Parsons and Her Colleagues Are Doing a Study Comparing Differences

question 1

Multiple Choice

Parsons and her colleagues are doing a study comparing differences in brain activity levels between patients with schizophrenia and controls with no psychological disorders. Their hypothesis requires a high level of detail and good detection of differences over time. Which of the following is the best brain imaging technique to use?

• A) computerized tomography (CT) scan
• B) functional magnetic resonance imaging (fMRI)
• C) magnetic resonance imaging (MRI)
• D) positron emission tomography (PET)

---

Definitions:

Carbon Dioxide

A colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air.

Plasma

In vertebrates, the liquid portion of blood; contains nutrients, wastes, salts, and proteins.

Oxyhemoglobin

Compound formed when oxygen combines with hemoglobin.

Vocal Sounds

Sounds produced by creatures, particularly humans, using the vocal cords and/or other mechanisms in the throat, often used for communication.