There is a “purr center” in the lateral hypothalamic region of cats that was mapped out by electrical stimulation in the late 1940s by Dr. Frederic Andrew Gibbs

There is a “purr center” in the lateral hypothalamic region of cats that was mapped out by electrical stimulation in the late 1940s by Dr. Frederic Andrew Gibbs and his spouse Erna L. Gibbs. Fred was a famous EEG expert. They published their “purr center” work in Journal of Neurophysiology long before a pleasure center was “officially” discovered by James Olds and Peter Milner in the 1950s in studies of rats. I cannot find the citation in PubMed but I recall the year was circa 1948.