The Developers of this programme   Johansen Sound Therapy was developed in Denmark by Dr. Kjeld Johansen, Director of the Baltic Dyslexia Research Laboratory from original work by Christian A. Volf. Johansen Sound Therapy is known as Hemisphere Specific Auditory Stimulation (HSAS) in the USA and Auditory Discrimination Therapy (ADT) in Scandinavia. The music was developed by Bent Peder Holbech is is designed to be pleasant and easy to listen to and is designed to stimulate nerve pathways into and inside the brain and this improves a person’s language processing abilities.    Click here to return to our Sound Therapy page