Colour PET brain scan when seeing or hearing words

Colour PET brain scan when seeing or hearing words

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Credit: WELLCOME DEPT. OF COGNITIVE NEUROLOGY/ SCIENCE PHOTO LIBRARY

Caption: Seeing or hearing words. Colour Positron Emission Tomography (PET) scan showing areas of the human brain activated by words which are seen or heard. The external left-side of the brain is shown. Brain regions which are active are colour-coded red/white. At top, the patient is seeing words that make sense; the visual cortex is activated in the temporal region of the brain. At bottom, the patient is hearing words; the auditory area is activated in the temporal region of the brain. PET scanning involves the injection of a radioactive tracer substance to detect blood flow and areas of high metabolic activity in the brain.

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Keywords: anatomy, auditory region, brain, brain function, brain recognition, brain scan, hearing, human body, nervous system, neuroimaging, pet, pet scan, reading, visual region, word

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