William Benjamin Carpenter

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William Benjamin Carpenter CB FRS (October 29, 1813–November 10, 1885) was an English physiologist and naturalist.

Contents 1 Biography 2 Adaptive unconscious 3 References 4 Works

[edit] Biography

Carpenter was born at Exeter, the eldest son of Dr Lant Carpenter. He attended medical classes at University College London, and then went to the University of Edinburgh, where he received his MD in 1839. The subject of his graduation thesis, The physiological inferences to be deduced from the structure of the nervous system of invertebrated animals, indicates a line of research which had fruition in his Principles of general and comparative physiology. His work in comparative neurology was recognized in 1844 by his election to the Royal Society, which awarded him a Royal medal in 1861; and his appointment as Fullerian professor of physiology in the Royal Institution in 1845 enabled him to exhibit his powers as a teacher and lecturer, his gift of ready speech and luminous interpretation placing him in the front rank of exponents, at a time when the popularization of science was in its infancy.

He worked hard as investigator, author, editor, demonstrator and lecturer throughout his life; but it was his researches in marine zoology, notably in the "lower" organisms, as Foraminifera and Crinoids, that were most valuable. These researches gave an impetus to deep-sea exploration, an outcome of which was in 1868 the oceanographic survey with HMS Lightning and later the more famous Challenger Expedition. He took a keen and laborious interest in the evidence adduced by Canadian geologists as to the organic nature of the so-called Eozoon Canadense, discovered in the Laurentian strata, and at the time of his death had nearly finished a monograph on the subject, defending the now discredited theory of its animal origin. He was an adept in the use of the microscope, and his popular treatise on The Microscope and its Revelations (1856) stimulated a host of observers to the use of the "added sense" with which it endowed man.

In 1856 Carpenter became registrar of the University of London, and held the office for twenty-three years; on his resignation in 1879 he was appointed Companion of the Order of the Bath in recognition of his services to education. Biologist as he was, Carpenter nevertheless made reservations as to the extension of the doctrine of evolution to man's intellectual and spiritual nature. In his Principles of mental physiology he asserted both the freedom of the will and the existence of the Ego, and one of his last public engagements was the reading of a paper in support of miracles. He died in London, from injuries occasioned by the accidental upsetting of a spirit-lamp.

[edit] Adaptive unconscious

Carpenter is considered as one of the founders of the modern theory of the adaptive unconscious. Together with William Hamilton and Thomas Laycock they provided the foundations on which today adaptive unconscious is based. They observed that the human perceptual system almost completely operates outside of conscious awareness. These same observations have been made by Hermann Helmholtz. Because these views were in conflict with the theories of Descartes, they were largely neglected, until the cognitive revolution of the 1950s. in 1874 Carpenter noticed that the more he studied the mechanism of thought, the more clear it became that it operates largely outside awareness. He noticed that the unconscious prejudices can be stronger than conscious thought and that they are more dangerous since they happen outside of conscious.

He also noticed that emotional reactions can occur outside of conscious until attention is drawn to them:

Our feelings towards persons and objects may undergo most important changes, without our being in the least degree aware, until we have our attention directed to our own mental state, of the alteration which has taken place in them. (Carpenter, 1874)

See also: Sigmund Freud, William James, Unconscious mind.

[edit] References

• This article incorporates text from the Encyclopædia Britannica Eleventh Edition, a publication now in the public domain.

1. Fullerian Professorships

[edit] Works

• Carpenter, W.B., "On the Influence of Suggestion in Modifying and directing Muscular Movement, independently of Volition", Royal Institution of Great Britain, (Proceedings), 1852, (12 March 1852), pp.147-153.

• Carpenter, William Benjamin. _Principles of Mental Physiology_. 2nd ed. London: Henry S King, 1875. pp 24-8, 516-7, 519-20, 539-41.