[Cognition disorders in obsessive disorder]

The authors present a critical overview of the multiple studies of cognitive functions of patients with obsessive compulsive disorder. First are mentioned some correlations between neurological diseases and obsessive compulsive disorder. Then, the authors analyse the results obtained by the patients in WAIS, in the tactual perception memory test, in visual memory and orientation and in verbal memory. Verbal behaviour, performances in sensory perception tests, motor performances, attention and, lastly, troubles in information processing are reviewed. With these results, the authors try to develop the relevant theories about the mechanisms in obsessive compulsive disorder: dysfunction of the dominant hemisphere and abnormality of the serotoninergic system.