Today, has largely replaced homeostasis in our understanding of how the brain regulates the body's response to challenges from the environment.

Today has largely replaced homeostasis in our understanding of how the brain regulates the body's response to challenges from the environment. This is allostasis. This is further explained below.

What is allostasis?

Generally, The process of preserving homeostasis through adapting an organism's internal environment to meet observed and expected needs is referred to as allostasis. Allostasis is described as the process of maintaining equilibrium.

In conclusion, Our knowledge of how the brain governs the body's reaction to challenges posed by the environment has essentially been supplanted by today's concept, which is known as homeostasis. Allostasis refers to this state.