Domanda 133, Human Performance and Limitations - ATPL - Airline Transport Pilot license

It is caused by an increase in the partial pressure of oxygen associated with a decrease in altitude
It is more likely to occur during ascent then during a rapid descent
It is caused by pressure differentials between gases in hollow cavities of the body and the ambient pressure
It is mainly associated with a sink rate which exceeds the ability of the body to balance its internal pressures