Brain scan false readings occur due to relaxation-induced changes in breathing, heart rates, and blood oxygen levels in fMRI.
A new study reveals that some brain scans can provide false readings due to individuals becoming more relaxed and sleepy during the process. Changes in breathing and heart rates alter blood oxygen levels in the brain, which are then falsely detected as normal neuronal activity in functional magnetic resonance imaging (fMRI). The tendency of people's arousal to decrease during scans has been found to distort brain connection maps produced by fMRI.
June 19, 2024
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