جستجوی مقالات مرتبط با کلیدواژه "frontal lobe" در نشریات گروه "روانشناسی"

Nowadays, the study of neurological infrastructure of personality traits has a special place in neuropsychological research. According to Eysenck, the correlation between personality and behavior is the result of individual differences in the brain function. The purpose of the present study was to investigate the frontal EEG asymmetry according to neuroticism and extraversion dimensions.

The statistical population of the present study was all male students of Payame Noor University of Tehran, who studied in the academic year of 1963-96. Based on the final scores of distribution in two dimensions of extroversion and neuroticism, four groups (extroverts, introverts, neuroticism and emotional stability) with 25 subjects were selected. The subjects completed the Eysenck Personality Questionnaire- Revised, Waterloo Handedness and footedness Questionnaires-Revised, and their eyedness was assessed, then the electrical activity of the brain of the subjects was recorded through EEG from different points on the scalp.

The findings of the study show that there is no significant difference between the four groups in the right frontopolar (FP2), right middle frontal (F4), right lateral frontal (F8) and right frontal cortex (RF) in alpha activity. There is a significant difference between the left frontopolar (FP1), left middle frontal (F3), left lateral frontal (F7) and left frontal cortex (LF) between the four groups (P<0.01); as alpha wave activity on left regions in neurotic and introverted individuals is more than emotional stable and extroverted subjects.

In general, the findings of the present study strengthen the relationship between personality dimensions and frontal EEG asymmetry.

The aim of this research was to study  the ffectiveness of the neurofeedback therapy for improvement of the frontal alpha asymmetry, executive functioning and symptoms severity in depressed patients. The study conducted with a randomized control trial design with pretest- posttest and follow- up plan. The study population included the referred persons to the psychiatry section of the Tabriz Hygiene Center with depression disorder diagnosis during a 5 months interval. Among these 30 patients were selected and randomly divided to experimental and control groups (n=15). The experimental group received 20 neurofeedback training sessions, whereas the control group received unreal neurofeedback training (placebo). The collected data were analyzed by a MANCOVA analysis. Increased activity of the left hemisphere, decreased activity of the right hemisphere, as well as, increased cognitive flexibility and decreased depression severity in the post-test stage were evident. A significant selective attention change was revealed in the follow-up stage as well. According to the results on this research, neurofeedback could be an effective intervention to modify the asymmeric frontal alpha activity  and improvement of the selective attention and depression symptoms in depressed patients.

This research sets out to study executive functions in the schizophrenic patients with negative and positive symptoms and a healthy group on the Wisconsin Card Sorting Test (WCST), as an index of frontal lobe functions.
For this purpose, 32 healthy people and 32 schizophrenic patients was selected the Scale for Assessment of Negative Symptoms (SANS) and Scale for Assessment of Positive Symptoms (SAPS) were carried out on schizophrenic patients. Results of these scales indicated that 14 patients had negative and 18 patients had positive symptoms. WCST were administrated for the samples. Data were analyzed by MANOVA.
Findings: results indicated that groups had significant differences in all five scales (Eta square=0/401, P=0/001, F (2, 61) =5/38). Groups in number of categories scale (P

Borderline personality disorder is one of the most prevalent disorders of axis II in psychiatry in which problems in interpersonal relationships is one of the most important problems of the patients. Linehan suggested that the patients problems are due to emotion dysregulations & emotion dysregulations are consequence of biological factors especially frontal lobe function & abnormal personality dimensions. Therefore، 130 patients with BPD completed TCI & PAI-BPF inventories & computerized emotion discrimination task. Also، the cortical activities of participants were recorded by EEG & analyzed by QEEG. Results indicated that absolute power of alpha band in frontal lobe & temperament character dimensions (novelty seeking، harm avoidance، reward dependency & cooperation) could predict emotional discrimination & interpersonal problems of BPD patients. Also، emotion discrimination could predict interpersonal problems. These results suggest that emotion discrimination ability could mediate relationships among alpha absolute power & temperament character dimensions with interpersonal problems f BPD patients.

The aim of this study was to assess the inhibition, social judgment, abstract reasoning and social skills non-verbal in RRMS patients and normal individuals.¬

This study was a comparative - causal of case control and the sample consisted 30 RRMS patients (19 women) by random sampling method from the members of Guilin MS association (635 members) which selected as patient group and then 30 normal individuals were matched chosen as controls group. Then two groups of the patients and control were evaluated by using of subtest similarities, comprehension, and picture arrangement of Wechsler test (Wechsler, 1981) and perseveration of Gestalt test (Loretta Bender, 1938).

results of T and MANOVA tests indicated that Patients with RRMS have poorer performances on similarity and picture¬ arrangement of Wechsler test and more perseveration error in Bender Gestalt test.

despite the maintain in social judgment, the RRMS patients indicate significant cognitive vandalism than normal individuals in abstract reasoning, social skill non-verbal and behavioral inhibition. In order to, cognitive behavioral therapy has been effective in cognitive restructuring, correction for cognitive distortion and behavioral techniques education is necessary to the mental health promotion of these patients