The gastroauricular phenomenon and related vagus reflexes.

Eight lesser known reflexes were grouped together because of their anatomical and physiological relationship. In all of them a branch of the vagus nerve forms a bridge between a circumscribed area of the skin, mostly the external auditory meatus, and an internal organ, namely the stomach, esophagus, lungs, heart, uterus, and some male and female sex organs. The eight reflexes are: (1) Gastroauricular phenomenon (Gaph) (Engel, 1922) in man; (2) Auricular phenomenon (Malherbe, 1958) in man; (3) Pulmonoauricular phenomenon (Deutsch, 1919) in man; (4) Auriculogenital reflex (Bradford, 1937) in cat; (5) Auriculouterine reflex (Vasiliu, 1932) in women; (6) Oculocardiac reflex (Aschner, 1967) in man; (7) Kalchschmidt's reflex in cattle (1956); and (8) Coughing attack with heartburn (Berlin, 1959) in man. The organs involved are either effector or receptor organs. The six reflexes observed in man are of diagnostic significance. Attention is also drawn to analogous reflexes in which the meningeal branch of the vagus is involved.