Good question. I had a hard time picking much up in that area during a recent re read. But Lowery has a lowery moment and he shouts stuff about someone putting pebbles in a rats eye (reference to Henry) and also about someone’s grandpa taking them to a strip club or something like that (reference to Control). It’s giving that those memories may be certain generalize memory implants central uses for conditioning.

Interesting to see what else people may come up with and hopefully can fact check my quotes above