Neural Patterns during Memory Encoding as a Source for the Effectiveness of Mnemonic Training

[Speaker] Pan, Yafeng:1
[Co-author] Hao, Ning:1, Liu, Ning:1, Li, Xianchun:1, Zhao, Yijie:1, Cheng, Xiaojun:1, Ku, Yixuan:1, Hu, Yi:1
1:East China Normal University (China (People's Republic of China))

Memory has been demonstrated to be improved by the mnemonic training. The intentionally targeted cognitive processes, however are not fully understood, making the mechanisms for the effectiveness of training unclear. In the present study, a group of children was trained to use a mnemonic method of encoding 2-digit groups into images pre-stored in memory. These children demonstrated performance improvement in the short-term memory task after 22-day training. After training, they showed central-frontal P200 (170-220 ms) and left-frontal theta (200-1000 ms) in encoding of even- vs. odd-position digits. Furthermore, the mnemonic-induced P200 effect convaried with memory improvement. These findings suggest that the enhanced memory can be explained by the changed neural patterns. Extending former findings that memory training brings on neurological changes, we propose that neural patterns during encoding offer a window into the targeted cognitive processes with the mnemonic using and further into the source of the effectiveness of training.
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