[Detection of oropharyngeal sensory function in normal population]

Area of Science:

• Neurology
• Otorhinolaryngology (ENT)
• Sensory Physiology

Background:

• Oropharyngeal sensory function is crucial for swallowing and airway protection.
• Current methods for assessing oropharyngeal sensation have limitations.
• Understanding factors influencing oropharyngeal sensation is vital for clinical diagnosis.

Purpose of the Study:

• To evaluate oropharyngeal sensory function using Current Perception Threshold (CPT) detection.
• To establish a detection method for oropharyngeal sensory function in a healthy population.
• To identify factors that may influence oropharyngeal sensory function.

Main Methods:

• Prospective study of 58 healthy subjects (20-76 years old).
• Utilized the Neurometer CPT system to stimulate the palatoglossal arch and tongue base at 2000 Hz, 250 Hz, and 5 Hz.
• Recorded CPT values, inversely proportional to sensation, to assess Aβ, Aδ, and C sensory nerve fiber function.

Main Results:

• Palatoglossal arch sensitivity was significantly higher than tongue base sensitivity (lower CPT values).
• Sensitivity decreased with increasing frequency (2000 Hz > 250 Hz > 5 Hz).
• No significant differences were found between left and right sides; gender showed minimal differences, but women in childbearing age had significantly higher sensitivity than menopausal women. Sensitivity decreased significantly with age and was lower in younger age groups.

Conclusions:

• CPT is a viable method for assessing oropharyngeal sensory function.
• Oropharyngeal sensory function varies by anatomical location (palatoglossal arch vs. tongue base) and frequency.
• Age and hormonal status (e.g., childbearing vs. menopause) are significant influencing factors on oropharyngeal sensory function.