Abstract
We have measured the auditory threshold on 250, 500, 1 000, 2 000 and 4 000 Hz in 52 hearing impaired infants aged 1 to 4 years with Suzuki's conditioned orientation reflex (C.O.R.) and the slow evoked potentials (E.R.A.) during Nembutal sleep. The threshold difference between the two techniques never exceeds ± 30 dB and 75% of the cases are within the ± 10 dB ranee. A statistical analvsis shows that neither the age of the subject nor the frequency and intensity of the stimulus exert any influence on the results obtained.