SPATIO_TEMPORAL DISORDER. Illustration of loss of orientation in time, in the case of certain dementias and Alzheimer´s disease. The marks of the clock are more or less spaced out, expressing the loss of time perception. This loss of temporal perception is used in the Folstein test also named MMS : Mini Mental State to diagnose dementias and Alzheimer´s disease. It is asked to the patient to indicate the year, the month and the day. Another test, clock drawing test, is also used to diagnose deme