Bérard promoted AIT as a cure for clinical depression and suicidal tendencies, along with what he said were very positive results for dyslexia and autism, although there has been very little empirical evidence regarding this assertion.
[3] The U.S. Food and Drug Administration (FDA) has banned the Audiokinetron, the original device used to perform AIT, from importation into the U.S. due to lack of evidence of medical benefit.
[1] The original device for delivering this training, the Audiokinetron or Ears Education and Retraining System (EERS), was banned by the U.S. Food and Drug Administration from importation into the U.S. due to lack of evidence of medical benefit.
[3] However, the lack of proven benefit to clients has led the American Speech-Language-Hearing Association to warn its members that they may be found in violation of ASHA's Code of Ethics if they provide AIT services.
[7] A systematic review of randomized controlled trials of AIT found insufficient evidence to support its use; no significant adverse effects were reported.
[3] After reviewing the available research, the New York State Department of Health concluded that AIT's efficacy had not been shown, and recommended that it not be used to treat young children with autism.
Annabel Stehli's The Sound of a Miracle told the story of the author's daughter, an autistic girl who received AIT treatment from Bérard.
Filters to regulate sound which would alter or modified to focus on specific frequencies; an electronic gating mechanism enables the ear to attune itself automatically and spontaneously; provide a balance between left and right ears; and timing delay of sound reception between the bone and air conduction can be changed to slow down the processing of information internally and allow the individual to attend to incoming information.