The period consolidated a cholinergic neurohumoral paradigm in neurobiology, emphasizing acetylcholine as a central mediator across brain and peripheral tissues. Researchers pursued integrated mapping, histological visualization, and biochemical characterization to connect cellular pathology with disease processes, while spanning epilepsy, neurodegeneration, and neuromuscular function. Methodological innovation and cross-disciplinary collaboration unified studies around acetylcholine signaling as a unifying mechanism in nervous system function.