Muscle tension dysphonia means that there are muscles being used for sound production (phonation) that should not be used. During normal, healthy vocalization, only the vocal cords should move. However, in MTD, other muscles including the false vocal folds, the laryngeal strap muscles (in the neck), and the sternocleidomastoid muscles are used to produce or support sound.
These patterns of muscle misuse may develop for many reasons. Some untrained voices naturally rely on accessory muscle use because that is the only way they can produce the desired sound or power. Some people with excellent training develop MTD as a result of a temporary injury (i.e., laryngitis, a cold, etc). The injury forces the singer to use their voice differently to compensate, but after recovery the pattern of muscle misuse persists.
Muscle tension dysphonia means that there are muscles being used for sound production (phonation) that should not be used. During normal, healthy vocalization, only the vocal cords should move. However, in MTD, other muscles including the false vocal folds, the laryngeal strap muscles (in the neck), and the sternocleidomastoid muscles are used to produce or support sound.These patterns of muscle misuse may develop for many reasons. Some untrained voices naturally rely on accessory muscle use because that is the only way they can produce the desired sound or power. Some people with excellent training develop MTD as a result of a temporary injury (i.e., laryngitis, a cold, etc). The injury forces the singer to use their voice differently to compensate, but after recovery the pattern of muscle misuse persists.
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