Final answer:
Walter Cannon was the first one to formulate the physiological response model in 1966. He articulated and named the fight-or-flight response.
Step-by-step explanation:
The first one to formulate the physiological response model in 1966 was Walter Cannon. He was a Harvard physiologist and he articulated and named the fight-or-flight response, which is the nervous system's sympathetic response to a significant stressor. Cannon's work in the early part of the 20th century was instrumental in identifying the body's physiological reactions to stress.