Universität zu Köln

Zimmermann, Eckart ORCID: 0000-0002-1964-2711 and Fink, Gereon R. ORCID: 0000-0002-8230-1856 (2016). Numerosity perception after size adaptation. Sci Rep, 6. LONDON: NATURE PUBLISHING GROUP. ISSN 2045-2322

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Abstract

While some researchers propose the existence of a special numerosity sense, others challenge this view and argue that numerosity is derived from low-level features as density information. Here, we used size adaptation to manipulate the apparent area size of an object set without changing its physical density. After size adaptation, two probe patches were shown, each of which contained a specific numerosity of dots. Subjects were required to report, which probe patch contained more dots. Numerosity perception was compared between conditions where probe patches were adapted to appear smaller or larger. Size adaptation affected numerosity perception in a logarithmic fashion, increasing with the numerosity in the probe patch. No changes in density perception were found after size adaptation. Data suggest that size and density information play only a minor role in the estimation of low numerosities. In stark contrast, high numerosities strongly depend on size and density information. The data reinforce recent claims of separate mechanism for the perception of low and high numerosities.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Zimmermann, Eckart UNSPECIFIED orcid.org/0000-0002-1964-2711 UNSPECIFIED Fink, Gereon R. UNSPECIFIED orcid.org/0000-0002-8230-1856 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-262178
DOI:	10.1038/srep32810
Journal or Publication Title:	Sci Rep
Volume:	6
Date:	2016
Publisher:	NATURE PUBLISHING GROUP
Place of Publication:	LONDON
ISSN:	2045-2322
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language TOPOGRAPHIC REPRESENTATION; VISUAL SENSE; NUMBER; PARIETAL Multiple languages Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/26217