Farzaneh Hatami; Farshid Tahmasbi; Ali Yousef pour
Abstract
Aim:The purpose of this study was to determine the effects of video and live observation on activation of mirror neurons in football keep- up skill. Metod:Twenty-four students (mean age: 17.66 0.816 years) who have taken part in Olympiads competition, voluntarily participated ad yoked into live ...
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Aim:The purpose of this study was to determine the effects of video and live observation on activation of mirror neurons in football keep- up skill. Metod:Twenty-four students (mean age: 17.66 0.816 years) who have taken part in Olympiads competition, voluntarily participated ad yoked into live and video observation. Participants’ brain waves were recorded by EEG in open eye resting and observing live and video observation conditions. Mu rhythm Suppression, as the mirror neuron activation, was calculated as a ratio of the alpha absolute power during observation of video and live models relative to the alpha absolute power in the baseline condition (rest) Findings:Results showed that there were no significant differences in mu rhythm suppression between live and video observation groups in C3, Cz and C4 brain areas. In addition, absolute alpha power was suppressed significantly in observation conditions compared to rest. Conclusion: Regarding the activation of mirror neurons in both live and video observation, our result suggested that in the case of limitation in the use of the live model, video model can be used in soccer keep- up skill.
FARZANE HATAMI; Farshid Tahmasbi; HASAN HADI
Volume 3, Issue 11 , March 2018, , Pages 115-130
Abstract
Introduction: The purpose of present study, was to examine the effects of internal and external focus of attention on EEG changes in darts throwing skill. Methods: 14 students of Tehran Shahid Rajaee Teacher Training University (6 female and 8 male; mean age: 23.13 years) voluntarily participated in ...
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Introduction: The purpose of present study, was to examine the effects of internal and external focus of attention on EEG changes in darts throwing skill. Methods: 14 students of Tehran Shahid Rajaee Teacher Training University (6 female and 8 male; mean age: 23.13 years) voluntarily participated in this study. Order of attentional strategy was counterbalanced across participants and they randomly divided into the two groups: one group is performed dart throwing internally, followed by external focus of attention, and the other use internal followed external focus of attention. Participants’ Brain Waves were recorded by EEG in three conditions, open eye resting and perform dart throw with internally and externally focus of attention and were transferred to quantitative data by Neuro-guide Software. Alpha and beta band cortical activity in central and parietal brain area were selected. Findings: Results of repeated measures ANOVA revealed that log of absolute power of alpha band in externally focus of attention condition in C3 and in internally and externally focus of attention conditions in P3 and P4 brain areas were significantly lower than rest condition while there were no significant differences between two internal and external focus of attention conditions. In addition, log of absolute power of beta in internally focus of attention condition in P4 was significantly greater than externally focus of attention condition. Increasing beta power in P4 in internal focus of attention indicates greater focus on body movements during performance, which supports the superiority of internal focus of attention strategy in beginners
Farzaneh Hatami; Farshid Tahmasbi; Elham Hatami Shahmir
Volume 3, Issue 8 , June 2017, , Pages 85-102
Abstract
Introduction: The purpose of present study was to examine the effects of action observation and motor imagery on mu rhythm suppression in basketball free throw shot. Method: 10 novice male students (mean age: 23.2±1.5 years) voluntarily participated in this study. The observation and imagery’ ...
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Introduction: The purpose of present study was to examine the effects of action observation and motor imagery on mu rhythm suppression in basketball free throw shot. Method: 10 novice male students (mean age: 23.2±1.5 years) voluntarily participated in this study. The observation and imagery’ order was counterbalanced. Participants’ Brain Waves were recorded by electroencephalograph in four conditions, open and closed eye resting, observing and imagery of free throw shot in external perspective. Mu rhythm Suppression was calculated as a ratio of the alpha power during observation and imagery relative to the alpha power in the baseline conditions (open and closed eyes rest). Findings: Results of ANOVA (2×3) with the within-subject factors of condition (Observation, Imagery) and brain area (C3,CZ,C4) relative to the resting period with open and closed eyes showed that only the main effect of the condition were significant (P ≥0.01), so that, there were significant differences between mu rhythm suppression in observation and imagery conditions. In other words, mu rhythm in observation condition was more significantly suppressed compared to the imagery condition (P ≥0.01), but the main effect of brain area and the interaction of both variables were not significant. Conclusion: Results of present study suggest that more mu rhythm suppression in action observation compared to imagery condition reflects more reactivity of mirror neurons to action observation. It appears that observation is more effective strategy in educational situation.
