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1 results

  • Impaired response inhibition in obsessive compulsive disorder

  • R. Penadés, R. Catalán, K. Rubia, S. Andrés, M. Salamero, C. Gastó
  • Journal:
    European Psychiatry / Volume 22 / Issue 6 / September 2007
    Published online by Cambridge University Press:
    28 November 2006, pp. 404-410
  • Objective

    The present study investigates different three inhibitory control functions in patients with obsessive-compulsive disorder (OCD). Selective motor response inhibition was tested in a GO/NO-GO paradigm, the inhibition of a triggered motor response in a STOP paradigm and the ability to inhibit cognitive interference in a motor STROOP paradigm.

    Methods

    27 patients who met DSM-IV criteria for OCD and 25 age, handedness and IQ-matched healthy control subjects were tested in the GO/NO-GO, STOP and motor STROOP tasks.

    Results

    OCD patients performed significantly worse than controls in the selective inhibition of their motor responses (GO/NO-GO) and in the inhibition of cognitive interference (STROOP), and also showed worse performance in suppressing previously triggered motor responses (STOP).

    Conclusion

    Patients with OCD are impaired in motor and cognitive inhibitory mechanisms. The findings are consistent with psychobiological and neuropsychological models of OCD suggesting impairment of frontostriatal circuitries that mediate functions of inhibitory control.