Title
Calculating a Vagal Tone Index using Webcam Photoplethysmography
Abstract
We propose a method which allows Heart Rate Variability (HRV) and Respiratory Sinus Arrhythmia (RSA) to be measured via a webcam. HRV and RSA provide an index of vagal tone, the activity level of the vagus nerve, which has a multitude of uses as a psychiatric research tool. The proposed Modified Eulerian Video Magnification (MEVM) algorithm amplifies signals from a video within a cardiac frequency range. This signal is used to obtain cardiac phase magnitude over time and thus construct inter-beat interval series (IBI), which can be processed to identify HRV and RSA. Results obtained agree with the gold standard (ECG) to within 2.5%.
Year
DOI
Venue
2014
10.1145/2683405.2683446
IVCNZ
Keywords
Field
DocType
algorithms,photoplethysmography,heart rate,applications,experimentation,vagal tone,measurement,heart rate variability,biometrics,eulerian video magnification
Computer vision,Vagal tone,Pattern recognition,Photoplethysmogram,Heart rate variability,Computer science,Vagus nerve,Interval Series,Artificial intelligence,Magnification,Heart rate
Conference
Citations 
PageRank 
References 
1
0.37
3
Authors
2
Name
Order
Citations
PageRank
Alex Beatson184.56
Richard D. Green210.71