The EEG Dynamic Reflects the Underlying Brain Cognitive Process During Optic Relational Reasoning

• Main Authors: Chou, Wen-Chi, 周文己
• Other Authors: She, Hsiao-Ching
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/xuyxqu

博士 === 國立交通大學 === 教育研究所 === 102 === This study employed the electroencephalography (EEG) to explore the brain dynamics with underlying cognitive process during optic relational reasoning. This study consisted of two research experiments. There are forty-one science major and forty-one non-science major undergraduate students were recruited to involve in the experiment 1, and there are sixty science major undergraduate students who have received the optic relational reasoning learning content in the experiment 1 were recruited to involve in the experiment 2. The first experiment explored the EEG dynamics, eye movement patterns and learning performance of science and non-science major students during the optic relational reasoning learning content. Results showed science major students significantly outperformed than non-science major students on their learning performance of pre-test, learning practice and post-test. The eye-movement patterns indicated the mean fixation duration within area of interest (AOI) was greater in science major students than that in non-science major students, regardless of picture or word area. In addition, the EEG data revealed the theta augmentation was greater in science major students than that in non-science major, regardless frontal, occipital parietal and temporal lobes. In addition, there is greater alpha suppression in occipital was observed in non-science major students compare to science major students. In summary, the science major students allocated greater mean fixation duration at the AOI and greater theta augmentation in the different brain areas contributed to their better learning performance. 　 The second experiment explored the EEG dynamics among six optic relational reasoning conditions which involved different level of relational reasoning ability. Results indicated students had the highest accuracy and the fastest mental model relational reasoning time in the single mirror condition, on contrary, students had the lowest accuracy and longest mental model relational reasoning time during the one mirror and one convex combination condition and convex with focal length. The greater alpha suppression was observed in the occipital during the visual information processing stage, and pronounced theta increase was found in anterior cingulate cortex (ACC) during the mental model relational reasoning stage and subjects’ response stage. In addition, the theta augmentation was lower on single mirror condition than others. During the mental model relation reasoning stage, the parietal alpha suppression was obvious earlier and we considered it is the time that students are performing mental model manipulation and mental rotation, and following parietal alpha increase might reflect the demands of other cognitive functions including image rebuilt, feature integration and confirmation that associated with the level of complexity at different optic relational reasoning conditions.