title: Normal response inhibition in boys with Tourette syndrome.
abstract: BACKGROUND
  Inhibitory deficits are often a matter of debate in the pathophysiology of Tourette syndrome (TS). Previous neuropsychological studies on behavioral inhibition revealed equivocal results.
  
  
  METHODS
  To overcome existing shortcomings (e.g. confounders like medication status, comorbid conditions) we compared medication naïve boys (10-14 years) suffering exclusively from TS with age, gender and IQ matched healthy controls using a highly demanding Go/Nogo task that controls for novelty effects.
  
  
  RESULTS
  The performance did not differ between boys with TS and healthy boys.
  
  
  CONCLUSIONS
  In TS normal response inhibition performance as measured by a Go/Nogo task can be assumed. However, there might be neurophysiological abnormalities in TS possibly related to compensatory mechanisms to control for tics. Hence, further studies combining neuropsychological and neurophysiological methods (e.g. electroencephalography, fMRI) using the same strictly controlled design along the whole range of development and tic severity are recommended.
authors.affiliation: Department of Child and Adolescent Psychiatry, University of Goettingen, Germany. vroessn@gwdg.de.
authors.forename: Veit
authors.initials: V
authors.lastname: Roessner
authors.forename: Björn
authors.initials: B
authors.lastname: Albrecht
authors.forename: Peter
authors.initials: P
authors.lastname: Dechent
authors.forename: Jürgen
authors.initials: J
authors.lastname: Baudewig
authors.forename: Aribert
authors.initials: A
authors.lastname: Rothenberger