Functional Magnetic Resonance Imaging Is a Tool That Has Been

question 40

Multiple Choice

Functional Magnetic Resonance Imaging is a tool that has been very useful in identifying what parts of the brain do what. Scientists can have a person perform some particular activity and then look for active areas in the brain. How does fMRI work?

• A) It takes a picture of the inside of the brain according to electricity levels. The more electrical current in the area, the more active it is.
• B) It takes a picture of the inside of the brain according to blood flow. More blood flow indicates more activity in that area.
• C) It takes a picture of the brain according to oxygen levels. More oxygen in an area indicates more activity in that area.
• D) It takes images of thin layers of the brain and the more electrical activity in a layer, the more magnetic it is and this shows up in fMRI.
• E) Electrodes attached to the skull can trigger activity in particular brain areas which then trigger a person to perform certain behaviors.

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Definitions:

Biological Vulnerabilities

Inherent physiological or genetic traits in an individual that increase their risk for developing psychological or physical disorders.

Psychological Disorders

A wide range of mental health conditions characterized by significant disturbances in thoughts, feelings, or behaviors associated with distress or impaired functioning.

Acute Stress Disorder

A mental condition that develops within a month after exposure to a traumatic event, characterized by severe anxiety and dissociation.

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An incident that causes physical, emotional, psychological distress or harm, often resulting in lasting mental and physical effects.