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July 1930

Some Experiments of Peripheral Vision.

Arch NeurPsych. 1930;24(1):224-225. doi:10.1001/archneurpsyc.1930.02220130227025

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This is the sixth of a series of special reports. It is a contribution to the study of some phenomena of vision in the peripheral parts of the retina, and is divided into two sections. The first is concerned with the perception of movement, and, in particular, with the conditions under which the successive exposure of the peripheral retina to two discrete stimuli arouses an illusory perception of movement. The second section, which deals with the perception of form, gives an account of some experiments designed to determine the conditions under which simple geometric shapes can be recognized when viewed peripherally.

Part 1 is based on Riddoch's observation that during recovery from injuries to the occipital cortex which have given rise to restrictions of the visual field, a moving object may be perceived over considerable areas where there is no perception of the form of stationary objects, and that the