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How the fMRI works
The functional magnetic resonance imaging works in a noninvasive way by measuring changes in blood flow in the brain based on different activities. The blood flow is sensitive to changes in neural activity, which can be seen in various moods and between changes in moods. It can be used to investigate the changes and differences between a healthy brain and a diseased brain, for example the brain of a person with Alzheimer's. fMRI techniques are also used to help investigate depression, schizophrenia, autism, and other neurological disorders.
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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