I agree with Joelline and Wongfei, although the practice of doing homework isn't usually associated with refreshing one's memory, in my way of thinking. It cements things in memory more than it refreshes one's memory. I may be straining at gnats here, but it just sounds marginally off to me.
More commonly, in a courtroom, after taking the witness stand, Mrs. Jones says she can't remember what she was doing on the night of August 13. The prosecution holds up a photograph of her in bed with her lover and says: "Does this refresh your memory?"
