A small number of disk-shaped electrodes are placed on the head and on the earlobes and a set of insert earphones is placed in the openings to the ear canals. The client is asked to rest and be still in a comfortable chair in a darkened room while sounds are presented through the earphones. The electrodes carry electrical signals from the head and earlobes to a computer that is used to extract the response of the hearing nerve and auditory pathways.
Non-Sedated Assessment for Hearing Sensitivity
The clinician presents sounds at different intensity levels to determine the lowest intensity that produces an electrical response. That level provides an estimation of hearing sensitivity.
Non-Sedated Assessment of Auditory Pathways
A moderately loud set of sounds is presented to each ear individually. The clinician examines the electrical activity of the auditory system to evaluate how sound information is conducted to the brain.