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Brain Scan
MODEL RELEASED. Brain scan. Coloured magneticresonance imaging (MRI) scan of a sagittal (sideview) section through a healthy brain superimposedon a womanandamp;apos;s head. Conscious brain activity occursin the folded cerebrum (red/green/blue), which isthe largest part of the brain. The cerebellum(triangular, centre right) controls balance,posture and muscle tone. To its left is thebrainstem (yellow, centre). This controlsautomatic processes such as breathing, and joinsthe brain to the spinal cord. MRI uses radio wavesand a powerful magnetic field to create sliceimages through the body.