But go ahead and thumb through your dict ionary and see how many more words it in dic ates have this useful root! 1  dictionary: tells how to âsayâ words. 2  addict : âspeaksâ heavily towards something. 3  predict : âsayâ beforehand. 4  contradict : âsayâ against.
Neurotransmitters: Exciting and Inhibiting. Gamma-Amino-Butyric-Acid, or GABA, is the chief inhibitory neurotransmitter in the human brain. Along with serotonin, dopamine, glutamate, glycine, histamine, and norepinephrine, among dozens of other neurotransmitters, GABA regulates brain function.eurotransmitters: Exciting and Inhibiting. Gamma-Amino-Butyric-Acid, or GABA, is the chief inhibitory neurotransmitter in the human brain. Along with serotonin, dopamine, glutamate, glycine, histamine, and norepinephrine, among dozens of other neurotransmitters, GABA regulates brain function.
A functional GABA B receptor is composed of two subunits that form a heterodimer. GABA binding to the GABA B receptor activates the trimeric G protein Gi/o (Campbell et al., 1993). The activated G Î± o subunit can inhibit voltage-gated Ca + + channels or activate K + channels.