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Perception. 2008;37(4):636-8.

Ibn al-Haytham and psychophysics.

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  • 1McGill Vision Research, Department of Ophthalmology, Royal Victoria Hospital, Montréal, Québec, Canada.


Persian scholar Ibn al-Haytham ('Alhazen') has rightly been credited with many advances in optics and vision science, but recent spurious claims that he is the 'founder of psychophysics' rest upon unsupported assertions, a conflation of psychophysics with the wider discipline of psychology, and semantic arguments over what it is to 'found' a school of thought.

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