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Nancy L. Segal, PhD
University of Minnesota Minnesota Study of Twins Reared Apart Minneapolis, MN 55455

Arch Neurol. 1984;41(1):14.

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

Ramani suggested that one of the features of primary reading epilepsy may be a normal resting EEG record. It is possible that additional prolonged study, using the technique of ambulatory EEG recording, may capture nonreading activated disturbances.

To the Editor.

—Studies of twins with Gilles de la Tourette's syndrome are certain to improve our understanding of the cause of this disorder. A recent case concerning a set of twins, reported by Jenkins and Ashby in the ARCHIVES,¹ is an excellent example. The monozygosity of this pair was determined by co-twin concordance for an extensive series of blood group factors, as well as "identity" of a number of physical traits, among them hand preference. While there is evidence of a heritable component underlying human handedness, approximately 20% to 25% of monozygotic twin pairs are Discordant for this trait. Explanations for this intriguing phenomenon include delayed splitting of the fertilized egg . . . [Full Text PDF of this Article]

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