The Molecule of More: How a Single Chemical in Your Brain Drives Love, Sex, and Creativity―and Will Determine the Fate of the Human Race

by Daniel Z. Lieberman

If something blocks a receptor, such as an antipsychotic medication, then the neurotransmitter (in this case, dopamine) can’t get at it, and it can’t communicate its signal. It’s like putting a piece of tape over a keyhole.