Tag: Synaptic transmission

Over 21 million Americans suffer from substance use disorders, a condition profoundly shaped by changes in brain chemistry. Understanding **what happens when drugs disrupt the brain's communication system** is critical for grasping the roots of addiction and its long-term neurological consequences.

Discovered in 1914, acetylcholine (ACh) was the very first neurotransmitter to be identified [1.5.3]. Understanding **what is the mechanism of action of acetylcholine?** is fundamental to grasping how our nervous system controls everything from muscle movement to memory [1.5.3, 1.5.5].