posted by andy .
Many of the chemicals that affect the brain operate by
a. absoring neural impulses
b. imitating or cancelling the effects of neurotransmitters
c. changing the sodium balance in the synapse
d. duplicating the effect of the potassium in the nuclei
I searched Google under the key words "neurotransmitters" to get these possible sources:
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
I hope this helps. Thanks for asking.
A. Absorbibg neural impulses