The brain relocates its functions depending on the hemisphere used for language in left-handers
Universitat Jaume IApproximately 10% of the human population is left-handed. Among them, one in five exhibits a peculiar brain phenomenon known as 'atypical language lateralization'. While most people attribute their language capability to their left hemisphere, this atypical group of left-handers utilises their right hemisphere to speak. One of the oldest questions in neuroscience is how this phenomenon impacts brain organisation and human behaviour.
The Neuropsychology and Functional Neuroimaging Group at the Universitat Jaume I in Castellón, led by researcher César Ávila, published an article in the eLife journal providing evidence that language and inhibitory function (typically lateralised in the right hemisphere) are programmed to be located in different hemispheres. It also supports the hypothesis that has linked the presence of atypical brain lateralization with some neurodevelopmental disorders such as schizophrenia, dyslexia, or the autistic spectrum.
- Journal
- eLife
- Funder
- Agencia Estatal de Investigación (Spain), Universitat Jaume I, Ministerio de Educación, Cultura y Deportes