PSYC 101 Chapter Notes - Chapter 11: Orbitofrontal Cortex, Lateral Hypothalamus, Semantic Network
9 Feb 2018
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Homeostasis is the process of maintaining relatively stable internal states. For example, this diagram illustrates how homeostasis regulates thirst and the body"s fluid levels. The body detects that fluid levels are low and sends signals to the brain that motivates us to drink; once fluid levels are normal, this motivation decreases. A pack of psychology professors are, of course, just out of view in this photo, battle a group of kenyans for third place. The hypothalamus acts as an on/off switch for hunger. The lateral region of the hypothalamus signals when it is time to eat, while the ventromedial and paraventricular regions signal when it is time to stop eating. When fat receptors of the tongue are stimulated, the cingulate cortex a region of the brain involved in emotional processing is activated. The orbitofrontal cortex is involved in linking food taste and texture with reward.
