The detection of neurotransmitter receptor locations and distribution densities within the central nervous system and peripheral tissues is receiving intense attention within the neuroscience research community. Neurotransmitter receptors, which receive the chemical signals sent from one neuron to another, are critical links in a highly complex information-processing chain. Pinpointing receptor sites and systems is crucial for understanding neurological function as well as dysfunction. It is also essential for understanding how receptors process information when impacted by such substances as...