Although bilateral BAHS application was reported to be more beneficial than unilateral applications in some survey studies, in others, no statistically significant difference was observed.
However, when these two issues are excluded, we can conclude that unilateral BAHS application provided sufficient stimulus to prevent neural deprivation in the contralateral ear.
As binaural BAHS use has been assessed most often using questionnaires and inventories, (1,3-5) and the factors assessed in the literature have usually been discrimination with noise and localization issues, our study could not be compared with a large study group.
Bilateral BAHS is important for localization and discrimination in the context of noise.
At the effective masking level, a significant difference was not observed between the contralateral ear and the BAHS ear without overmasking.