The Influence of Visual Illusion Perception on Numerosity Estimation Could Be Evolutionary Conserved: Exploring the Numerical Delboeuf Illusion in Humans (Homo Sapiens) and Fish (Poecilia Reticulata)

2022 ◽  
Author(s):  
Maria Santacà ◽  
Umberto Granziol
Keyword(s):  
Poecilia Reticulata ◽  
Visual Illusion ◽  
Homo Sapiens ◽  
Numerosity Estimation ◽  
Delboeuf Illusion

scholarly journals Illusory size perception with stimuli from animal experiments of surround modulation

2020 ◽  
Author(s):  
Daniel Gramm Kristensen ◽  
Kristian Sandberg
Keyword(s):  
Visual Information ◽  
Animal Studies ◽  
Visual Illusion ◽  
Animal Experiments ◽  
Low Frequency ◽  
Size Perception ◽  
Illusion Effect ◽  
Significant Difference ◽  
Small Set ◽  
Delboeuf Illusion

Visual illusions have long been studied because the illusory effect they induce is believed to tell us something important on how the visual system processes visual information. Here, we modified a classic visual illusion, the Delboeuf illusion, so that it resembled a type of stimulus commonly used in experiments investigating surround modulation. We then performed a small set of psychophysical experiments in order to determine if the classical Delboeuf illusion effect, i.e. a change in the perceived size of an object, could be observed in these altered stimuli. In four conditions, we created stimuli that either had a high or low frequency surround in addition to being presented with a proximal thin surround or a distal thick surround. We found a significant difference in perceived object size for all four conditions compared to control indicating the presence of an illusion, and we discuss these findings in relation to existing literature from electrophysiological animal studies.

Guppies, Poecilia reticulata, perceive a reversed Delboeuf illusion

2019 ◽  
Vol 22 (3) ◽  
pp. 291-303 ◽  
Author(s):  
Tyrone Lucon-Xiccato ◽  
Maria Santacà ◽  
Maria Elena Miletto Petrazzini ◽  
Christian Agrillo ◽  
Marco Dadda
Keyword(s):  
Poecilia Reticulata ◽  
Delboeuf Illusion

Use of the Japanese Medaka ( Oryzias latipes ) and Guppy ( Poecilia reticulata ) in Carcinogenesis Testing Under National Toxicology Program Protocols

2003 ◽  
Vol 31 (1) ◽  
pp. 88-91 ◽  
Author(s):  
William E. Hawkins ◽  
William W. Walker ◽  
John W. Fournie ◽  
C. Steve Manning ◽  
Rena M. Krol
Keyword(s):  
Poecilia Reticulata ◽  
Oryzias Latipes ◽  
Japanese Medaka ◽  
National Toxicology Program
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