Includes bibliographical references.

Ligand-gated ion channels -- Affinity and efficacy of orthosteric ligands at ligand-gated ion channels -- Competitive interactions between orthostheric ligands at ligand-gated ion channels -- Analysis of allosteric interactions at ligand-gated ion channels -- G protein-coupled receptors and G protein signaling -- Affinity and efficacy of the agonist-receptor-G-protein interaction -- Estimating affinity and efficacy by reverse-engineering and response-clamp analysis -- Analysis of agonism and inverse agonism in signaling pathways that exhibit constitutive activity -- Analysis of ligand bias in receptor signaling through different G protein pathways -- Competitive interactions between orthosteric ligands in functional assays on G protein-coupled receptors -- Analysis of allosterism in functional assays on G protein-coupled receptors -- Analysis of drug-receptor interactions using radioligand binding assays on G protein-coupled receptors.