Date:   1/4/2012 3:05:06 PM ( 16 mon ago)
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URL:   http://curezone.com/forums/fm.asp?i=1896643

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>- function generator

Yes, I have and use a couple of these. Hopefully, your is digital with a high resolution readout ( at least 5 digits ).

>- I am an engineer

Electrical? Biomedical?

We were taught in biomedical engineering to measure current through a small series resistor for best accuracy.

>- I am sure that the DMM is reading quite fine. This is because the current is consistent with the voltage

Again, The fact that you feel it, at the very minimum makes your readings suspect.

>- but why - just because you don't believe me???

Because it is far off from published data and also far from what I found with a group of individuals.

I do not take what I found to be absolute, but it at least agrees with what there is published in biomedical and physiological studies.

"Your body resistance varies greatly in different parts of your body. A value of 1500 ohms is commonly used as the resistance between major extremities of an average human body: hand to hand, or hand to foot. ... It’s important to remember that the 1500 ohms is just an average value. Body resistance varies from person to person and may often be LESS than 1500 ohms. When your skin is moist, your body resistance could be as low as 300 ohms." From: http://electronicstechnician.tpub.com/14086/css/14086_34.htm


An interesting paper on the subject relative to skin resistance for EKG's is at http://www.ncbi.nlm.nih.gov/pmc/articles/PMC503700/pdf/brheartj00406-0129.pdf.

 

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