TY - GEN
T1 - Investigation of neuronal substrates for language processing, using word priming
AU - Li, Chunlin
AU - Wu, Jinglong
AU - Kusahara, Hirosi
PY - 2009
Y1 - 2009
N2 - We investigated changes in the behavioral performance and brain activities associated with word priming in a Word Stem Completion (WSC) task in Japanese. In the behavioral results, we found obvious facilitatory effects in subject's performance. The percentage of correct answers in word non priming (P/N) condition was 94%, while the percentage of correct answers in word priming P/Y-condition was 100%. Averaged reaction time in word P/N- condition was 1501ms, while that of word P/N-condition was 978ms and 3106ms in non word P/Y-condition respectively. In the fMRI experiment, the same tasks were performed by the block-design experimental paradigm without any overt response in MRI scanner. As the fMRI results, we found the activations in the bilateral middle and inferior frontal gyrus with right hemispheric prevalence, the superior and inferior parietal gyrus, and the supplementary motor area. The prefrontal-parietal network observed in our study is consistent with the activated areas in word stem task in English. These results suggested that the facilitatory effects observed in WSC-test include implicit memory access and the induced attention after successful retrieval.
AB - We investigated changes in the behavioral performance and brain activities associated with word priming in a Word Stem Completion (WSC) task in Japanese. In the behavioral results, we found obvious facilitatory effects in subject's performance. The percentage of correct answers in word non priming (P/N) condition was 94%, while the percentage of correct answers in word priming P/Y-condition was 100%. Averaged reaction time in word P/N- condition was 1501ms, while that of word P/N-condition was 978ms and 3106ms in non word P/Y-condition respectively. In the fMRI experiment, the same tasks were performed by the block-design experimental paradigm without any overt response in MRI scanner. As the fMRI results, we found the activations in the bilateral middle and inferior frontal gyrus with right hemispheric prevalence, the superior and inferior parietal gyrus, and the supplementary motor area. The prefrontal-parietal network observed in our study is consistent with the activated areas in word stem task in English. These results suggested that the facilitatory effects observed in WSC-test include implicit memory access and the induced attention after successful retrieval.
KW - Human memory system
KW - Word priming
KW - fMRI
UR - http://www.scopus.com/inward/record.url?scp=77449161544&partnerID=8YFLogxK
U2 - 10.1109/ICMA.2009.5246099
DO - 10.1109/ICMA.2009.5246099
M3 - Conference contribution
AN - SCOPUS:77449161544
SN - 9781424426935
T3 - 2009 IEEE International Conference on Mechatronics and Automation, ICMA 2009
SP - 152
EP - 157
BT - 2009 IEEE International Conference on Mechatronics and Automation, ICMA 2009
T2 - 2009 IEEE International Conference on Mechatronics and Automation, ICMA 2009
Y2 - 9 August 2009 through 12 August 2009
ER -