Deterioration of intellectual faculties , such as memory , concentration , and judgment , resulting from an organic disease or a disorder of the brain . it is often accompanied by emotional disturbance and personality changes 痴呆智力能力,例如记忆力、精神集中的能力、判断力等的恶化,常因某器官病疾或头脑紊乱,引起经常伴随着情感波动和性情的变化