Dyschronometria is a sign of cerebellar ataxia. which is when the cerebellum has been damaged and does not function to its fullest ability. It is when a person can not accurately estimate the amount of time that has passed. Dyschronometria often takes form in forgetting basic time keeping unless a timer is set, such as when cooking for example. It is an autosomal dominant cerebellar ataxia (ADCA) which usually means the ataxia is a less debilitating than an autosomal recessive cerebellar ataxia, or an ataxia that is linked to the X-chromosome.