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June 2017

No difference in planum temporale asymmetry in people who stutter

Over several studies we have acquired images of brain structure in people who stutter from age 12 upwards.  This large sample allowed us to address the question about whether the planum temporale - a structure involved in language processing in the brain - showed an unusual pattern of asymmetry.  It was previously reported that some people who stutter, and particularly those with severe stuttering, have an abnormal rightwards asymmetry of this structure.  Whereas, most people, even left-handers, show a leftwards asymmetry.  We found no difference in the asymmetry of this structure in people who stutter compared with people who do not stutter.  We also found no relationship with stuttering severity.  The results were published in a Special Issue of the Journal of Fluency Disorders, edited by Katrin Neumann on Neuroimaging in Stuttering.  Because our work was funded by the Medical Research Council we have been able to make this manuscript open access and you can download it for free here