Clinical “electrical response audiometry” on a general—purpose computer (IBM 1800)

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Abstract
A computer programme permitting the use of a general—purpose computer (IBM 1800) in evoked response audiometry has been developed. A DC coupling of the computer is obtained by digital parallel displacement of the sampling sweeps. EEG amplitudes (RMS) are calculated before and after stimulation. The V potentials in babies are facilitated by this DC coupling. In addition to the V potentials, a reduction in the EEG amplitude in response to sound indicates sound perception.