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.
Cognitive neuroscience
Hasan Sabouri Moghaddam; Mohammad Ali Nazari; Mohammad-Reza Abolghasemi Dehaghani; Akbar Zahedi
Abstract
Introduction: The purpose of this study was to investigate the role of temperamental differences in people's perceptual bias in the two dimensions of animacy (alive/non-alive) and expression of facial emotion (happy/disgust) in morphed images under ambiguous conditions. Method: Four groups, each group ...
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Introduction: The purpose of this study was to investigate the role of temperamental differences in people's perceptual bias in the two dimensions of animacy (alive/non-alive) and expression of facial emotion (happy/disgust) in morphed images under ambiguous conditions. Method: Four groups, each group consisting of 20 people aged 22-35, with emotional temperament of high and low activation and high and low inhibition, were selected based on Affective and Emotional Composite Temperament (AFECT) scale. Under the same conditions, they performed the task of morphed images in two dimensions of emotion and animacy. The findings were analyzed by t-test and Kruskal-Wallis in SPSS software version 26. Findings: High vs. low activation and high vs. low inhibition temperamental groups are biased in the perception of morphed images with emotional expressions of disgust/happiness but not in animacy. Conclusion: Temperament plays a role in perception of the morphed images with emotional expression of happiness/disgust, but it does not in the animacy dimension.