Refreshed their memory - Idioms by The Free Dictionary
refresh (one's) memory (redirected from refreshed their memory)
refresh (one's) memory
To remind one (about something); to help one to recall something. I'm sorry, I don't remember our discussion about that. You'll have to refresh my memory. You don't remember how much? Allow me to refresh your memory. You owe me $300.
reˌfresh somebody’s/your ˈmemory remind somebody/yourself of something that you have forgotten: Refresh my memory, will you? How many children has he got? ♢ Before I interviewed Ms Waters, I read her book again just to refresh my memory.