The SISI test: a review. Part II.

This is the second of two papers reviewing the SISI test. In this paper we discuss modifications of SISI, and the effects of contralateral masking and tone decay. We also compare SISI to other psychoacoustic site of lesion tests and discuss the implications of the results obtained in SISI. The following conclusions are drawn: (1) SISI performed at high levels appears powerful in detecting retrocochlear impairments. (2) Contralateral masking is advisable when cross-hearing cues are present. The masking level should be minimized and a noise level 10 dB below the level of the contralaterilized tone provides sufficient masking. (3) SISI remains valid despite the presence of tone decay. (4) High SISI scores in cochlearly impaired listeners do not indicate improved auditory acuity.