Texture density adaptation and visual number revisited

Burr and Ross [1] have recently proposed that the visual dimension of number is itself directly adaptable. The aftereffect they describe is one that my colleagues and I previously used to investigate the perception of texture density [2–4]. Burr and Ross [1] argue that the effect is new because it c...

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Bibliographic Details
Published in:Current biology 2008-09, Vol.18 (18), p.R855-R856
Main Author: Durgin, Frank H.
Format: Article
Language:English
Subjects:
Functional Laterality
Humans
Touch
Visual Perception
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Summary:Burr and Ross [1] have recently proposed that the visual dimension of number is itself directly adaptable. The aftereffect they describe is one that my colleagues and I previously used to investigate the perception of texture density [2–4]. Burr and Ross [1] argue that the effect is new because it concerns visual number, rather than texture density, but they did not report critical tests to support this claim. Here, I shall briefly describe the striking similarity between our prior work and that of Burr and Ross [1], and discuss how some of our results rule out Burr and Ross's [1] interpretation that numerosity, and not density, is at play. I shall also provide a new demonstration that confirms that these effects are based on density, using a display that explicitly dissociates density from numerosity. Taken together, this line of arguments suggests that Burr and Ross's [1] recent study may best be thought of as replicating support within a well-established line of work on texture density.
ISSN:0960-9822
1879-0445
DOI:10.1016/j.cub.2008.07.053