Cargando…

Small-angle attraction in the tilt illusion

The tilt illusion (TI) describes the phenomenon in which a surround inducer grating of a particular orientation influences the perceived orientation of a central test grating. Typically, inducer-test orientation differences of 5 to 40 degrees cause the test orientation to appear shifted away from th...

Descripción completa

Detalles Bibliográficos
Autores principales: Akgöz, Ayşe, Gheorghiu, Elena, Kingdom, Frederick A. A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Association for Research in Vision and Ophthalmology 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9344215/
https://www.ncbi.nlm.nih.gov/pubmed/35900725
http://dx.doi.org/10.1167/jov.22.8.16
_version_ 1784761169967316992
author Akgöz, Ayşe
Gheorghiu, Elena
Kingdom, Frederick A. A.
author_facet Akgöz, Ayşe
Gheorghiu, Elena
Kingdom, Frederick A. A.
author_sort Akgöz, Ayşe
collection PubMed
description The tilt illusion (TI) describes the phenomenon in which a surround inducer grating of a particular orientation influences the perceived orientation of a central test grating. Typically, inducer-test orientation differences of 5 to 40 degrees cause the test orientation to appear shifted away from the inducer orientation (i.e. repulsion). For orientation differences of 60 to 90 degrees, the inducer typically causes the test grating orientation to appear shifted toward the inducer orientation, termed here “large-angle” attraction. Both repulsion and large-angle attraction effects have been observed in contrast-modulated as well as luminance-modulated grating patterns. Here, we show that a secondary, “small-angle” 0 to 10 degrees attraction effect is observed in contrast-modulated and orientation-modulated gratings, as well as in luminance-modulated gratings that are relatively low in spatial frequency, low in contrast, or contain added texture. The observed small-angle attraction, which can exceed in magnitude that of the repulsion and large-angle attraction effects, is dependent on the spatial phase relationship between the inducer and test, being maximal when in-phase. Both small-angle attraction and repulsion effects are reduced when a gap is introduced between the test and inducer. Our findings suggest that small-angle attraction in the TI is a result of assimilation of the inducer pattern into the receptive fields of neurons sensitive to the test.
format Online
Article
Text
id pubmed-9344215
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher The Association for Research in Vision and Ophthalmology
record_format MEDLINE/PubMed
spelling pubmed-93442152022-08-03 Small-angle attraction in the tilt illusion Akgöz, Ayşe Gheorghiu, Elena Kingdom, Frederick A. A. J Vis Article The tilt illusion (TI) describes the phenomenon in which a surround inducer grating of a particular orientation influences the perceived orientation of a central test grating. Typically, inducer-test orientation differences of 5 to 40 degrees cause the test orientation to appear shifted away from the inducer orientation (i.e. repulsion). For orientation differences of 60 to 90 degrees, the inducer typically causes the test grating orientation to appear shifted toward the inducer orientation, termed here “large-angle” attraction. Both repulsion and large-angle attraction effects have been observed in contrast-modulated as well as luminance-modulated grating patterns. Here, we show that a secondary, “small-angle” 0 to 10 degrees attraction effect is observed in contrast-modulated and orientation-modulated gratings, as well as in luminance-modulated gratings that are relatively low in spatial frequency, low in contrast, or contain added texture. The observed small-angle attraction, which can exceed in magnitude that of the repulsion and large-angle attraction effects, is dependent on the spatial phase relationship between the inducer and test, being maximal when in-phase. Both small-angle attraction and repulsion effects are reduced when a gap is introduced between the test and inducer. Our findings suggest that small-angle attraction in the TI is a result of assimilation of the inducer pattern into the receptive fields of neurons sensitive to the test. The Association for Research in Vision and Ophthalmology 2022-07-28 /pmc/articles/PMC9344215/ /pubmed/35900725 http://dx.doi.org/10.1167/jov.22.8.16 Text en Copyright 2022 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
spellingShingle Article
Akgöz, Ayşe
Gheorghiu, Elena
Kingdom, Frederick A. A.
Small-angle attraction in the tilt illusion
title Small-angle attraction in the tilt illusion
title_full Small-angle attraction in the tilt illusion
title_fullStr Small-angle attraction in the tilt illusion
title_full_unstemmed Small-angle attraction in the tilt illusion
title_short Small-angle attraction in the tilt illusion
title_sort small-angle attraction in the tilt illusion
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9344215/
https://www.ncbi.nlm.nih.gov/pubmed/35900725
http://dx.doi.org/10.1167/jov.22.8.16
work_keys_str_mv AT akgozayse smallangleattractioninthetiltillusion
AT gheorghiuelena smallangleattractioninthetiltillusion
AT kingdomfrederickaa smallangleattractioninthetiltillusion