Unique saccadic abilities associated with tourette syndrome: Pure and comorbid groups a controlled study

► Heterogeneous samples of children with TS may produce significantly different findings. ► Each TS+comorbid group behaved differently under various fixation offset conditions. ► The TS+ADHD+OCD group displayed an enhanced saccadic ability. ► The TS+ADHD group displayed higher antisaccade errors and unable to reduce it.