PO2-dependent changes in intrinsic and extrinsic tongue muscle activities in the rat.

ABSTRACT:

Rationale

Historically, respiratory-related research in sleep apnea has focused exclusively on the extrinsic tongue muscles (i.e., genioglossus, hyoglossus, and styloglossus). Until recently, the respiratory control and function of intrinsic tongue muscles (i.e., inferior and superior longitudinalis, transverses, and verticalis), which comprise the bulk of the tongue, were unknown.

Objectives

The current study sought to determine if extrinsic and intrinsic tongue muscles are coactivated in conditions of hypoxemia comparable to that experienced by adults with obstructive sleep apnea.

Measurements

Esophageal pressure and EMG activity of an extrinsic (hyoglossus) and an intrinsic (superior longitudinal) tongue muscle were studied in anesthetized, tracheotomized, spontane

SUBMITTER: Bailey EF 

PROVIDER: S-EPMC2718482 | biostudies-literature | 2005 Jun

REPOSITORIES: biostudies-literature