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Joan Stephenson, PhD

JAMA. 1998;279:1153.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

Certain brain regions of people with the most common form of dyslexia show a decrease in function when such individuals are reading, according to a new study (Proc Natl Acad Sci USA. 1998;95:2636-2641).

A National Institute of Child Health and Human Development–funded research team from Yale University School of Medicine, New Haven, Conn, used functional magnetic resonance imaging (fMRI) technology to produce computer-generated images of the brain while subjects engaged in reading-related tasks. The images revealed a "cerebral signature" for the disorder.

Imaging techniques reveal that different areas of the brain are active (shown in red) in nonimpaired and dyslexic readers.

In their study of 29 dyslexic readers and 32 normal readers, the investigators asked both normal and dyslexic readers to perform various reading tasks related to the ability to break down spoken words into smaller units of sound, a skill characteristically lacking in dyslexia. . . . [Full Text of this Article]

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