Effects of Time-Compressed Speech Training on Multiple Functional and Structural Neural Mechanisms Involving the Left Superior Temporal Gyrus

Overview

Journal Neural Plast

Specialty Neurology

Date 2018 Apr 21

PMID 29675038

Citations 5

Authors

Tsukasa Maruyama

Hikaru Takeuchi

Yasuyuki Taki

Kosuke Motoki

Hyeonjeong Jeong

Yuka Kotozaki

Seishu Nakagawa

Rui Nouchi

Kunio Iizuka

Ryoichi Yokoyama

Yuki Yamamoto

Sugiko Hanawa

Tsuyoshi Araki

Kohei Sakaki

Yukako Sasaki

Daniele Magistro

Ryuta Kawashima

Affiliations

Soon will be listed here.

Abstract

Time-compressed speech is an artificial form of rapidly presented speech. Training with time-compressed speech (TCSSL) in a second language leads to adaptation toward TCSSL. Here, we newly investigated the effects of 4 weeks of training with TCSSL on diverse cognitive functions and neural systems using the fractional amplitude of spontaneous low-frequency fluctuations (fALFF), resting-state functional connectivity (RSFC) with the left superior temporal gyrus (STG), fractional anisotropy (FA), and regional gray matter volume (rGMV) of young adults by magnetic resonance imaging. There were no significant differences in change of performance of measures of cognitive functions or second language skills after training with TCSSL compared with that of the active control group. However, compared with the active control group, training with TCSSL was associated with increased fALFF, RSFC, and FA and decreased rGMV involving areas in the left STG. These results lacked evidence of a far transfer effect of time-compressed speech training on a wide range of cognitive functions and second language skills in young adults. However, these results demonstrated effects of time-compressed speech training on gray and white matter structures as well as on resting-state intrinsic activity and connectivity involving the left STG, which plays a key role in listening comprehension.

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