Biomaterial Database

Laryngeal adjustments in the production of the fricative consonants and devoiced vowels in Japanese. 1981

H Yoshioka

The role of laryngeal adjustments for phonetic variations of voicing in Japanese--vowel devoicing and intervocalic /h/ voicing--was investigated using laryngeal electromyography (EMG) and fiberoptic endoscopy. The results indicated that the vowel devoicing was accompanied by EMG activity patterns of the posterior cricoarytenoid and interarytenoid different from those for fully voiced vowels, causing the glottis to be wide open. In this respect, it may be concluded that vowel devoicing mainly reflects a kind of free variation at a higher level than the EMG signals. In contrast, the voicing of /h/ occurred while the glottis remained as wide as it did for voiceless /h/ or /s/ with comparable EMG patterns of those muscles, despite the presence of vocal fold vibrations. Therefore, it may be that this latter phenomenon is chiefly dependent on some other condition at the level of the glottis.

UI	MeSH Term	Description	Entries
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
D007828	Laryngoscopy	Examination, therapy or surgery of the interior of the larynx performed with a specially designed endoscope.	Laryngoscopic Surgical Procedures,Surgical Procedures, Laryngoscopic,Laryngoscopic Surgery,Surgery, Laryngoscopic,Laryngoscopic Surgeries,Laryngoscopic Surgical Procedure,Laryngoscopies,Procedure, Laryngoscopic Surgical,Procedures, Laryngoscopic Surgical,Surgeries, Laryngoscopic,Surgical Procedure, Laryngoscopic
D008037	Linguistics	The science of language, including phonetics, phonology, morphology, syntax, semantics, pragmatics, and historical linguistics. (Random House Unabridged Dictionary, 2d ed)	Linguistic
D009132	Muscles	Contractile tissue that produces movement in animals.	Muscle Tissue,Muscle,Muscle Tissues,Tissue, Muscle,Tissues, Muscle
D010699	Phonation	The process of producing vocal sounds by means of VOCAL CORDS vibrating in an expiratory blast of air.	Phonations
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
D005336	Fiber Optic Technology	The technology of transmitting light over long distances through strands of glass or other transparent material.	Fiber Optic Technologies,Optic Technologies, Fiber,Optic Technology, Fiber,Technologies, Fiber Optic,Technology, Fiber Optic
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013018	Sound Spectrography	The graphic registration of the frequency and intensity of sounds, such as speech, infant crying, and animal vocalizations.	Sonography, Speech,Sonography, Sound,Speech Sonography,Sonographies, Sound,Sound Sonographies,Sound Sonography,Spectrography, Sound
D014831	Voice	The sounds produced by humans by the passage of air through the LARYNX and over the VOCAL CORDS, and then modified by the resonance organs, the NASOPHARYNX, and the MOUTH.	Voices