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- Title
A Photoelectric Ear-Device for In-Flight Recording of Heart Rate.
- Authors
Willis, D. M.
- Abstract
A photoelectric pulse detector is described which can easily be adapted for use on the ear äs a heart rate sensor. The ear provides a low-movement, low-artifact bodily member which seems ideal for plethysmographic techniques of heart rate detection, while allowing the subject to perform tasks with his hands. The vasomotor responses in the ear are similar to those of the hand and fingers. Heart rate records have been obtained from 27 subjects; 20 in the laboratory, six in a Boeing 720 flight Simulator, and two records in-flight from the same subject using light aircraft. All recordings have been satisfactory for the visual counting of heart rate. The System is considered to be superior to conventional ECG techniques in the saving of time and in the elimination of such nuisances äs electrodes, pastes, wire leads, etc. Artifacts are reduced, electrical grounding problems are eliminated and since there are no electrical connections to the subject, there are no shock hazards.
- Publication
Biomedical Engineering / Biomedizinische Technik, 1974, Vol 19, Issue 1, p5
- ISSN
0013-5585
- Publication type
Article
- DOI
10.1515/bmte.1974.19.1.5