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Harold C. Pillsbury, III, MD; Steven Pulver; Vincent N. Carrasco, MD; Ken Scruggs, MD; Donald Carver, MD; Lianne de Serres, MD; Michelle Bleynat, MD; Jiri Prazma, MD, PhD

Arch Otolaryngol Head Neck Surg. 1992;118(4):413-416.

Abstract
• The autonomic innervation of the inner ear has been investigated earlier, yet questions concerning the origin, function, extent, and distribution of sympathetic nerves in the cochlea still remain unanswered. This study investigates the extent and distribution of adrenergic nerves in the cochlea. Our procedure combines the glyoxylic acid method of catecholamine fluorophore identification with rapid dissection, decalcification, and whole-mount slide preparation techniques to topographically trace the adrenergic innervation of the cochlear infrastructure. We have demonstrated that perivascular adrenergic innervation extends beyond the immediate branches of the modiolar artery and reaches into radiating arterioles. These findings also suggest the possibility of segmental regulation of cochlear blood flow.

(Arch Otolaryngol Head Neck Surg. 1992;118:413-416)

Author Affiliations
From the Division of Otolaryngology/Head and Neck Surgery, University of North Carolina, Chapel Hill.

Footnotes
Accepted for publication September 13, 1991.

Reprint requests to Department of Otolaryngology/Head and Neck Surgery, 610 Burnett Womack Bldg, CB 7070, University of North Carolina, Chapel Hill, NC 27599-7070 (Dr Pillsbury).

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