All diagrams in synapses and receptor signalling
Receptors and intracellular response
Receptor coupling is a starting point, not a complete prediction. A receptor family cannot be labelled universally good or bad for attention.
Receptors and intracellular response
Scoped educational mechanism
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The dopamine receptor nomenclature divides receptors into D1-like and D2-like families with different canonical G-protein coupling. Noradrenaline receptor families also differ. Coupling affects intracellular signals such as cAMP but does not uniquely determine firing, circuit activity or behaviour. Location, concentration, timing, cell type and other signalling pathways change the outcome. The diagram provides a simplified receptor reference, not an individual drug-response prediction.
What the diagram shows
The dopamine receptor nomenclature divides receptors into D1-like and D2-like families with different canonical G-protein coupling. Noradrenaline receptor families also differ. Coupling affects intracellular signals such as cAMP but does not uniquely determine firing, circuit activity or behaviour. Location, concentration, timing, cell type and other signalling pathways change the outcome. The diagram provides a simplified receptor reference, not an individual drug-response prediction.