Broerse J, Dodwell P C, Ehrenstein W H, 1994, "Experiments on the afterimages of stimulus change (Dvorák 1870): A translation with commentary" Perception 23(10) 1135 – 1144
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Experiments on the afterimages of stimulus change (Dvorák 1870): A translation with commentary
Jack Broerse, Peter C Dodwell, Walter H Ehrenstein
Received 9 November 1993, in revised form 12 May 1994
Abstract. In 1870 Dvorák rejected Helmholtz's eye-movement account of motion aftereffects (MAEs) on the grounds that in was inconsistent with previous reports of nonuniform rotation ie MAEs induced with Plateau spirals. Subsequent observations with spirals that were modified to induce both expanding and contracting MAEs simultaneously, together with the use of stationary negative afterimages during induction and test, were offered as further counter-examples to the eye-movements hypothesis. Dvorák's conjectures that perception and misperception) of movement involves a unitary perceptual dimension of stimulus change also led him to investigate whether aftereffects comparable to MAEs could be induced along other stimulus dimensions in vision (luminance gradients), and in addition (gradients of pitch and intensity). It is suggested that Dvorák's observations, taken as a whole, may be interpreted as an attempt to provide evidence challenging the Helmholtzian traditions underpinning eye-movement accounts of MAEs. The nature and outcomes of these observations are provided in a translation of the original work, and are subsequently discussed in relation to some contemporary empirical counterparts.
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