Transcription of The Brain and Reading - Balanced Reading
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The Brain and Reading - Balanced Reading
The Brain and ReadingSebastian Wren, Southwest Educational Development Laboratory (800) 476-6861211 E. 7th Street Austin, Texas EducationalDevelopment LaboratoryWith a PET scan (above left), radioactive glucose isinjected into the blood stream. The most activeneurons absorb more of the radioactive glucose, so itis easy to take a picture of the Brain s activity duringdifferenttasks. With an MRI (above right), magneticfields are generated that cause the nuclei of theneurons to line up, making it possible to take adifferent kind of picture of the Brain s you read this passage quietly toyourself, certain parts of your Brain areworking to try to make sense of differentaspects of the information contained in thistext. We can actually take a picture of theactivity in the Brain as its owner engages incertain behaviors (using either a PET scan oran MRI), and the picture tells us what parts ofthe Brain are most active during that outer surface of the Brain (called theNeocortex) is functionally divided into fourlobes the frontal lobe at the front of thehead, the occipital lobe at the back of thehead, the temporal lobe on the side, and theparietal lobe on the now, as you read this passage oftext, your occipital cortex is very active,processing all of t
brain that are also quite active when you are reading (e.g. parts of the cerebellum controlling automatic eye movements, parts of the reticular formation responsible for
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