores of psychological function, social relationship, health condition, and general condition were (87 ± 3), (47.8 ± 3.6), (49 ± 3), and (239 ± 10) points in trial group, which were significantly higher than those in control group [(79 ± 4), (38.3 ± 5.6), (46 ± 4), and (231 ± 9) points, with t values respectively -8.635, -8.125, -3.352, -3.609, P values below 0.01]. After treatment, the scores of physical function, psychological function, social relationship, health condition, and general condition in trial group were significantly higher than those before treatment (with t values from -33.282 to -19.515, P values below 0.05). The scores of physical function, psychological function, health condition, and general condition in control group after treatment were significantly higher than those before treatment (with t values from -27.137 to -17.790, P values below 0.05).
CONCLUSIONSGroup psychological counseling combined with ordinary rehabilitation training give rise to significant effects on self-confidence level and social adaptation for burn patients.
Adaptation, Psychological ; Burns ; psychology ; therapy ; Counseling ; Humans ; Psychotherapy, Group ; methods ; Self Concept ; Social Adjustment ; Treatment Outcome
9.Psychological intervention for postpartum depression.
Lei JIANG ; Zhu-zhen WANG ; Li-rong QIU ; Guo-bin WAN ; Yan LIN ; Zhen WEI
Journal of Huazhong University of Science and Technology (Medical Sciences) 2014;34(3):437-442
The postpartum depression outcome and the effect of psychological intervention were studied in order to reduce the occurrence and development of the postpartum depression. A survey of 4000 women within 4-6 weeks postpartum in 80 communities in Shenzhen, China was performed using random cluster sampling method. By employing Edinburgh Postnatal Depression Scale (EPDS) as a screening tool, the positive women (defined as EPDS ≥10) were randomly divided into intervention group and control group at a ratio of 1:2. The women in the intervention group were treated by means of mailing postpartum depression prevention and treatment knowledge manual, face-to-face counseling, and telephone psychological counseling interventions aiming at individual risk factors, while those in the control group were treated with conventional methods. EPDS scores were assessed in these two groups again at 6th month postpartum. Totally, 3907 valid questionnaires were obtained. All the 771 positive women were divided into two groups: 257 in the intervention group, and 514 in the control group. At 6th month postpartum, the EPDS scores in the intervention group were decreased significantly, from baseline stage (12.84±3.02) to end stage (3.05±2.93), while EPDS scores in the control group were reduced from 12.44±2.78 to 6.94±4.02. There were significant differences in the EPDS scores at end stage between the two groups (t=13.059, P<0.001). Psychological intervention can reduce postpartum depression, with better maternal compliance. It is feasible and necessary to establish postpartum depression screening and psychological intervention model in community-hospital and include the postpartum depression screening, intervention, and follow-up into the conventional healthcare.
Adolescent
;
Adult
;
Depression, Postpartum
;
diagnosis
;
psychology
;
therapy
;
Female
;
Follow-Up Studies
;
Humans
;
Interview, Psychological
;
Mass Screening
;
Psychotherapy
;
methods
;
Risk Factors
;
Surveys and Questionnaires
;
Treatment Outcome
;
Young Adult
10.Do intercultural factors play a role in exacerbating psychiatric symptoms?
Singapore medical journal 2013;54(1):e16-7
We report the case of a 29-year-old mixed-race woman suffering from recurrent major depressive episodes, with suicidal ideation and risk, involving several inpatient admissions. A comorbid diagnosis of borderline personality disorder was also recorded in one of her previous inpatient admissions. During her last inpatient admission, a multidisciplinary case discussion and review of the patient's life highlighted several possible intercultural trigger factors that could have contributed to the exacerbation of her psychiatric illness. We emphasise the need to explore intercultural predisposing and precipitating factors for a more complete psychodynamic understanding of psychiatric illnesses among the multiracial population of Singapore. This also adds to the discussion on the management of such patients with the option of formal in-depth psychotherapy in adjunct to medication. This may prevent recurrent relapses, modify suicide intent and reduce the necessity for inpatient treatment, which will be cost-effective and result in efficacious treatment.
Adult
;
Asian Continental Ancestry Group
;
Borderline Personality Disorder
;
epidemiology
;
psychology
;
Comorbidity
;
Cultural Characteristics
;
Depressive Disorder, Major
;
epidemiology
;
psychology
;
Ethnic Groups
;
Female
;
Humans
;
Psychotherapy
;
methods
;
Race Relations
;
Religion
;
Risk
;
Singapore
;
Suicidal Ideation

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