METHOD FOR GRAVITATIONAL FLUCTUATION STRESS LOADING, AIRCRAFT, METHOD FOR AIRCRAFT OPERATION, METHOD FOR PROMOTING SEROTONIN SYNTHESIS GENE EXPRESSION, METHOD FOR SYNTHESIZING SEROTONIN, METHOD FOR STIMULATING CENTRAL NERVOUS SYSTEM, AND METHOD FOR DETERMINING DRUG EFFECT
A gravitational fluctuation stress loading method capable of causing a new acute stress reaction in a subject or a laboratory animal is provided. A gravitational fluctuation stress loading method including at least one first stress-loading step (S1) of placing a stress load on the subject or the laboratory animal by means of microgravity is provided.