What happens if you destroy the ventromedial hypothalamus of a rat?

What happens if you destroy the ventromedial hypothalamus of a rat?

A starving rat will lose all interest in food if what part of its brain is destroyed? Lateral hypothalamus. If the lateral hypothalamus is destroyed, an organism will no longer experience the feeling of hunger. Destruction of the ventromedial hypothalamus results in an ongoing feeling of hunger, even after eating.

What is the most likely outcome from stimulating the ventromedial hypothalamus in a rat?

Stimulating the ventromedial hypothalamus results in: the same type and magnitude of effect as destroying the lateral hypothalamus.

What happens when you stimulate the ventromedial hypothalamus?

Electrical stimulation of the ventromedial hypothalamus enhances both fat utilization and metabolic rate that precede and parallel the inhibition of feeding behavior. Brain Res.

What two actions result in a decrease of a rat’s food intake?

What two actions result in a DECREASE of a rat’s food intake? destroying the lateral hypothalamus and stimulating the ventromedial hypothalamus.

What part of the brain is most closely linked to controlling the feeling of hunger?


When the lateral hypothalamus is destroyed rats will?

When the lateral hypothalamus of a rat is destroyed, it may most likely: become aphagic. __________is the state in which an organism experiences an inducement or incentive to do something.

What does the ventromedial hypothalamus do?

“The ventromedial hypothalamus (VMH) is a distinct morphological nucleus involved in terminating hunger, fear, thermoregulation, and sexual activity.” This nuclear region is involved with the recognition of the feeling of fullness.

Which best explains drive reduction theory?

What best describes the logic of the drive reduction theory of motivation? Biological needs produce internal discomfort. People engage in behaviors that will reduce this discomfort. You just studied 67 terms!

Is a hunger triggering hormone secreted by the hypothalamus?

Terms in this set (19) Increases in the hormone insulin reduces blood glucose levels, leading to sensation. A hunger-triggering hormone secreted by the hypothalamus. Ghrelin. A hunger-arousing hormone secreted by an empty stomach.

What is the hunger triggering hormone?

Ghrelin is a hormone that is produced and released mainly by the stomach with small amounts also released by the small intestine, pancreas and brain. Ghrelin has numerous functions. It is termed the ‘hunger hormone’ because it stimulates appetite, increases food intake and promotes fat storage.

Is a hormone secreted by an empty stomach that sends I’m hungry signals to the brain?

Terms in this set (36) appetite hormone secreted by empty stomach (bottom); sends “I’m hungry” signals to brain; “Feed me!”

Does drive theory offer a comprehensive account of motivation?

Does drive theory offer a comprehensive account of motivation? Why or why not? No. Drive theory offers a satisfactory explanation of physiological motives, but fails to account for more psychologically oriented motives.

Why do drive reduction approaches fail to offer a complete account?

Why do drive-reduction approaches fail to offer a complete account of human motivation? People are sometimes motivated to increase rather than decrease their level of stimulation. 15. Dr.

Why does drive reduction fail to explain motivation fully?

One of the biggest problems with Hull’s drive reduction theory is that it does not account for how secondary reinforcers reduce drives. Unlike primary drives such as hunger and thirst, secondary reinforcers do nothing to directly reduce physiological and biological needs.

What are the main principles of arousal approaches to motivation?

What are the main principles of arousal approaches to motivation? We seek to increase and/or decrease excitement to maintain a certain level. There are ______ levels of needs proposed by Maslow in his Hierarchy of Needs model. Which accurately describes the evolutionary theory?

How do I calm my arousal?

If you need to lower your arousal levels, you might: Enjoy a relaxing hobby. Read a book. Take a bath….Behavior Is Motivated by Arousal Levels

  1. Engage in physical activity.
  2. Socialize with friends.
  3. Try something new and exciting.
  4. Watch an action-packed movie.

What are our most basic motivations called?

Our four most basic motives are a need to stay safe, obtain food, water, and shelter. It is called instinct theory B.

What is the optimum level of arousal?

Optimal arousal is a psychological construct referring to a level of mental stimulation at which physical performance, learning, or temporary feelings of wellbeing are maximized (Smith 1990). It can also be described as the degree of energy release and the intensity of readiness.

What is arousal state?

Arousal is the physiological and psychological state of being awoken or of sense organs stimulated to a point of perception. Arousal is important in regulating consciousness, attention, alertness, and information processing.

What is Yerkes Dodson Law of Arousal?

According to what is known as “The Yerkes-Dodson law,” performance increases with physiological or mental arousal (stress) but only up to a point. When the level of stress becomes too high, performance decreases. There’s more: The shape of the curve varies based on the complexity and familiarity of the task.

What level of stress is typically most productive?

Anywhere between 13–20 implies you are in the optimal level of arousal. Your stress levels are exactly where you need it to be to get the most out of yourself.

How can you tell if your stress levels are high?

Some of the physical signs that your stress levels are too high include: Pain or tension in your head, chest, stomach, or muscles. Your muscles tend to tense up when you’re stressed, and over time this can cause headaches, migraines, or musculoskeletal problems. Digestive problems.

How do you know if you have stress in your life?

Emotional symptoms:

  1. Depression or general unhappiness.
  2. Anxiety and agitation.
  3. Moodiness, irritability, or anger.
  4. Feeling overwhelmed.
  5. Loneliness and isolation.
  6. Other mental or emotional health problems.

Which of the following is an example of a behavioral sign of stress?

Changes in appetite — either not eating or eating too much. Procrastinating and avoiding responsibilities. Increased use of alcohol, drugs, or cigarettes. Exhibiting more nervous behaviors, such as nail biting, fidgeting, and pacing.

Can your mind create symptoms?

So if you’re experiencing unexplained aches and pains, it might be linked to your mental health. According to Carla Manley, PhD, a clinical psychologist and author, people with mental illnesses can experience a range of physical symptoms, such as muscle tension, pain, headaches, insomnia, and feelings of restlessness.

What are the 4 types of stressors?

The Four Common Types of Stress

  • Time stress.
  • Anticipatory stress.
  • Situational stress.
  • Encounter stress.

What are 2 types of stressors?

There are two broad categories of stressors: Physiological (or physical) stressors and Psychological Stressors.

What are the 3 stages of stress?

The general adaptation syndrome (GAS), developed by Hans Selye, describes the pattern of responses that the body goes through after being prompted by a stressor. There are three stages: alarm, resistance, and exhaustion.

How does stress affect you spiritually?

Anxiety can rob us of the ability to enjoy our lives, creating instead hopelessness and shame. We find it hard to stop obsessing long enough to enjoy a loving relationship, find humor in life, or enjoy peaceful moments. We cannot create, relax, or imagine a life without fear.