Using elements from anatomy, physiology, psychology, and linguistics, Professor A. Tomatis delves deeply into the mysteries of the auditory system's function and its relationships with language speech on one hand, and with learning and communication with the world on the other.

What he discovers is a directly proportional dependency of these functions on the proper functionality of the ear, which is anatomically completed by the fourth month of gestation (when the ear is fully developed in the embryo) and subsequently feeds information and energy to the continuously developing brain.

Therefore, any dysfunction of the aforementioned processes is attributed by Tomatis to incomplete integration caused by poor development of auditory function due to various developmental factors.

[Excerpt from the text on the back cover of the edition]