利用毫米波雷达对不受限制的猕猴进行户外非接触式呼吸测量。

IF 2 3区 生物学 Q1 ZOOLOGY
Toshiki Minami, Daisuke Sanematsu, Itsuki Iwata, Takuya Sakamoto, Masako Myowa
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引用次数: 0

摘要

呼吸是一种宝贵的信号,有助于实时观测生理动态。近年来,非接触式测量技术在捕捉自然环境中的生理活动方面取得了长足的进步。预计这种技术不仅适用于人类,也适用于非人灵长类动物。目前,非人类动物的主要非接触式测量方法是通过皮肤颜色的微妙变化来测量生命体征。然而,当测量身体被毛发覆盖的部位或在阳光不稳定的室外环境中工作时,这种方法就会受到限制。为了克服这一问题,我们将重点放在使用毫米波雷达进行非接触式呼吸测量上。毫米波雷达系统采用毫米波,可穿透动物皮毛,估算呼吸引起的身体周期性运动,对阳光干扰的敏感性极低。因此,这种方法具有在自然和户外环境中进行非接触式生命测量的潜力。在这项研究中,我们验证了毫米波雷达捕捉户外饲养猕猴呼吸的方法。雷达位于圈养围栏外,与目标保持大于 5 米的距离。毫米波被发射到目标,反射波被用来估计与呼吸有关的皮肤表面位移。结果显示,皮肤表面有周期性位移,估计的呼吸频率在报告的猕猴呼吸频率范围内。这些结果表明,毫米波雷达可用于户外生活猕猴的非接触式呼吸监测,而无需麻醉或固定。非接触式生命测量技术的不断进步将有助于了解灵长类动物在日常生活中的心理和生理动态。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Outdoor noncontact respiratory measurements of unrestricted rhesus macaques (Macaca mulatta) using millimeter-wave radar

Outdoor noncontact respiratory measurements of unrestricted rhesus macaques (Macaca mulatta) using millimeter-wave radar

Outdoor noncontact respiratory measurements of unrestricted rhesus macaques (Macaca mulatta) using millimeter-wave radar

Respiration is an invaluable signal that facilitates the real-time observation of physiological dynamics. In recent years, the advancement of noncontact measurement technology has gained momentum in capturing physiological activities in natural settings. This technology is anticipated to be found not only in humans but also in nonhuman primates. Currently, the predominant noncontact approach for nonhuman animals involves measuring vital signs through subtle variations in skin color. However, this approach is limited when addressing areas of the body covered with hair or when working in outdoor settings under fluctuating sunlight. To overcome this issue, we focused on noncontact respiratory measurements using millimeter-wave radar. Millimeter-wave radar systems, which employ millimeter waves that can penetrate animal fur and estimate respiration-derived periodic body motion, exhibit minimal susceptibility to sunlight interference. Thus, this method shows potential for conducting noncontact vital measurements in natural and outdoor settings. In this study, we validated a millimeter-wave radar methodology for capturing respiration in outdoor-housed rhesus macaques (Macaca mulatta). The radar was positioned beyond the captive enclosure and maintained at a distance >5 m from the target. Millimeter waves were transmitted to the target, and the reflected waves were used to estimate skin surface displacement associated with respiration. The results revealed periodic skin surface displacement, and the estimated respiratory rates weres within the reported range of respiratory rates for rhesus macaques. These results suggest the potential applicability of millimeter-wave radar for noncontact respiration monitoring in outdoor-living macaques without anesthesia or immobilization. The continued advancement of noncontact vital measurement technology will contribute to understanding primate mental and physical dynamics during their daily life.

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来源期刊
CiteScore
4.50
自引率
8.30%
发文量
103
审稿时长
4-8 weeks
期刊介绍: The objective of the American Journal of Primatology is to provide a forum for the exchange of ideas and findings among primatologists and to convey our increasing understanding of this order of animals to specialists and interested readers alike. Primatology is an unusual science in that its practitioners work in a wide variety of departments and institutions, live in countries throughout the world, and carry out a vast range of research procedures. Whether we are anthropologists, psychologists, biologists, or medical researchers, whether we live in Japan, Kenya, Brazil, or the United States, whether we conduct naturalistic observations in the field or experiments in the lab, we are united in our goal of better understanding primates. Our studies of nonhuman primates are of interest to scientists in many other disciplines ranging from entomology to sociology.
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