Are there any cognitive functioning disorders specific for anorexia nervosa?

Aim: Review of studies on cognitive functioning disorders in anorexia nervosa. Views: The neuroimaging studies on patients with diagnosed anorexia nervosa demonstrate the presence of various structural and functional deviations of the central nervous system in these patients, mostly cortico-subcortical atrophies and increased volume of fluid spaces. These conclusions entailed studies on the status of cognitive functions in anorexia nervosa patients. Yet, the results of the studies carried out so far are not coherent, sometimes they are even contradictory. In some of them significant deviations were found within cognitive functioning: mostly these are disorders in attention, working memory and visual – spatial skills. In other studies the average level of individual cognitive functioning in the patients did not differ from control advisabiligroups or it was even higher. In most studies no correlation was found between neuropsychological parameters and the degree of emaciation, duration of the disease and severity of concomitant mental disorders. Furthermore, evidence was collected that some of the disorders of cognitive functions occurring in the active period subside during remission of anorexia nervosa symptoms, however some authors support the hypothesis about premorbid and pathogenetic nature of cognitive disorders in anorexia nervosa. Conclusions: In the course of anorexia nervosa the disorders of various cognitive functions were found which do not explicitly correlate with the clinical image and course of eating disorders, sometimes subsiding during remission of anorexia nervosa.