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Laterality effects in twins.

T A Meshkova
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Abstract

The laterality effects in 10 symmetrical EEG derivations in twins (20 MZ and 20 DZ pairs with a mean age of 20.5 years) were examined. The quantitative and qualitative analyses gave the following results: (1) cotwins in the MZ and DZ pairs differed particularly in the intensity of asymmetry for EEG parameters--one was more asymmetrical than the other; (2) among the MZ twins there were no "mirror" pairs (opposite asymmetry of the EEG), even where opposite-handedness existed. For example, a right-handed twin had an asymmetrical EEG, while the other, a left-hander, had a symmetrical one; (3) the most asymmetrical EEG was in the temporal derivations showing a more active left hemisphere; and, (4) there was no evidence of genetic influence in the intensity of EEG asymmetry.

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BrainElectroencephalographyElectrophysiologyFunctional LateralityHumansMaleMiddle AgedTwins, DizygoticTwins, MonozygoticJournal Article

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T A Meshkova. 1992. Laterality effects in twins.. https://doi.org/10.1017/s0001566000002178

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