exteroceptorn.

1906 C. S. Sherrington Integrative Action Nerv. Syst. 130 The reaction of the animal to stimulation of one of its extero-ceptors excites certain tissues, and the activity thus produced in these latter tissues excites in them their receptors, which are proprioceptors.

1927 J. B. S. Haldane & J. S. Huxley Animal Biol. i. 24 The exteroceptor organs are the windows of the animal into the outside world.

1964 J. Z. Young Model of Brain xiv. 232 The same circuits also serve to maintain the cells that were stimulated by the exteroceptor in a suitably receptive state to receive the signals that indicate results.

1906 C. S. Sherrington Integrative Action Nerv. Syst. 130 There exist..two primary distributions of the receptor organs, each a field in certain respects fundamentally different from the other. The surface field lies freely open to the numberless vicissitudes of the environment... This field, extero-ceptive as it may be called, is rich in the number and variety of receptors which adaptation has evolved in it.

1927 J. B. S. Haldane & J. S. Huxley Animal Biol. v. 123 Receptors and nerves with this function are called proprioceptive, whilst those whose stimuli come from outside are called exteroceptive.

1932 S. Zuckerman Social Life Monkeys & Apes xvii. 268 The multitude of exteroceptive stimuli presented by the social activities of its fellows.

1968 New Scientist 7 Nov. 315/1 Exteroceptive feedback yields information about events on the surface of the skin through the skin senses such as touch and heat.