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July 1980

The Hyperactive Acoustic Reflex: Four Case Studies

Author Affiliations

From the University of Arizona, Tucson (Mr Downs), and the Veterans Administration Medical Center, Albuquerque, NM (Dr Crum).

Arch Otolaryngol. 1980;106(7):401-404. doi:10.1001/archotol.1980.00790310025006

• Four case studies are presented to illustrate that low acoustic reflex thresholds may have value in assessment of central auditory processing disorders. Neurologic, electronystagmographic, EEG, speech pathologic, and/or psychological evaluations suggested CNS impairment. Tests for central auditory processing disturbance were positive. For three subjects, acoustic reflex responses were elicited at unusually low hearing threshold levels. A fourth subject showed lowering of acoustic reflex thresholds following bilateral electroshock treatment. These lowered thresholds were interpreted as hyperactive acoustic reflex responses representing a decreased central inhibition on peripheral auditory function. It is proposed that presence of hyperactive acoustic reflex responses may be associated with a concomitant central auditory processing disorder.

(Arch Otolaryngol 106:401-404, 1980)