Neuropsychology
Mehdi Rahim Zadeh; Mohammad Esmaieli; Sajjad Mohammad Yari
Abstract
Background and Aims: The purpose of this study was to compare the effect of a selected physical fitness with and without transcranial direct current stimulation (tDCS) on reaction time and shooting performance in officer students. The statistical population of the present study was all the students of ...
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Background and Aims: The purpose of this study was to compare the effect of a selected physical fitness with and without transcranial direct current stimulation (tDCS) on reaction time and shooting performance in officer students. The statistical population of the present study was all the students of Imam Ali University. Methods: Due to the type and purpose of the research, 36 students were randomly divided into 3 groups (physical fitness without TDCS (12), physical fitness with TDCS (12) and Sham (12)) as a sample of the research. The study included the pre-test and post-test steps. In the pre -test, the participants performed 10 pistol shootings and 20 efforts for each of the simple and selective reaction times and their performance was recorded. The training and stimulation period consisted of 10 sessions. The next step was similar to the pre -test and with a 24 -hour difference. The statistical method of variance analysis was used for recruitment. LSD follow-up test was used to compare couples. Findings: The results showed that physical fitness and transcranial direct current stimulation (TDCS) had a significant effect on simple and selective reaction time. Also, physical fitness with TDCS has a significant effect on shooting performance and accuracy. Conclusion According to the results of this study, it can be suggested that transcranial direct current stimulation (TDCS), which is a kind of brain stimulation, as a technique and complement to physical fitness exercises to enhance performance and cognitive-perceptual factors in military student programs Be used.
Neuropsychology
Mahdieh Rahmanian; Elham Lobnia
Abstract
Overcoming problems and solving them, and maintaining mental and physical health in life, is very important. By improving cognitive abilities and increasing the processing speed of the mind, it is possible to improve the quality and health of life throughout life. The main goal of this research is to ...
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Overcoming problems and solving them, and maintaining mental and physical health in life, is very important. By improving cognitive abilities and increasing the processing speed of the mind, it is possible to improve the quality and health of life throughout life. The main goal of this research is to investigate the effect of transcranial direct current electrical stimulation (tDCS) on cognitive flexibility, problem solving and brain processing speed in students. This research was conducted as a semi-experimental design with a pre-test and post-test and a one-month follow-up phase. In this research, 30 people were selected as a sample using the purposeful sampling method and they were randomly divided into two experimental and control groups. The tDCS test group was subjected to electrical stimulation during two weeks and in 10 sessions, with a current intensity of 2 milliamps and for 20 minutes. At first, after finishing the stimulation program, and also one month later, tests of cognitive flexibility, problem solving and brain processing speed were taken from both groups and the results were analyzed using covariance test with repeated measurements. Based on the obtained results, it was observed that the difference between the groups is significant and indicates a positive and significant effect of intracranial direct current stimulation on cognitive flexibility, problem solving and brain processing speed. Also, according to the one-month follow-up phase, the mentioned effects are stable.
Neuropsychology
ahmad alipour; rogayeh mohammadi
Abstract
Aim: Neuropathic pains are common complications of chronic diabetes that have a negative effect on patients' mood. The present study, however, was conducted with the aim of determining the pure and combined effect of M1 and F3 anodic tDCS on reducing psychological distress in type 2 diabetes patients ...
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Aim: Neuropathic pains are common complications of chronic diabetes that have a negative effect on patients' mood. The present study, however, was conducted with the aim of determining the pure and combined effect of M1 and F3 anodic tDCS on reducing psychological distress in type 2 diabetes patients with neuropathic pain. Method: The study is a four-group double-blind randomized clinical trial. The statistical population of the study was all patients aged 45 to 65 years with type 2 diabetes who were members of the Bonab Diabetes Association in the winter of 2021 and spring of 2022, identified by specialists as having neuropathic pain. The research sample was 48 people selected in a purposeful way and according to the inclusion and exclusion criteria. Then, the subjects were randomly assigned to 4 groups. Patients in 4 groups received their own interventions for 12 sessions, three times a week. The data collection tool was the 42-item depression, anxiety, and stress scale (DASS). Results: According to the results, the average psychological distress in the post-test, 1-month follow-up, and 3-month follow-up phases, compared to the pre-test phase, was significantly reduced. However, there was no difference in the mean psychological distress scores between the other phases (post-test, 1-month follow-up, 3-month follow-up). That is, even up to the 3-month follow-up phase, the effect of the interventions remained. Conclusion: Therefore, the application of transcranial direct current stimulation, considering its therapeutic potential, can be expanded in people with diabetes.
Majid Almasi; Mohammadreza Noroozi Homayoon; Ali Rezaei sharif
Abstract
Objective: The aim of this study was to determine the effectiveness of neurofeedback therapy and transcranial direct currect stimulation in improving cognitive dominance in children with ADHD. Method: The present study is a quasi-experimental study with pretest-posttest and control group. The statistical ...
