JAMES KING-HOLMES / HENRY LUCKHOO / SCIENCE PHOTO LIBRARY JAMES KING-HOLMES / HENRY LUCKHOO / SCIENCE PHOTO LIBRARY
Magnetoencephalography (MEG) scans (top row) of slices of a human brain, and comparison scans using Functional Magnetic Resonance Imaging (fMRI). Both sets of scans show network activity in the resting or 'default-mode' state. This network is only found at rest and disappears when the subject is given a task. The 'default-mode' network and its connection to various neurological diseases and disorders is currently being intensively researched.The MEG scanner images the magnetic fields produced by the electrical currents resulting from neural activity within the brain. On both types of image the gradient of activity is from areas of low (red) to high (yellow).
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