A Comparison on EEG Activity during Dart Throw between Task and Ego Orientation
羅麗娟(Li-Chuan Lo)；洪聰敏(Tsung-Min Hung)
目標取向 ； 注意力 ； 腦波 ； 飛鏢 ； goal orientation ； attention ； EEG ； dart throw
|Volume or Term/Year and Month of Publication||
4期（2004 / 05 / 01）
81 - 102
This study investigated whether groups with different goal orientation revealed differences on brain activities. Participants (320 college students) completed a questionnaire that assessed their goal orientation and perceived dart throw ability. Compared with group medians, ten of ego (high ego/low task) and task (high task/low ego) goal orientation with low perceived ability were selected for this study. Through the skill practices at least two months, EEG data of 8 ego and 10 task goal orientation dart throw players were obtained during real-time performance, and the attention mode was analyzed to assess viability of the automatic and control modes as an underlying mechanism to explain the relationship between attention and sport performance. The EEG recorded from 5 areas (frontal, central, parietal, occipital, temporal) was segmented into four, 0.5 second each, epochs of the last 2 seconds prior to the initiation of dart throw. Cleaned EEG epochs were subjected to FFT and log transformed. Three frequency bands: alpha (8~12Hz), beta1 (13~20Hz), and beta 2(21~30Hz) were extracted and the significance level was set as α＜.05. Separate 2×4×5(group × time window × area) mixed designed ANOVAs were performed on each frequency band. Results showed there was no significance between groups on dart scores and 3 frequency bands. The finding in the current study showed that, despite goal orientation, both groups showed similar pattern in the behavior and the way that was characterized by an unstable temporal dynamics and a differentiated activation of brain area prior to the initiation of dart throw. It was suggested that this might result from the interaction between individual goal orientation and perceived goal state. Besides, the level of skill autonomization should be taken into account for current study.
社會科學 > 體育學