Maybe not as useful but you can also detect pulse using a simple webcam and some software. That combined with speech might give some more insight. http://www.

Maybe not as useful but you can also detect pulse using a simple webcam and some software. That combined with speech might give some more insight. http://www.extremetech.com/extreme/149623-mit-releases-open-source-software-that-reveals-invisible-motion-and-detail-in-video http://www.extremetech.com/extreme/149623-mit-releases-open-... https://www.youtube.com/watch?v=3rWycBEHn3s https://www.youtube.com/watch?v=3rWycBEHn3s