Using Positron Emission Tomography, Researchers Have Compared the Activity Levels

question 902

Multiple Choice

Using positron emission tomography, researchers have compared the activity levels in the left and right hemispheres of bipolar (manic-depressive) brains and schizophrenic brains and found that activity is

• A) low in the left hemisphere for both bipolar and schizophrenic brains.
• B) low in the right hemisphere for both bipolar and schizophrenic brains.
• C) low in the left hemisphere in the bipolar brain and low in the right hemisphere for the schizophrenic brain.
• D) low in the right hemisphere in the bipolar brain and low in the left hemisphere for the schizophrenic brain.

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Definitions:

Circadian Rhythm

The internal biological clock that regulates the sleep-wake cycle, repeating roughly every 24 hours, influencing various physiological processes.

Seminal Fluid

A fluid that is secreted by the male reproductive organs and contains sperm cells, which are necessary for fertilization.

Prefrontal Cortex

The area of the cortex at the very front of the brain that specializes in anticipation, planning, and impulse control.

Cognitive Control

The mental ability to regulate and manipulate one's own cognitive processes, such as focusing attention, controlling impulses, and planning.