Studies revealed that in the proper dosage, taken pure extract of Bacopa Monieri could significantly improve not only memory acquisition and recall, but could even Synapse XT verbal learning as well. HOW DOES Synapse XT IMPROVE BRAIN FUNCTION? The predominant effect that Synapse XT has on the brain is increasing the availability of GABA (gamma-Aminobutyric acid). GABA is the primary inhibitory neurotransmitter in the central nervous system of mammals. This neurotransmitter aids in the orchestration of ion pump maturation. This in turn speeds up the development of interneurons of the hippocampus. The hippocampus is responsible for emotional stability, memory and spatial navigation.