TABLE I.

Definitions.

Name	Acronym	Definition
Reflexive pharyngeal swallow	RPS	An irresistible swallow triggered by stimulating the hypopharynx
Pharyngo-UES contractile reflex	PUCR	UES contractile response triggered by stimulation of the hypopharynx (unassociated with a swallow)
Pharyngoglottal closure reflex	PGCR	Adduction of the vocal cords in response to hypopharyngeal stimulation (unassociated with a swallow)
Hypopharyngeal safe volume	HPSV	Maximum amount of water that can safely collect in the hypopharynx before spilling into the larynx

UES =upper esophageal sphincter.