Honma Motoyasu, Masaoka Yuri, Iizuka Natsuko, Wada Sayaka, Kamimura Sawa, Yoshikawa Akira, Moriya Rika, Kamijo Shotaro, Izumizaki Masahiko
Department of Physiology, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan.
Sci Rep. 2022 Jan 31;12(1):1589. doi: 10.1038/s41598-022-05605-0.
Electronic devices have become an indispensable part of our daily lives, while their negative aspects have been reported. One disadvantage is that reading comprehension is reduced when reading from an electronic device; the cause of this deficit in performance is unclear. In this study, we investigated the cause for comprehension decline when reading on a smartphone by simultaneously measuring respiration and brain activity during reading in 34 healthy individuals. We found that, compared to reading on a paper medium, reading on a smartphone elicits fewer sighs, promotes brain overactivity in the prefrontal cortex, and results in reduced comprehension. Furthermore, reading on a smartphone affected sigh frequency but not normal breathing, suggesting that normal breathing and sigh generation are mediated by pathways differentially influenced by the visual environment. A path analysis suggests that the interactive relationship between sigh inhibition and overactivity in the prefrontal cortex causes comprehension decline. These findings provide new insight into the respiration-mediated mechanisms of cognitive function.
电子设备已成为我们日常生活中不可或缺的一部分，但其负面影响也有报道。一个缺点是，从电子设备上阅读时阅读理解能力会下降；这种表现缺陷的原因尚不清楚。在本研究中，我们通过同时测量34名健康个体阅读时的呼吸和大脑活动，调查了在智能手机上阅读时理解能力下降的原因。我们发现，与在纸质媒介上阅读相比，在智能手机上阅读会引发更少的叹息，促进前额叶皮质的大脑过度活跃，并导致理解能力下降。此外，在智能手机上阅读会影响叹息频率，但不影响正常呼吸，这表明正常呼吸和叹息的产生是由受视觉环境不同影响的通路介导的。路径分析表明，叹息抑制与前额叶皮质过度活跃之间的交互关系会导致理解能力下降。这些发现为认知功能的呼吸介导机制提供了新的见解。
