Showing 10 results for Transcranial
Amin Arkan, Fereydoon Yaryari,
Volume 2, Issue 2 (9-2014)
Abstract
Aim of this research was exploring effect of transcranial direct current stimulation (TDCS) on working memory (WM) in dorsolateral prefrontal cortex (DLPFC) region in healthy people.The method used in this research was experimental with random assignment and control group. The population was male students of Kharazmi university in range of 18 to 23 years old. Thirty participant undertook three experimental sessions in which they received 15 minutes of 2 mA anodal TDCS or sham TDCS. After and before stimulation participant performed n-back task to measure reaction time and correct answers. After analysis of covariance there was significant statistically changing in reaction time and correct answers.The results shows that anodal stimulation reduced reaction time and increased correct answers and it seems made enhance on working memory
Mr Reza Kazemi, Dr Ezatollah Ghadampur, Dr Reza Rsotami, Mrs Sanaz Khomami, Mr Mehdi Rezaee,
Volume 5, Issue 3 (12-2017)
Abstract
The aim of the present study was to investigate of the efficacy of bilateral repetitive transcranial magnetic stimulation on cognitive function in patients with bipolar depression. In a single-blind experimental trial, 20 patients with bipolar depression who had been referred to Atieh clinical neuroscience center were selected randomly from April to September 2015. The patients received bilateral repetitive transcranial magnetic stimulation on left dorsolateral prefrontal cortex (10Hz) and right dorsolateral prefrontal (1Hz) during 10 sessions. The subjects were evaluated through verbal fluency test, Rey Auditory-Verbal learning Test, Stroop Test, Wisconsin Card sorting Test, Beck depression inventory before and after the treatment. The data were analyzed by paired t test. Bilateral rTMS was caused to significant changes in executive function and verbal memory and depressive symptoms. No significant changes were observed in selective attention and verbal fluency (p>0/05). Bilateral repetitive transcranial magnetic stimulation is caused to significant improvement in cognitive symptoms and reduces the symptoms of depression in patients with bipolar depression.
Alireza Moradi, Mahboobeh Bagheri, Peyman Hassani Abharian,
Volume 6, Issue 4 (3-2019)
Abstract
The aim of this research was to determine the effectiveness of tDCS and cognitive rehabilitation of working memory and the combination of these two methods on speed of processing and symptoms of dyslexia on bilingual children. Research method; semi experimental (pre-test, post-test and control group). Research population included all of the bilingual children at both sex at the age of 7-11 in Tehran and Kahrizak cities. Available samples were selected through Wexler intelligent questionnaire and Nama dyslexia test scores, so that 40 dyslexic students (based on school diagnostic system) and situated randomly in 4 groups: a) intervention by tDCS brain stimulation, b) computational cognitive rehabilitation via working memory module of RehaCom, c) simultaneous intervention of computational cognitive rehabilitation and brain stimulation tDCS and d) control group. Nama and speed of processing (SDMT) tests have been performed on all of the four groups in pre-test and post-test in order to data collecting. Data analysis results using analysis of multi-variable covariance in SPSS-22 showed that mentioned interventions could have meaningful changes in speed of processing and in decreasing dyslexia symptoms. Post hoc test results also showed that combination method first of all and then brain stimulation method have been the most effectiveness, but the mere computational cognitive rehabilitation method has not been influenced on these two variables alone.
Azin Sarraj Khorrami, Vahid Nejati,
Volume 7, Issue 1 (10-2019)
Abstract
Children with ADHD symptoms prefer smaller and immediate gain rather than bigger and long-term ones. This problem would result in impulsive behaviors and decision making. The aim of this study was to show the effect of transcranial Direct Current Stimulation (tDCS) on DLPFC and VMPFC on Improvement of delay discounting in children with Attention Deficit and Hyperactivity Symptoms.In this study, 20 children with hyperactivity and attention deficit symptoms were selected by available sampling method and each of the subjects participated in three montages including anodal/cathodal tDCS on dorsolateral prefrontal cortex and ventral medial prefrontal cortex, the reversed montage, and sham stimulation condition and assessed by delay discounting task. The findings show that there is significant difference in the performance of the subjects in the delay discounting task which was performed on different stimulation positions p<0/05 and anodal stimulation of VMPFC significantly improved delay discounting.
