TA group of 22 patients suffering from Menière’s disease were examined by electrocochleo-graphy. Tor the standard audiometric frequencies of 500 Hz and higher, the electrocochleographic and psycho-acoustic data arc compared with reference to the threshold values and loudness recruitment. The results of electrocochleography performed with amplitude-modulated stimuli suggest a physiological basis for the SISI test. A steep slope of the input-output curves is indicative for positive recruitment, according to the ABLB test and high SISI scores. The negative summating potential value, although very pronounced with respect to AP amplitude, is almost equal to the values found in normal hearing and distinctly larger than the –SP amplitude observed in high-frequency sensorineural hearing loss. This is discussed with respect to the differentiation of these two types of hearing loss, both with recruitment. The normal aspect of the amplitude-latency scattergram makes hair-cell lesions unlikely, which means that –at least in early Menière cases–the recruitment phenomenon cannot be explained on this basis. An alternative recruitment mechanism, based on a biased diode analogue, is proposed and discussed.