Results have shown that there is less coordination between the speech motor and planning regions in the brain's left hemisphere of men and women who stutter, when compared to a non-stuttering control group.[37] Anatomical connectivity of the speech motor and planning regions is less vigorous in adults who stutter, especially women. Men who stutter seem to have more right-sided motor connectivity. On the other hand, stuttering women have less connectivity with the right motor regions.[37]