Freezing C. elegans worms at -80°C after teaching them an association could test whether memory can be maintained in the absence of electrical activity.

“My idea was, and I tried to convince students to do it for ten years, is to take the worms, teach them this assocIation to dislike the odor that they innately like, and then just put the worms in -80 and freeze them, freeze them completely, thaw them and see whether they still remember after they are thawed.”