Investigating Auditory Processing in the Users of Auditory Brainstem and Cochlear Implants

Inclusion Criteria: * Hearing impaired adult and or child (above 2 years old) who uses ABIs or cochlear implants. * No diagnosis of any other communicative or cognitive disorder other than hearing impairment. The individual must be able to visit the lab in order to participate in behavioral and electrophysiological experiments. * Patients' implant device must have useable electrodes that do not result in uncomfortable or unpleasant non-auditory sensation. Exclusion Criteria: * Diagnosed cognitive or communicative disorders (other than hearing impairment) * Severe neurological disorders * No useable electrodes in their implants