Anatomic basis of Arnold's ear-cough reflex

Area of Science:

• Otolaryngology
• Neurology

Background:

• Arnold's nerve, a branch of the vagus nerve, is known to mediate certain reflexes.
• The precise distribution and clinical significance of Arnold's nerve reflexes require further investigation.

Purpose of the Study:

• To determine the incidence of Arnold's ear-cough reflex in a clinical patient population.
• To evaluate the elicitation points and laterality of this reflex.

Main Methods:

• A clinical survey was conducted on 500 patients.
• The presence and characteristics of the ear-cough reflex were clinically assessed.

Main Results:

• The Arnold's ear-cough reflex was identified in 4.2% of patients.
• The reflex was bilateral in 2.8% of cases and elicitable from the anterior meatal wall in 2% of patients.
• Findings challenge the traditionally accepted distribution of Arnold's nerve.

Conclusions:

• The ear-cough reflex has a notable incidence in the general population.
• Clinical findings suggest a broader distribution of Arnold's nerve than previously understood.
• Further research is warranted to fully elucidate the functions of Arnold's nerve.