Forgetfulness might depend on time of day

(University of Tokyo) Can't remember something? Try waiting until later in the day. Many memory researchers study how new memories are made. The biology of forgetting is more complicated to study because of the difficulties of distinguishing between not knowing and not recalling. UTokyo researchers identified a gene in mice that seems to influence memory recall at different times of day and tracked how it causes mice to be more forgetful just before they normally wake up.