The function of left inferior / superior parietal lobule in Chinese character processing- a TMS study

• Main Authors: Yu-jen Chuang, 莊宇仁
• Other Authors: Chi-Hung Juan
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/67721196602668269621

碩士 === 國立中央大學 === 認知與神經科學研究所 === 97 === Four experiments were carried out to examine the functional roles of left inferior/superior parietal lobule in Chinese phonological processing with Transcranial Magnetic Stimulation (TMS) and the manipulation of the regularity of Chinese regularity. Previous studies have demonstrated that naming irregular Chinese character (i.e.: the pronunciation of phonological radical is different from the whole character) takes longer response time than naming the regular characters (phonological radical share the same pronunciation with whole character). We expected that the TMS would change the pattern of regularity effect. Experiments 1, 2, 3 were naming tasks and TMS applied over inferior/superior parietal lobule. Several TMS protocols were applied across the experiments. The regularity effects of Chinese characters were all observed across the exps. However, the overall reaction times of characters- naming in IPL TMS were slower than SPL TMS. In experiment 4, we used an adaptation paradigm to explore the Chinese phonological processing. The result showed that the regularity of task-unrelated stimulus affected the performance in regularity judgment task. The preliminary results suggest that the function of IPL and SPL in the processing of the Chinese characters are not identical. The regularity effects were modified in the adaptation paradigm but not in the naming task. Our results suggest that the adaptation task with TMS can possibly further discriminate the functions of IPL and SPL in Chinese character processing (Cattaneo et al., 2009 ).