AP PSYCHOLOGY

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BIOLOGICAL BASES OF BEHAVIOR

THE NERVOUS AND ENDOCRINE SYSTEMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Imagine that you have stumbled across a secret laboratory where an evil scientist is conducting unauthorized brain research. By altering brain structures, he has created superheroes who have specialized powers or abilities. One of these superheroes is absolutely fearless, has no emotions, and is willing to undertake extremely dangerous missions. In this case, the brain structure that the scientist MOST likely altered would be
A
medulla
B
cerebellum
C
midbrain
D
limbic system
Explanation: 

Detailed explanation-1: -Amygdala is the integrative center for emotions, emotional behavior, and motivation. If the brain is turned upside down the end of the structure continuous with the hippocampus is called the uncus. If you peel away uncus you will expose the amygdala which abuts the anterior of the hippocampus.

Detailed explanation-2: -Magnetic resonance imaging (MRI) is a diagnostic procedure that uses a combination of a large magnet, radiofrequencies, and a computer to produce detailed images of organs and structures within the body. Unlike X-rays or computed tomography (CT scans), MRI does not use ionizing radiation.

Detailed explanation-3: -Action potentials either happen or they don’t; there is no such thing as a “partial” firing of a neuron. This principle is known as the all-or-none law. This means that neurons always fire at their full strength.

Detailed explanation-4: -Insula. A structure of the human brain. It lies deep to the brain’s lateral surface, within the lateral sulcus which separates the temporal lobe and inferior parietal cortex.

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