Measuring millivolts between my fingertips?

My multimeter is consistently showing AT LEAST 10mV voltage between my index fingers’ tips.
Is this reading an actual voltage, I mean, if I let go of the leads it goes to 0, I tap my index fingers on and it jumps to tens of millivolts, fluctuating and just now it stabilized to around 15mV.

…The question is, is the meter actually this precise and how off are these readings?
Where can I actually find info on voltage measurements from fingertips? Surely they have voltage, it’s heard clearly if you tap an amp’s aux connection, y’know…

Also, feel free to suggest me anything interesting to measure with a multimeter, I just got one and I need practice.

I got around 1.2V from the preamp output of my Schiit Vali 2 hp amp (I put the leads against connected RCAs’ prongs). Is this about right?

Okay so I put the leads against my tongue and it stays at about -80mV. Can someone please explain?

Okay, I’ve kept doing these experiments at this voltage sensitivity setting and it shows consistent results - the millivolts measured from different parts of the human body really do show a consistency (somewhat…).
There is a lot of fluctuation, sure, but when I keep the leads in place steadily, the value does stay within a fairly narrow margin. And again, it drops to 0 when I remove the leads, so it’s an actual measurement I have to believe. I’m not sure about how correct it is though.

Anything on this subject? Doctor Jerry Tennant is doing a lot with this kind of thing…

I know what that means, but I can’t tell you that here… @Elk will silence my “butt” in a heartbeat… :joy: :rofl:

Is it a secretive Nikola Tesla document that any electricity firm (and any council) would not like to be released to the public?? Free electricity?
Maybe even shared electric fields for humans? That would be neat wouldn’t it. Though if you ask me, it’s not hard or impossible to, hmm, simulate such a thing. I personally have experiences of “telepathic” EM field closure, that’s what I’d call it. It works not over long distances to cause actional communication, but at very close distance it can do wonders, therapeutically I mean. Anyway…

Really, haven’t any of you ever tried measuring millivolts from your fingertips?

If it’s a high impedance digital voltmeter then it will be pickup of mains EMF - stand under a overhead power line, it might be higher :slight_smile:

It does show very small fluctuations even when the leads are in free air. But what explains the consistent measurements from the skin?

It’s normal to have a few mV when you hold two ends of a voltage meter. Try grounding yourself then doing it, the voltage will go away. Easiest way to do this is stand barefoot in grass.

Our bodies are rife with electrical activity. You are measuring difference in voltage potential between your fingertips; there is an electron imbalance between the electrodes.

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Yes, obviously. I’m just wondering how accurate these readings might be.
Just now I got 50mV between my index fingers. It’s hard to Google the subject and find actual precise measurements because I don’t really know if this has been studied that much. (What field even studies this?)

I am sorry to have provided you with obvious information.

I suggest you look up electrodermal activity.

Best of luck finding the information you seek.


A fairly small shock will alter an anomalous Heart Beat (50W/s for less than .02s for cardioversion, 200-400 for defibrillation) The electrical potential of nerve cells in the heart are -20-50 mV so a small voltage at the fingertips where a pulse oximeter reads is expected

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“I suggest you look up electrodermal activity.”
“electrodermal activity”

THANKS. Just that. Apparently what I’ve been measuring is called galvanic skin potential (GSP).
Now this is just great, now I’ll have to get more precise tools for dermal measurements.
This has been a thing for decades in psychological research apparently… Well, no wonder, we work on electricity.

Since there’s relatively a lot of engineer-type people here with expensive electronics gear,

I’d ask: If you have a very precise multimeter, what does it read in mV from your: fingertips, tongue?

Sigh. I finally cracked. With voltmeter between 2 adjacent fingers 4mV. Using a scope between the same 2 fingers the DC offset is about the same, but it is actually a mains frequency sine wave. Make of that what you will.