28.0 MB (28.0 MB compressed)
3886 x 2516 pixels
33.0 x 21.3 cm ⏐ 13.0 x 8.4 in (300dpi)
WELLCOME DEPT. OF COGNITIVE NEUROLOGY / SCIENCE PHOTO LIBRARY WELLCOME DEPT. OF COGNITIVE NEUROLOGY / SCIENCE PHOTO LIBRARY
Depression. Coloured Positron Emission Tomography (PET) scan of the brain of a patient suffering depression. The left-side of the brain is seen, in external view. Colour-coded regions highlighted in green/red depict areas of low activity associated with depression. These regions are the prefrontal cortex (at left) and parieto-temporal areas (at right). There has been a decrease in blood flow to these regions. In patients treated for depression, metabolic activity and blood flow resumes to a healthy state in these affected areas. Depression is a disorder of varying severity resulting in sadness, hopelessness, and loss of concentration.
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