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Visualizing Brain Activity with fMRI
An fMRI scan visualizes brain function by superimposing areas of heightened activity onto a structural image of the brain. The underlying brain tissue is typically shown in grayscale, while the regions with increased blood flow and oxygen levels, indicating neural activity, are highlighted in contrasting colors such as red or orange.
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Ch.3 Biopsychology - Psychology @ OpenStax
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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