ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Human brain's left hemisphere. Coloured functional magnetic resonance imaging (fMRI) scan of the left hemisphere of a normal adult human brain, combined with an imaging scan of the skull and other tissues of the head. Here, activity (red) in the left hemispheres of the brain is displayed corresponding to speech and language skills (Broca's area).
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