Omid Hosseinpanahi, Mehdi Zemestani,
Volume 8, Issue 1 (10-2020)
Abstract
Autism Spectrum Disorders (ASDs) are developmental neurological disorders characterized by defects in social interactions, communication, and repetitive behaviors. This study attempted to examine the efficacy of anodal transcranial direct current stimulation (tDCS) over the left dorsolateral prefrontal cortex (DLPFC) on social skills in children with ASD.Thirty-two children with confirmed ASD diagnoses were randomly allocated into a tDCS treatment group or a control group. The tDCS treatment group underwent 10 sessions of anodal tDCS stimulation applied simultaneously over the left DLPFC (F3) area, whereas the control group underwent the same procedures but with the use of sham tDCS stimulation.Gilliam Autism Rating Scale (GARS) and Social Skills Rating System was used to measure the Social Skills in two pre-test and post-test stages. Finally, the data were analyzed by the SPSS software using repeated measures analysis.Results showed that anodal tDCS significantly increased social skills in the experimental group after treatment compared to the control group.
Babak Sasani, Soheil Moazami Goudarzi, Hosein Ebrahimi Moghadam,
Volume 8, Issue 2 (10-2020)
Abstract
The aim of the present study was to evaluate the effect of Transcranial electrical stimulation (tES) on the rate of drug abuse temptation among adult men with substance abuse disorder in Safadasht.To achieve this goal, a statistical population was used that included all adult men with substance abuse disorder in the Akhavan center located in Safadasht.The experimental research design is a pre-test post-test with a control group and an experimental group that the sample size of up to 30 people (15 people in the experimental group and 15 people in the control group) is available using sampling method. The number of meeting held was 10 meeting and was held once a week in the center. In this study, a material temptation questionnaire as well as Transcranial electrical stimulation was performed on the sample group. Multivariate analysis of covariance was (Mancova) used for statistical analysis. The findings showed that there is a significant difference between the mean of the temptation of drug abuse in adult men with impaired drug abuse disorder (p>0.01); Therefore, it could be concluded that there was a significant difference by eliminating the effect of pre-test scores between the propensity adjusted average of drug abuse according to group. According to the results, it seems that Transcranial electrical stimulation of the brain can reduce the symptoms of cravings in people with drug abuse. Therefore, addiction specialists are recommended to use transcranial electrical stimulation as an intervention method in the treatment of these people.
Mr Reza Mohammadzadeghan, Mr Abolfazl Farid, آقای Gholamreza Chalabianlu Hasratanlo, آقای Javad Mesrabadi,
Volume 10, Issue 2 (10-2022)
Abstract
This research aimed to compare the effectiveness of mindfulness-based socio-emotional learning program with/and without Transcranial Direct Current Stimulation on sustained attention and response inhibition in children with attention deficit/hyperactivity disorder. This research was a semi-experimental study with a pre-test and post-test design with a control group. The statistical population included all students aged 11 to 14 who referred to child and adolescent counseling centers in Khoy city in 2021-2022 year. 45 people with attention-deficit/hyperactivity disorder of the mixed type were selected from among those who refer to the treatment centers by the purposeful sampling method and randomly replaced in two experimental groups and one control group. The first experimental group received the mindfulness-based socio-emotional learning program combined with Transcranial Direct Current Stimulation and the second experimental group received the mindfulness-based socio-emotional learning program for 8 weeks, but the control group did not receive any intervention. All participants were measured before and after the training using continuous performance test and GO/NO-GO test. For data analysis, multivariate covariance analysis was used in SPSS program. Data analysis showed that mindfulness-based socio-emotional learning combined with Transcranial Direct Current Stimulation compared to the other two groups and mindfulness-based socio-emotional learning compared to the control group were more effective on sustained attention and response inhibition. According to the findings, it can be suggested that the mindfulness-based socio-emotional learning program combined with Transcranial Direct Current Stimulation is an effective intervention to improve the cognitive functions of children with attention deficit/hyperactivity disorder.
