Horace BarlowHorace Barlow was a British neuroscientist who specialized in research on vision. He wrote two seminal articles on the neuroscience of vision. The first was just a couple of years before the pioneering work on the frog's eye by David Hubel, Torsten Wiesel, Jerome Lettvin, Warren McCulloch, Walter Pitts, and Humberto Maturana, Barlow identified neurons in the frog's brain that fire in response to particular visual stimuli.
Barlow's second seminal article was Single Units and Sensation: A Neuron Doctrine for Perceptual Psychology? in 1972. In it, Barlow began with five dogmas
1. To understand nervous function one needs to look at interactions at a cellular level, rather than either a more macroscopic or microscopic level, because behaviour depends upon the organized pattern of these intercellular interactions. 2. The sensory system is organized to achieve as complete a representation of the sensory stimulus as possible with the minimum number of active neurons. 3. Trigger features of sensory neurons are matched to redundant patterns of stimulation by experience as well as by developmental processes. 4. Perception corresponds to the activity of a small selection from the very numerous high-level neurons, each of which corresponds to a pattern of external events of the order of complexity of the events symbolized by a word. 5. High impulse frequency in such neurons corresponds to high certainty that the trigger feature is present. The development of the concepts leading up to these speculative dogmas, their experimental basis, and some of their limitations are discussed.In David Marr's "Epilogue" to his Vision book, Marr wrote an imagined conversation between himself, his colleague Tomaso Poggio, and Francis Crick. He began with the work of Horace Barlow.