Department of Physiology, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-Ku, Tokyo, 142-8555, Japan.
Dentsu Lab Tokyo, Dentsu Inc., Tokyo, Japan.
Sci Rep. 2023 Jan 17;13(1):920. doi: 10.1038/s41598-023-28158-2.
Change in body perception requires recalibration of various sensory inputs. However, it is less known how information other than sensations relates to the recalibration of body perception. Here, we focused on the relationship between respiration and cognition and investigated whether respiratory rhythms are related to the recalibration of hand perception. We built a visual feedback environment, in which a mannequin hand moved in conjunction with its own respiratory rhythm, and participants performed an experiment under conditions in congruency/incongruency for spatial and temporal factors. The temporal and spatial congruency between own respiratory rhythm and the mannequin hand markedly facilitated the phenomenon of hand ownership sense transfer to the mannequin hand, while incongruency had little effect on the change in hand ownership. The finding suggests that an internal model in the brain allows respiratory rhythms to be involved in the adaptation of the body's neural representations.
身体感知的变化需要对各种感觉输入进行重新校准。然而，人们对于除感觉以外的信息如何与身体感知的重新校准相关知之甚少。在这里，我们专注于呼吸和认知之间的关系，并研究了呼吸节律是否与手感知的重新校准有关。我们构建了一个视觉反馈环境，其中一个假手与自己的呼吸节律同步移动，参与者在空间和时间因素的一致/不一致条件下进行实验。自身呼吸节律与假手之间的时间和空间一致性显著促进了手所有权感向假手转移的现象，而不一致性对手所有权的变化几乎没有影响。这一发现表明，大脑中的内部模型允许呼吸节律参与身体神经表示的适应。
