If you want to talk about the effects of current flow through the human body you need to define all of the other factors.
AC or DC
Hz?
Path
Time
Voltage
Male or Female
Body weight
Body resistance (Determined by moisture level, contact area, and pressure)
The IEC did some resaerch at the U of IL back in the late 60's, they had volunteers willing to take electric shocks. From that some basic values were published.
A LV AC(60hZ) shock of an average weight (Was 140lbs in 1968) male for 1/2 second will cause
1mA - Sensation of shock (Like a 9V Battery on your tounge)
2-10mA - Mild shock not painful, still maintain muscle control
10-20mA - Loss of muscle control, AC causes muscles to contract, can cause you to clench down on the conductor and not be able to let go, the increased pressure causes body resistance to go down, so current goes up, time becomes a factor because fibrilation can occur at these levels if the duration is long enough, if not removed from circuit this can be a fatal shock. this is why most electricians are taught to touch things with the back of thier hand. (DC no let go currents are closer to 75mA)
20-50mA - Lungs collapse - causing victim to pass out due to lack of O2 many times
50-100mA - 5% chance to go into Ventricular Fibrilation
100-200mA - 95% chance to go into Ventricular Fibrilation
(Someone earlier said 100mA is the fatal current, if I had to pick 1 value to answer this question, it would be 100mA, however there are several other factors, it is not really a question that can be answered with a simple current level)
>200mA - I2R heating of the conductive parts of the body (circ and nervous system) are damaged, there are no degrees of electrical burns, all electrical burns are 3rd degree because the cook you from the inside out, nerves are also damaged causing permanant damage.
