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Regular version of the site

Book chapter

Связь объёма мозолистого тела с латерализацией речи в мозге

С. 44-47.
Больгина Т. А., Малютина С. А., Зинченко В. В., Игнатьев Г. А., Ушаков В. Л., Акинина Ю. С., Иванова М. В., Драгой О. В.

The mechanisms of lateralization of language processing are still not fully understood by neurolinguistics today. The current study aims to study the relation between language lateralization and such factors as individual handedness, familial sinistrality and tractography metrics of the corpus callosum (CC). We collected fMRI and DTI data, as well as information about individual handedness and familial sinistrality in 50 neurologically healthy Russian speakers. According to the results, language lateralization is related to the volume and fractional anisotropy of CC, as well as individual handedness. Specifically, people with greater right-hand preference and people with a larger volume and higher fractional anisotropy of CC have greater lateralization of language-related activation to the left hemisphere of a brain.