Sound localization. Part II: a clinical procedure.

Difficulty in localizing sound has been shown to be associated with severe unilateral hearing impairment, middle-ear conditions and lesions of the cerebello-pontine angle. This was in contrast to the performance of subjects with cochlear lesions and certain brain conditions who had mainly normal ability to localize sound. The investigation appeared to indicate that a sound localization test in the horizontal plane using low frequency stimuli may be a useful addition to the test battery employed in the differential diagnosis of cochlear and retrocochlear lesions involving the cerebello-pontine angle.