the National Natural Science Foundation of China (Grant Nos. 60472017 and 30670699);Ministry of Education of China (Grant No. NCET-06-0277);the Research Fund for the Doctoral Program of Higher Educa-tion (RFDP) (Grant No. 021010)
Although deactivation has been found frequently in former functional brain imaging researches, only recently has it become a focus of systematic study because of its not well understood physiological mechanism. Howeve...