Moslem Kord, Jalil Fath Abadi, Shahriar Gharibzadeh, Reza Khosrowabadi,
Volume 10, Issue 3 (3-2023)
Abstract
This study aimed to comparison of the effect of Transcranial Direct Current Stimulation (tDCS) and Transcranial Random Noise Stimulation (tRNS) combined with cognitive training on working memory performance of people with attention deficit/hyperactivity disorder. For this purpose, 45 children with attention deficit hyperactivity disorder in zahedan city were purposefully selected as the research sample. Subjects were divided into three groups: tDCS, tRNS and placebo group. Subjects in the experimental groups received 5 sessions of electrical stimulation (tDCS and tRNS) with an interval of 24 hours between each session; placebo group also received fake stimulation (non-effective). At the same time, all subjects also received cognitive rehabilitation of working memory. All subjects were evaluated before and after the stimulation and one week after the stimulation using the N-back task and the Wechsler Digit span test. The data were analyzed using repeated measures analysis of variance. The results showed that in the tDCS group, there was a significant difference in most working memory components from the pre-test stage to the follow-up (p<0.001). In the tRNS group, a significant difference was found in the component of direct digit span and reverse digit span in the research stages. In the comparison between the two experimental groups, the effectiveness of the tDCS group was higher than that of the tRNS group. Also, no significant difference was found in most of the components between the tRNS and placebo groups (p>0.05). Overall, the results of this study show that tDCS was more effective than tRNS in working memory and this method can be used together with other treatments to improve the working memory of children with attention deficit/hyperactivity disorder.
Mrs Fatemeh Ehsan Poor, Dr Fatemeh Ghaemi, , Dr Javid Peymani,
Volume 11, Issue 2 (9-2023)
Abstract
The use of methamphetamine in the general population and university and high school students is more than 1%. Also, the proportion of people addicted to methamphetamine has increased among those who refer to drug addiction treatment centers in Iran, which causes many harms to its users; One of these damages is creating a disruption in resilience. The aim of the present study was to compare the effectiveness of Transcranial Direct Electrical Stimulation (tDCS) therapy with acceptance and commitment based therapy on the resilience of men addicted to methamphetamine. The research method is practical in terms of purpose and semi-experimental in terms of data collection method. The statistical population of this research included the statistical population of the present study including all methamphetamine addicts in one area of Tehran city in 1401 who had referred to one of the addiction treatment centers. According to the research design, a sample size of 45 people was selected by purposive sampling. (2001) and electrical stimulation of the brain from the skull of this instrument was performed as a pre-test-post-test. Based on the findings of the current research, it was determined that transcranial direct stimulation (tDCS) electrical therapy was more effective on the resilience of men addicted to methamphetamine, the therapy based on acceptance and commitment was effective on the resilience of men addicted to methamphetamine, and the therapy based on Acceptance and commitment compared to direct transcranial stimulation electrical therapy has been more effective on the resilience of men addicted to methamphetamine.
Arezoo Mojarrad, Esmaeil Sadri Damirchi, Ali Sheykholeslami, Ali Rezaei Sharif, Vahid Abbasi,
Volume 11, Issue 4 (3-2024)
Abstract
The purpose of this study was to compare the effectiveness of transcranial direct current stimulation (tDCS) and short-term cognitive rehabilitation protocol on Symptoms of hallucinations and delusions in the elderly with mild Alzheimer's disease. The research method was an extended experiment with two experimental groups and one control group, which was conducted using the pre-test and post-test method. The statistical population included all elderly people over 65 years of age with mild Alzheimer's who had referred to a neurologist in 1401, and among these people, 60 people were selected by available sampling and then randomly. They were assigned in two experimental groups and one control group (20 people in each group). Then, the independent variables of transcranial direct current stimulation (tDCS) for 10 sessions of 20 minutes once a week on an experimental group and a short-term cognitive rehabilitation program for 9 sessions (90 minutes each session) It was designed according to the documentary method and based on Luria's (1963) healthy function replacement approach, and after confirming the validity of the content by experts, it was applied to the second experimental group once a week, and no intervention was performed on the third group. After the end of the intervention, the post-test was conducted with an interval of one week on the experimental and control groups. After one month, the studied groups were followed up again. Neuropsychological Questionnaire (NPI) was used to collect data. The results showed that both methods improve hallucination symptoms in the elderly with mild Alzheimer's and there is no significant difference between the effectiveness of these two methods. while they had no significant effect on the delusion variable. Therefore, it can be concluded that both methods can be used to improve hallucinations in the elderly with mild Alzheimer's disease.
