Fusion and lateralization study with two binaural cochlear implant patients.

Psychophysical studies have been completed with two binaural cochlear implant patients. Results from a fusion and lateralization experiment with both patients are described. As found in an earlier study with the first binaural patient in Australia, the second patient also showed good sensitivity to interaural amplitude differences but poor sensitivity to interaural time delays when compared with normal-hearing subjects. The implications of this result are discussed.