Project:Nasal flow data logger
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During a project to study hemispheric dominance, and it's relation to cognitive performance I was using a medical polysomnography device. However these were very expensive and collecting unnecessary data. I decided to build a device to measure the relative left/right nasal flow using a cheap arduino and differential air pressure component.
original product;
http://www.medwow.com/med/polysomnography/embla/embletta_x100/56737.model-spec
something similar
http://www.embla.com/files/embla//downloads/newbrochures/1em442_emblettax100_32410lo.pdf