VOA慢速英语:对大脑的电击可能有助于老年人的记忆

stimulating – v. making something more active

rhythm – n. a regular, repeated pattern of sounds or movements
certain – adj. used to refer to something or someone that is not named specifically

basic – adj. forming or relating to the most important part of something
neuroscientist(s) – n. an expert in the scientific study of nerves and especially of how nerves affect learning and behavior