I thought cats purred meaning being very happy when petted. =^..^=
this study has classical signs of god-awful research. Not only does it fly in the face of centuries of human experience with cats (I mean really, the cat petting itself on the sleeping guy’s hand is pretty tell-tale), but I’ll bet the testing conditions blew. If they took the cat out of it’s home, to a strange place, to be touched in a strange way by strangers while hooked up to or near a strange machine - what the hell did ya think would happen?????? All you have proven is house cats are miserable outside their domain.