Effects of training of shadowing and reading aloud of second language on working memory and neural systems

Hikaru Takeuchi, Tsukasa Maruyama, Yasuyuki Taki, Kosuke Motoki, Hyeonjeong Jeong, Yuka Kotozaki, Takamitsu Shinada, Seishu Nakagawa, Rui Nouchi, Kunio Iizuka, Ryoichi Yokoyama, Yuki Yamamoto, Sugiko Hanawa, Tsuyoshi Araki, Kohei Sakaki, Yukako Sasaki, Daniele Magistro, Ryuta Kawashima

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Shadowing and reading aloud both involve multiple complex cognitive processes, and both are considered effective methods for second-language learning. The working memory system, particularly the phonological loop, has been suggested to be involved in shadowing and reading aloud. The purpose of this study was to investigate the effects of a 4-week intensive adaptive training including shadowing and reading aloud of second language on working-memory capacity, regional gray matter volume (rGMV), and functional activation related to the n-back working-memory task in young adults. The results showed that compared with the training groups without speaking (listening to compressed speech and active control involving the second language), the training groups with speaking (shadowing and reading aloud) showed a tendency for greater test-retest increases in digit-span scores, and significantly greater test-retest decreases in N-back task reaction time (increase in working memory performance). Imaging analyses revealed compared with the active control group, shadowing group exhibited decreases in rGMV and brain activity during the working memory task (2-back task), in the left cerebellum and reading group exhibited decreases in them in the right anterior insula. These regions are parts of the phonological loop, suggesting the presence of training-induced neural plasticity in these neurocognitive mechanisms.

本文言語English
ページ(範囲)1253-1269
ページ数17
ジャーナルBrain Imaging and Behavior
15
3
DOI
出版ステータスPublished - 2021 6

ASJC Scopus subject areas

  • 放射線学、核医学およびイメージング
  • 神経学
  • 臨床神経学
  • 認知神経科学
  • 細胞および分子神経科学
  • 精神医学および精神衛生
  • 行動神経科学

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