-----Original Message-----
From:   Bob Fehrenbach [SMTP:bfehrenb@EXECPC.COM]
Sent:   Thursday, April 02, 1998 8:05 PM
To:     PICLIST@MITVMA.MIT.EDU
Subject:        Re: Sensor for Pulse (Heart)

Werner Terreblanche <wterreb@PLESSEY.COM> wrote:
>        I can't remember the details but as far as I remember it worked
>something like this...  You have a normal visible red LED and an Infrared
>LED both shine through the earlobe (not pulsed, but with a constant current
>flowing through them).

[John Shreffler]  There was a story on one of the network magazine
shows last week about marriage counciling, in which the couple was
put into a special room and hooked up to a lot of sensing and recording
equipment to measure stress, etc as they talked about their problems.
One of the sensors was a thing clipped onto the ear lobe.