How the fMRI works

Comparison of fMRI and PET Scans

Using MRI and fMRI to Study Psychological Disorders

Visualizing Brain Activity with fMRI

A researcher conducts a study where participants view images of faces while their brain is scanned. The resulting images show a specific region of the brain has a significantly higher concentration of oxygenated blood compared to when participants are at rest. What is the most accurate interpretation of this finding?

A researcher conducts a study where participants perform a complex problem-solving task while inside a scanner that measures changes in blood oxygenation levels in the brain. The results show a significant increase in blood flow to the prefrontal cortex during the task. Based on the principles of how this imaging technique works, what is the most direct and accurate interpretation of this specific finding?

Using fMRI to Classify Dream Visual Images