Horace Barlow 842440 210285508 2008-05-05T09:21:26Z Richard Pinch 1902818 deefaultsoirt [[Image:Horace Barlow.jpg|thumb|Horace Barlow at the [[Ratio Club]], between 1949 and 1954.]] Professor '''Horace Basil Barlow''' [[Fellow of the Royal Society|FRS]] (born [[December 8]], [[1921]]) is a [[UK|British]] visual neuroscientist. In 1953 Barlow discovered that the [[frog]] brain has [[neurons]] which fire in response to specific visual stimuli. This was a precursor to the work of [[Hubel]] and [[Torsten_Wiesel|Wiesel]] on visual receptive fields in the visual cortex. He has made a long study of visual inhibition, the process whereby a neuron firing in response to one group of retinal cells can inhibit the firing of another neuron; this allows perception of relative contrast. In 1961 Barlow wrote a seminal article where he asked what the computational aims of the visual system are. He concluded that one of the main aims of visual processing is the reduction of redundancy. While the brightnesses of neighbouring points in images are usually very similar, the [[Retina]] reduces this redundancy. His work thus was central to the field of [[statistics of natural scenes]] that relates the statistics of images of real world scenes to the properties of the nervous system. Barlow and his co-workers also did substantial work in the field of [[factorial code]]s. The goal was to encode images with [[statistically]] [[redundant]] components or pixels such that the code components are [[statistically independent]]. Such codes are hard to find but highly useful for purposes of image [[classification]] etc. Barlow is the son of the civil servant Sir [[Alan Barlow]] and Lady [[Nora Darwin]], and thus the great-grandson of [[Charles Darwin]] (see [[Darwin — Wedgwood family]]). Barlow is a fellow of [[Trinity College, Cambridge|Trinity College]], [[University of Cambridge]]. He received the 1993 [[Australia Prize]] for his research into the mechanisms of visual perception. == Selected References == *H. B. Barlow. Possible principles underlying the transformation of sensory messages. Sensory Communication, pp. 217-234, 1961 *H. B. Barlow. Single units and sensation: A neuron doctrine for perceptual psychology? Perception 1(4) 371 – 394, 1972 *H. B. Barlow, T. P. Kaushal, and G. J. Mitchison. Finding minimum entropy codes. Neural Computation, 1:412-423, 1989. ==External links== * [http://www.trin.cam.ac.uk/horacebarlow/ List and full text of Horace Barlow publications] *[[Australia Prize]] [https://sciencegrants.dest.gov.au/SciencePrize/Pages/Doc.aspx?name=previous_winners/Aust1993Barlow.htm Biography of Barlow] * [http://neurotree.org/neurotree/tree.php?pid=21 Horace Barlow in Neurotree] {{DEFAULTSORT:Barlow, Horace Basil}} [[Category:1921 births]] [[Category:Living people]] [[Category:Darwin-Wedgwood family]] [[Category:Fellows of the Royal Society]] [[Category:Fellows of Trinity College, Cambridge]] [[Category:Australian neuroscientists]] {{UK-academic-bio-stub}}