Some aspects and implications of coital physiology.

A review of some experiments in human coital physiology in the home setting considers their possible value to the sex therapist. Blood pressure changes are described in normal subjects with reference to their relevance in patients with heart disease or high blood pressure. Respiratory patterns and intravaginal and intrauterine pressure changes are described during coitus, and their significance in different types of female orgasm are discussed. It now appears that a specific deeply satisfying and terminative female orgasm is associated with a particular type of respiratory pattern and intrauterine pressure change. The use of radiotelemetry devices to measure pressure and pH changes during coitus makes home studies possible. Further projects and areas for future study are considered.