Challenging the distribution shift: Statically-induced direction illusion implicates differential processing of object-relative and non-object-relative motion

Max Farrell-Whelan, Peter Wenderoth, Kevin R. Brooks

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The direction illusion is the phenomenal exaggeration of the angle between the drift directions, typically, of two superimposed sets of random dots. The direction illusion is commonly attributed to mutual inhibition between direction-selective cell populations (distribution-shift model). A second explanation attributes the direction illusion to the differential processing of relative and non-relative motion components (differential processing model). Our first experiment demonstrates that, as predicted by the differential processing model, a static line can invoke a misperception of direction in a single set of dots - a phenomenon we refer to as the statically-induced direction illusion. In a second experiment, we find that the orientation of a static line can also influence the size of the conventional direction illusion. A third experiment eliminates the possibility that these results can be explained by the presence of motion streaks. While the results of these experiments are in agreement with the predictions made by the differential processing model, they pose serious problems for the distribution-shift account of shifts in perceived direction.

LanguageEnglish
Pages10-18
Number of pages9
JournalVision Research
Volume58
DOIs
Publication statusPublished - 1 Apr 2012

Fingerprint

Direction compound
Demography
Inhibition (Psychology)

Cite this

@article{4ee2f3f15ff74829927291a1012ed005,
title = "Challenging the distribution shift: Statically-induced direction illusion implicates differential processing of object-relative and non-object-relative motion",
abstract = "The direction illusion is the phenomenal exaggeration of the angle between the drift directions, typically, of two superimposed sets of random dots. The direction illusion is commonly attributed to mutual inhibition between direction-selective cell populations (distribution-shift model). A second explanation attributes the direction illusion to the differential processing of relative and non-relative motion components (differential processing model). Our first experiment demonstrates that, as predicted by the differential processing model, a static line can invoke a misperception of direction in a single set of dots - a phenomenon we refer to as the statically-induced direction illusion. In a second experiment, we find that the orientation of a static line can also influence the size of the conventional direction illusion. A third experiment eliminates the possibility that these results can be explained by the presence of motion streaks. While the results of these experiments are in agreement with the predictions made by the differential processing model, they pose serious problems for the distribution-shift account of shifts in perceived direction.",
author = "Max Farrell-Whelan and Peter Wenderoth and Brooks, {Kevin R.}",
year = "2012",
month = "4",
day = "1",
doi = "10.1016/j.visres.2012.01.018",
language = "English",
volume = "58",
pages = "10--18",
journal = "Vision Research",
issn = "0042-6989",
publisher = "Elsevier",

}

Challenging the distribution shift : Statically-induced direction illusion implicates differential processing of object-relative and non-object-relative motion. / Farrell-Whelan, Max; Wenderoth, Peter; Brooks, Kevin R.

In: Vision Research, Vol. 58, 01.04.2012, p. 10-18.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Challenging the distribution shift

T2 - Vision Research

AU - Farrell-Whelan, Max

AU - Wenderoth, Peter

AU - Brooks, Kevin R.

PY - 2012/4/1

Y1 - 2012/4/1

N2 - The direction illusion is the phenomenal exaggeration of the angle between the drift directions, typically, of two superimposed sets of random dots. The direction illusion is commonly attributed to mutual inhibition between direction-selective cell populations (distribution-shift model). A second explanation attributes the direction illusion to the differential processing of relative and non-relative motion components (differential processing model). Our first experiment demonstrates that, as predicted by the differential processing model, a static line can invoke a misperception of direction in a single set of dots - a phenomenon we refer to as the statically-induced direction illusion. In a second experiment, we find that the orientation of a static line can also influence the size of the conventional direction illusion. A third experiment eliminates the possibility that these results can be explained by the presence of motion streaks. While the results of these experiments are in agreement with the predictions made by the differential processing model, they pose serious problems for the distribution-shift account of shifts in perceived direction.

AB - The direction illusion is the phenomenal exaggeration of the angle between the drift directions, typically, of two superimposed sets of random dots. The direction illusion is commonly attributed to mutual inhibition between direction-selective cell populations (distribution-shift model). A second explanation attributes the direction illusion to the differential processing of relative and non-relative motion components (differential processing model). Our first experiment demonstrates that, as predicted by the differential processing model, a static line can invoke a misperception of direction in a single set of dots - a phenomenon we refer to as the statically-induced direction illusion. In a second experiment, we find that the orientation of a static line can also influence the size of the conventional direction illusion. A third experiment eliminates the possibility that these results can be explained by the presence of motion streaks. While the results of these experiments are in agreement with the predictions made by the differential processing model, they pose serious problems for the distribution-shift account of shifts in perceived direction.

UR - http://www.scopus.com/inward/record.url?scp=84858742232&partnerID=8YFLogxK

U2 - 10.1016/j.visres.2012.01.018

DO - 10.1016/j.visres.2012.01.018

M3 - Article

VL - 58

SP - 10

EP - 18

JO - Vision Research

JF - Vision Research

SN - 0042-6989

ER -