Repeatability and stability of photoplethysmography measurements of muscle blood flow in musculus orbicularis oculi
Visual discomfort is a common symptom among computer users (Helland, Horgen, Kvikstad, Garthus, & Aar(a)s, 2008) and may be related to increased muscle strain in the muscles surrounding the eye. During work situations where the eyes were stressed by excessive lighting and use of small font, electromyographic (EMG) response in m. orbicularis oculi was raised (Gowrisankaran, Sheedy, & Hayes, 2007; Niru, Sheedy, Hayes, & Yu-Chi, 2007). The function of m. orbicularis oculi is to mediate voluntary blinking and/or squinting of the eyes. Visual discomfort and increased muscle tension in m. orbicularis oculi during visually demanding work may be related to changes in muscle blood flow (Yasuda, Brechue, Fujita, Shirakawa, Sato, & Abe, 2009). The aims of this study were to evaluate validity and reliability of muscle blood flow measurements in m. orbicularis oculi using a new application of photoplethysmography (PPG).
Photoplethysmography muscle blood flow repeatability orbicularis oculi
Hanne-Mari Schi(o)tz Thorud Magne Helland Magne Helland Gunnar Horgen Arne Aar(a)s Tor Martin Kvikstad Lars G(o)ran Lindberg
Department of Optometry and Visual Science, Buskerud University College, Kongsberg, Norway Department of Biomedical Engineering, Link(o)ping University, Link(o)ping, Sweden
国际会议
17th World Congress on Ergonomics(第十七届国际人类工效学大会)
北京
英文
1-3
2009-08-09（万方平台首次上网日期，不代表论文的发表时间）