Cardiovascular Business October 31, 2023
Researchers from Google have introduced a new approach for cardiac monitoring that relies on the active noise canceling (ANC) technology found in headphones and earbuds.
The technique, audioplethysmography (APG), can monitor a user’s heart rate and other physiological signals using ANC headphones—and it requires no additional sensors or battery power. A low intensity ultrasound transmitting wave is sent using the speakers placed inside the patient’s ear, and then it bounces back to be received by the on-board feedback microphones that provide the ANC technology.
This pulse-like wave synchronizes with the user’s heartbeat, the researchers explained.
“The auditory canal receives its blood supply from the arteria auricularis profunda, also known as the deep ear artery,” according to a blog post written...
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