TY  - JOUR
AU  - Zimmermann, Eckart
AU  - Fink, Gereon R.
TI  - Numerosity perception after size adaptation
JO  - Scientific reports
VL  - 6
SN  - 2045-2322
CY  - London
PB  - Nature Publishing Group
M1  - FZJ-2016-07722
SP  - 32810 -
PY  - 2016
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000383559900001
C6  - pmid:27650296
DO  - DOI:10.1038/srep32810
UR  - https://juser.fz-juelich.de/record/825251
ER  -