What happens if you have a painful stimulus and you rub the area?
Rubbing stimulates A betas. (you can feel rubbing--going up the dorsal column) -->The stimulation of A beta stimulates the G cells-->(it sums all of its input--temporal summation, spacial summation, grand synaptic potential) its membrane potential starts moving up and if it exceed threshold it starts firing A.P.--> then it travels down its axon--> reduces the amt. of Ca that enters the axon terminal-->and reduces the amt. of glutamate or Substance P released--> decreases the firing the frequency of A. P. by that T cell.-->results in a decrease in pain intensity.