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Objective: The aim of this study was to determine the effectiveness of neurofeedback therapy and transcranial direct currect stimulation in improving cognitive dominance in children with ADHD. Method: The present study is a quasi-experimental study with pretest-posttest and control group. The statistical population includes all children with attention deficit/ hyperactivity disorder in Ardabil in the academic year 1399-1400. The sample consisted of 33 children with attention deficit/ hyperactivity disorder who were selected by convenience sampling method and randomly assigned to two intervention groups and a control group(11 people in each group). The instruments of this study include WISC-IV intelligence test and the interventions of this study include 20 sessions of neurofeedback therapy and 10 sessions of transcranial direct currect stimulation. The data of this study were analyzed with SPSS software version 23. Results: The mean scores of cognitive dominance were measured twice, which showed that in the post-test, the mean scores in cognitive dominance increased and no change was observed in the control group. The results show that after controlling the effect of pretest on posttest to compare the scores of the cognitive dominance scale between the three groups at the error level(0.05) there is a significant difference. Conclusion: According to the sessions and results obtained, neurofeedback therapy and transcranial direct currect stimulation are effective in improving cognitive dominance; Therefore, it is recommended to use these treatments to improve cognitive dominance.
mosayeb Yaarmohammadi vasel; ahad ahadi; khosro rashid; rozita amani
Abstract
Aim: The purpose of this study was to evaluate the effect of Trancranial Direct Current Stimulation(TDCS) on reducing positive and negative symptoms in chronic schizophrenia. Method: The method of this study was quasi-experimental with ABA design. The statistical population was all people with chronic ...
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Aim: The purpose of this study was to evaluate the effect of Trancranial Direct Current Stimulation(TDCS) on reducing positive and negative symptoms in chronic schizophrenia. Method: The method of this study was quasi-experimental with ABA design. The statistical population was all people with chronic schizophrenia who were admitted to the Fouman Patient Psychiatric Treatment Center. Purposeful and accessible sampling method was used among which 4 people were selected randomly. To collect statistical data research of Positive and Negative Symptoms inventory and transcranial Direct Current Stimulation Instrument(TDCS) has been used. Findings: The results showed that anodic tDCS application on the left dorsolateral prefrontal cortex(DLPFC) had a positive effect on decreasing positive, negative, and depression symptoms in people with schizophrenia disorder. Conclusions: In general, it can be said that was effective transcranial Direct Current Stimulation(TDCS) in reducing the symptoms of schizophrenia, so this method can be used in the treatment of people with chronic schizophrenia disorder.
farzaneh pouladi; masood bagheri; ghasem askarizadeh
Abstract
Aim: Decision-making is part of the cognitive control that plays a key role in the evaluation of desires. The present study was performed to investigate the effects of tDCS on the left hemisphere DLPFC brain region in high-risk decision making and risk-taking. Method: The study was a single-blind experimental ...
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Aim: Decision-making is part of the cognitive control that plays a key role in the evaluation of desires. The present study was performed to investigate the effects of tDCS on the left hemisphere DLPFC brain region in high-risk decision making and risk-taking. Method: The study was a single-blind experimental study performed on 30 healthy adults. In this study, subjects were randomly divided into two experimental and sham groups. In the experimental group, anodal stimulation over the right hemisphere OFC and cathodal stimulation over the left DLPFC was performed at 2 mA. The tasks used were computer versions of Balloon Analogue Risk Task(BART) and Iowa Gambling Task(IGT) for evaluating high-risk decision making and risk-taking. Data were analyzed using a one-way ANCOVA test. Results: Results showed a significant difference between the experimental and control groups in the Bart test(P
yousef dehghani; nozhatozaman moradi
Abstract
Aim: Decision-making is part of the cognitive control that plays a key role in the evaluation of desires. The present study was performed to investigate the effects of tDCS on the left hemisphere DLPFC brain region in high-risk decision making and risk-taking. Method: The study was a single-blind experimental ...
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Aim: Decision-making is part of the cognitive control that plays a key role in the evaluation of desires. The present study was performed to investigate the effects of tDCS on the left hemisphere DLPFC brain region in high-risk decision making and risk-taking. Method: The study was a single-blind experimental study performed on 30 healthy adults. In this study, subjects were randomly divided into two experimental and sham groups. In the experimental group, anodal stimulation over the right hemisphere OFC and cathodal stimulation over the left DLPFC was performed at 2 mA. The tasks used were computer versions of Balloon Analogue Risk Task(BART) and Iowa Gambling Task(IGT) for evaluating high-risk decision making and risk-taking. Data were analyzed using a one-way ANCOVA test. Results: Results showed a significant difference between the experimental and control groups in the Bart test(P <0.05) and the impact of the intervention in reducing risky decision making, and also no significant difference between the two groups in the Iowa test(P <0.05). Conclusion: Based on the results, it can be said that tDCS anodic stimulation can be effective in reducing risky decision making.
Yousef Moghadas Tabrizi; Meysam Yavari Kateb; Shahnaz Shahrbanian
Abstract
Aim:The purpose of this study was to investigate the effects of one session of transcranial direct current stimulation (tDCS) on hand mental rotation (HMR) and visuo-spatial working memory (VSWM). Methods: The 54 right handed students of sport science at University of Tehran were selected and then were ...
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Aim:The purpose of this study was to investigate the effects of one session of transcranial direct current stimulation (tDCS) on hand mental rotation (HMR) and visuo-spatial working memory (VSWM). Methods: The 54 right handed students of sport science at University of Tehran were selected and then were randomly divided into two groups of anodal (N=27) and sham (N=27), and further were divided in two subgroups according to site of stimulation (F4 & P4) (total of four groups). Before and after the application of tDCS, participants completed the HMR Task and Corsi test (to study VSWM). Findings: Results of anodal group showed a significant difference between the pre-test and post-test in reaction time and accuracy of HMR, also reaction time and span of Corsi in both sites (F4 & P4) . Also, comparing the effects between two sites in HMR, revealed that subjects responded faster and more accurately in F4 than P4. But only in foreward Corsi test, response time was faster in F4than P4. Conclusion: According to the findings of the present study, both F4 and P4 sites could be used to improve motor imagery and visual-spatial memory while the F4 showed better result.
