AP PSYCHOLOGY

MOTIVATION EMOTION AND STRESS

HUNGER MOTIVATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A starving rat will lose all interest in food if its ____ is destroyed.
A
lateral thalamus
B
ventromedial thalamus
C
lateral hypothalamus
D
ventromedial hypothalamus
Explanation: 

Detailed explanation-1: -To elaborate, the lateral hypothalamus is responsible for both activating and inhibiting feeding behavior. Therefore, if a rat’s lateral hypothalamus was destroyed the rat will not feel hungry and will not initiate any feeding behavior.

Detailed explanation-2: -It is well known that lesions of the lateral hypothalamus (LH) produce aphagia. Several previous studies have reported that lateral hypothalamus damage produces food aversion in addition to aphagia. However, damage to other regions near the LH also produce aphagia and enhanced aversion.

Detailed explanation-3: -If the lateral hypothalamus is destroyed, a rat will refuse to drink until forced to do so.

Detailed explanation-4: -The LH is generally known as the hunger center, and two of its main functions are the stimulation of feeding behavior and arousal. Electrical stimulation of the LH results in ravenous eating behavior, and animals are extremely motivated to work for a food reward (Stuber and Wise, 2016).

Detailed explanation-5: -General Functions of the Lateral Hypothalamus LH neurons control feeding, blood pressure, heart rate, water intake and sodium excretion largely through the activation of adrenergic receptors (Shiraishi, 1991; Saad et al., 2000; Mendonca et al., 2018).

There is 1 question to complete.