Insular cortex – Wikipedia. 2017; Available from: https://en.wikipedia.org/wiki/Insular_cortex.
174
Kalueff, A.V., J. L. La Porte, and C. L. Bergner, Neurobiology of grooming behavior. 2010: Cambridge University Press.
175
Claxton, G., Why can’t we tickle ourselves? Perceptual and Motor Skills, 1975. 41 (1): p. 335–338.
176
Keverne, E.B., N. D. Martensz, and B. Tuite, Beta-endorphin concentrations in cerebrospinal fluid of monkeys are influenced by grooming relationships. Psychoneuroendocrinology, 1989. 14 (1): p. 155–161.
