Glossary Terms: B

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Background / Ambient Noise
Environmental noise that competes with the main speech signal.

Biological system that enables individuals to know where their bodies are in the environment and to maintain a desired position. Normal balance depends on information from the labyrinth in the inner ear, from other senses such as sight and touch, and from muscle

Balance Disorder
Disruption in the labyrinth, the inner ear organ that controls the balance system, which allows individuals to know where their bodies are in the environment. The labyrinth works with other systems in the body, such as the visual and skeletal systems, to maintain posture.

Injury to the middle ear caused by a reduction of air pressure.

BATNA is a term coined by Roger Fisher and William Ury in their 1981 bestseller, “Getting to Yes: Negotiating Without Giving In.” It stands for “best alternative to a negotiated agreement.”

Behavior Intervention Plan (BIP)
A plan to address problem behavior that includes, as appropriate, positive behavioral interventions, strategies and supports; program modifications; and supplementary aids and services that may be required to address the problem behavior.

Benign Paroxysmal Positional Vertigo (BPPV)
Balance disorder that results in sudden onset of dizziness, spinning, or vertigo when moving the head.

Bilateral Hearing Loss
Hearing loss in both ears.

Binaural Hearing Aids 
Hearing aids worn in both ears. For more detailed information, see Hearing Aids in the section on Auditory Devices.

Condition of lacking visual perception due to physiological or neurological factors.

Bone Conduction
An evaluative measure performed during diagnostic audiologic testing where sound is delivered via a bone ossilater. This technique helps determine whether the hearing loss is conductive or sensorineural. (This contrasts with Air Conduction, see above).

Brainstem Implant 
Auditory prosthesis that bypasses the cochlea and auditory nerve. This type of implant helps individuals who cannot benefit from a cochlear implant because the auditory nerves are not working.