Laura O. Robertson, Au.D

Doctor of Audiology

(603) 528-7700 • Toll Free (800) 682-2338
Fax (603) 528-9623

211 South Main Street
Laconia, New Hampshire 03246


Anatomy of the Ear


The human ear has three sections: the Outer Ear, the Middle Ear, and the Inner Ear. These sections work together to send sound signals to the brain.

The Outer Ear consists of a large and visible flap of cartilage called the Auricle. The purpose of the Auricle is to collect sound and funnel it into the small opening at the bottom of the ear. This opening, called the Auditory Canal, directs sound down to the eardrum.

The Middle Ear begins at the eardrum. The sound hits the eardrum and causes it to vibrate. This vibration is transmitted to the bones in the Middle Ear known as the Malleus, Incus, and Stapes. The Malleus is directly attached to the eardrum on one side and to the Incus on the other. The Incus connects to the Stapes, which is responsible for sending the sound to the Inner Ear.

The Inner Ear contains "hair-like" fibers called cilia. These cilia are attached to a membrane which moves, like an ocean wave, in response to the vibration of the Stapes. As the membrane is moved, it activates the cilia for those frequencies which make up that particular sound. When the cilia are activated, an electrical signal is sent to the brain telling it which frequencies are being heard.

Exposure to loud noise will eventually cause the cilia within the Inner Ear to break off. Once broken, they cannot be repaired. When the cilia break off, the ear is no longer aware of the sounds that those cilia represent.

anatomy of the ear

"I have been impressed with the care and service I receive from Dr. Robertson at Audiology Specialists, LLC. I was recently told by my friends that it was very nice to no longer have to repeat themselves to me."

-Bruno Siniscalchi, Moultonboro, NH


211 South Main Street • Laconia, New Hampshire 03246

(603) 528-7700 • (800)

Website By FIREHORSE Creative LLC Concord NH