Re: Heartbeat Monitor/Detector
- From: D from BC <myrealaddress@xxxxxxxxx>
- Date: Wed, 31 Jan 2007 22:20:37 GMT
On Wed, 31 Jan 2007 20:45:23 GMT, Jan Panteltje
<pNaonStpealmtje@xxxxxxxxx> wrote:
On a sunny day (Wed, 31 Jan 2007 20:14:11 GMT) it happened D from BC
<myrealaddress@xxxxxxxxx> wrote in
<nss1s2leabt9a8rga2amga5op651ia3pks@xxxxxxx>:
You must have really strong brain waves ;-)
It's from too much lossy thinking.. My brain waves are so strong that
my head overheats from I^2*R losses. I might need to put heat sink on
my head.. :)
I didn't mean the electrodes go on the head but across the heart to
pick up the brain trigger signal. I don't know the dominant signal...
Could be the nerve to the heart.. Could be the heart itself or both.
D from BC
My recent understanding is that the heart triggers itself (an internal
feedback loop).
I dunno if there is a signal from the brain too, but things like adrealine do
affect the speed it runs.
But I am no doctor, so...
I believe that's right... I'm thinking about it more..
IIRC I saw a documentary in which heart cells under the microscope
beat..
Also...I've never heard of a head injury so severe that it stopped the
heart..
Without a google search..Maybe the heart still puts out a voltage
detectable on the skin.
What were all those chest wires for in those old hospital movies??
I did see that optical thingy on the finger on this weeks episode of
House..
Optical device was mentioned by other posters.
Guessing at it's construction:
Small view angle LED and phototransistor. Both parts can be SMD.
D from BC
.
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