Spatial unmasking and binaural advantage for children with normal hearing, a cochlear implant and a hearing aid, and bilateral implants

Audiol Neurootol. 2007;12(5):295-306. doi: 10.1159/000103210. Epub 2007 May 23.


The aims of this study were to: (1) determine if spatial unmasking existed and differed for children with normal hearing, a hearing aid and a cochlear implant (CIHA), and bilateral implants (BICI); (2) determine if binaural advantage and headshadow effect differed between children with CIHA and BICI. Results indicated that most of the CIHA and BICI children demonstrated spatial unmasking, though to a lesser degree than children with normal hearing. Results also indicated that the children with BICI demonstrated greater headshadow effect than those with CIHA. The CIHA and BICI children also differed in binaural advantage, which could be due to the differences in headshadow effect and in detection abilities with the hearing aid versus the second implant.

MeSH terms

  • Auditory Threshold / physiology
  • Child
  • Cochlear Implants*
  • Functional Laterality
  • Hearing / physiology*
  • Hearing Aids*
  • Hearing Disorders / surgery
  • Hearing Disorders / therapy
  • Humans
  • Reference Values
  • Space Perception