Biomaterial Database

A new surface electrode for recording from the posterior cricoarytenoid muscle. 1989

M Fujita, and C L Ludlow, and G E Woodson, and R F Naunton

Speech and Voice Unit, National Institute of Neurological and Communicative Disorders and Stroke, Bethesda, MD 20892.

A new pharyngeal surface electrode for recording posterior cricoarytenoid muscle activity through the hypopharyngeal mucosa has been evaluated. The electrode was passed through one nasal passage into the hypopharynx. Correct electrode location was verified by increased activity during inhalation, with decreased activity during phonation. The procedure was evaluated in 45 subjects, 10 normal speakers and 35 patients with dysphonia. Accurate recordings were obtained in 25 subjects (56%). Problems encountered were lack of pharyngeal descent, electrode dysfunction, and signal interference due to phonatory vibration or interarytenoid activity. Signal validity was evaluated in four normal speakers with accurate electrode placement. Significant (p less than or equal to 0.001) increases in PCA activity occurred during tasks requiring vocal fold abduction. The electrode proved to be a useful, noninvasive clinical tool for recording PCA activity in some patients.

UI	MeSH Term	Description	Entries
D007818	Laryngeal Diseases	Pathological processes involving any part of the LARYNX which coordinates many functions such as voice production, breathing, swallowing, and coughing.	Laryngeal Perichondritis,Larynx Diseases,Disease, Laryngeal,Disease, Larynx,Diseases, Laryngeal,Diseases, Larynx,Laryngeal Disease,Laryngeal Perichondritides,Larynx Disease,Perichondritides, Laryngeal,Perichondritis, Laryngeal
D007821	Laryngeal Muscles	The striated muscle groups which move the LARYNX as a whole or its parts, such as altering tension of the VOCAL CORDS, or size of the slit (RIMA GLOTTIDIS).	Cricothyroid Muscles,Aryepiglottic Muscle,Arytenoid Muscle,Cricoarytenoid Muscles,Thyroarytenoid Muscles,Thyroepiglottic Muscle,Vocal Muscle,Vocalis Muscle,Aryepiglottic Muscles,Arytenoid Muscles,Cricoarytenoid Muscle,Cricothyroid Muscle,Laryngeal Muscle,Muscle, Aryepiglottic,Muscle, Arytenoid,Muscle, Cricoarytenoid,Muscle, Cricothyroid,Muscle, Laryngeal,Muscle, Thyroarytenoid,Muscle, Thyroepiglottic,Muscle, Vocal,Muscle, Vocalis,Muscles, Aryepiglottic,Muscles, Arytenoid,Muscles, Cricoarytenoid,Muscles, Cricothyroid,Muscles, Laryngeal,Muscles, Thyroarytenoid,Muscles, Thyroepiglottic,Muscles, Vocal,Muscles, Vocalis,Thyroarytenoid Muscle,Thyroepiglottic Muscles,Vocal Muscles,Vocalis Muscles
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D009132	Muscles	Contractile tissue that produces movement in animals.	Muscle Tissue,Muscle,Muscle Tissues,Tissue, Muscle,Tissues, Muscle
D004566	Electrodes	Electric conductors through which electric currents enter or leave a medium, whether it be an electrolytic solution, solid, molten mass, gas, or vacuum.	Anode,Anode Materials,Cathode,Cathode Materials,Anode Material,Anodes,Cathode Material,Cathodes,Electrode,Material, Anode,Material, Cathode
D004576	Electromyography	Recording of the changes in electric potential of muscle by means of surface or needle electrodes.	Electromyogram,Surface Electromyography,Electromyograms,Electromyographies,Electromyographies, Surface,Electromyography, Surface,Surface Electromyographies
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults