Cognitive psycholog
Farzaneh Abdollahzadeh Bina; Hassan Sabouri Moghaddam; Abbas Bakhshipour Roudsari
Abstract
Introduction: The present study was conducted to determine the effectiveness of transcranial direct current stimulation on social-informational conformity, considering the moderating role of gender. Method: Two groups (male and female), each group consisting of 24 people aged 18-30, were selected from ...
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Introduction: The present study was conducted to determine the effectiveness of transcranial direct current stimulation on social-informational conformity, considering the moderating role of gender. Method: Two groups (male and female), each group consisting of 24 people aged 18-30, were selected from Tabriz University students' society with a non-random and available sampling method. The current research design was a semi-experimental type with a pre-test and a post-test. In the pre-test stage, the social-informational conformity computerized task was implemented. Then, two sessions (each, 20 minutes) of transcranial direct current stimulation were applied. In the post-test phase, the same social-informational conformity task was performed. Finally, the findings were analyzed with repeated measures variance analysis and covariance analysis in SPSS version 24 software. Findings: The amount of social-informational conformity increased in both groups after applying transcranial direct current stimulation, and gender did not moderate the effect of this stimulation. Conclusion: Transcranial direct current stimulation has the same effect on conformity in both men and women. Also, cathodal stimulation of the ventromedial prefrontal cortex significantly increases the tendency for social-informational conformity in women and men when the participants' initial decision is different from the majority. Since cathodal stimulation reduces neuronal firing, cortical excitability, and motor-evoked potentials, it is reasoned that the reduction of vmPFC stimulation enhances the conformity behavior in people.
Samira Hasanzadeh; Hossein Zare
Abstract
The present study aimed to examine the effectiveness of transcranial direct current stimulation in improving visual response control and everyday memory among patients with ischemic stroke. For this purpose, 20 patients with ischemic stroke (with an average age of 38 to 73 years) were selected by the ...
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The present study aimed to examine the effectiveness of transcranial direct current stimulation in improving visual response control and everyday memory among patients with ischemic stroke. For this purpose, 20 patients with ischemic stroke (with an average age of 38 to 73 years) were selected by the available sampling method then they were assigned randomly into two experimental and control groups. Cognitive assessment of patients, including pre-intervention, evaluation immediately after the intervention and three months after intervention using Sunderland everyday memory Questionnaire (1983) and IVA+Plus (2015) (Integrated Visual and Auditory Continuous Performance) Test was done. The experimental group received 15 sessions for 20 minutes with a current of 2 mA Transcranial direct current stimulation (TDCS) for four weeks, and the control group did not receive any intervention. Data were analyzed by Repeated Measure. According to the findings, treatment of transcranial direct current stimulation has had a positive effect on improving the cognitive functions such as everyday memory and visual response control of patients with ischemic stroke in the experimental group . also obtained these results at the follow-up stage, which was 3 months after the intervention. (p<0/05). Therefore, this study has provided evidence for the effectiveness of a transcranial direct current stimulation program (TDCS) on everyday memory and visual response control in patients with ischemic stroke, which can improve memory and visual response control in this category of patients and can have a positive effect on the cognitive performance of patients.
