[Memory disorders in senile dementia].

Being induced by a certain external cause, coherent ideas of the events gone by may occur in the consciousness of senile dementia patients. These observations suggest that memory stores in senile dementia remain outside the destructive action of the senile atrophic process, in any case until the expressive speech is preserved. Storage of the information acquired before the appearance of the symptoms of dementia is unlikely to depend on the degree of its personality importance. Before it becomes strongly manifest, senile dementia does not prevent the stamping on the person's memory, at least of part of new information (possibly, of only emotionally significant). Such material may also be stored in the patients' memory even in case of pronounced dementia. Difficulties in active reproduction of the ideas available in memory stores can already be seen at the early stages, becoming more remarkable as the disease progresses.