Dr. Laura Friedman and Dr. Jessica Klusek published a study on vocal quality within women with the FMR1 premutation. Vocal quality is an indicator of motor function, as voice is controlled by the coordination of many muscles in the face, neck, and abdomen. Findings indicated that women with the FMR1 premutation had lower voices (lower pitch) and their voices were less clear and controlled than women without the FMR1 premutation. Analyzing vocal quality in women with the FMR1 premutation may help with earlier detection of other motor problems.

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