Brain stem evoked potentials were recorded by conventional scalp electrodes in infants (3 weeks to 3 years of age) and adults. The latency of one of the major response components (wave V) is shown to be a function both of click intensity and the age of the subject; this latency at a given signal strength shortens postnatally to reach the adult value (about 6 msec) by 12 to 18 months of age. The demonstrated reliability and limited variability of these brain stem electrophysiological responses provide the basis for an optimistic estimate of their usefulness as an objective method for assessing hearing in infants and adults.
Hecox K, Galambos R. Brain Stem Auditory Evoked Responses in Human Infants and Adults. Arch Otolaryngol. 1974;99(1):30–33. doi:10.1001/archotol.1974.00780030034006
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