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Why is it important?
Inexpensive and easily embedded device for the measurement of blood flow. Has been adapted for surface skin placement and for vaginal recordings of blood volume pulse.
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This page is a summary of: A variable-threshold, variable-gain, infrared photoplethysmograph, Journal of Behavioral Assessment, June 1984, Springer Science + Business Media,
DOI: 10.1007/bf01350170.
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