From 1949 to 1974, the field's dominant patterns focused on building noninvasive neurophysiological tools to chart how the auditory system encodes sound and how attention shapes processing. Emphasis fell on extracting reliable temporal dynamics via auditory evoked potentials, brainstem responses, and far-field measures, while addressing perceptual organization of sound and automatic cueing effects. This period unified cognitive and clinical aims through methodological standardization and cross-modal insights into attention and perception in audition.