词汇学习前后梭状回信号的变化特征

目的 根据脑激活体积和强度变化率,探讨梭状回在学习进程中的功能.方法 10名粤语大学生进行动词产生任务,采用功能磁共振采集脑活动图像,以反卷积处理个体数据,ANOVA统计组数据.结果 练习前有大量激活脑区.练习后,大部分脑区激活表现出程度不同的降低,梭状回激活消失.结论 学习导致脑区激活改变.梭状回在学习过程中是非特异性加工.

The Change Feature of the Signal of Fusiform before and after the Vocabulary Learning

Objective To explore the function of fusiform in learning process according to the change of its activation volume and intensity. Methods Ten Chinese normal university students with Guangdoug dialect performed the verb generation, fMRI was used to scan the activities of brain. Deconvolution and ANOVA were used to deal with the data of individuals and groups respectively. Results After practice, the activations of the most brain areas were weakened in different degree of great quantities along with practice and the activation offusiform disappeared. Conclusion Learning leads to the change of brain activation. The function of fusiform is not specific, but general neural activation during learning process.