The aperture problems in the Pulfrich effect

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The Pulfrich effect yields a perceived depth for horizontally moving objects but not for vertically moving ones. In this study the Pulfrich effect was measured by translating oblique lines seen through a circular window, which made motion direction ambiguous. Overlaying random dots that moved horizontally, vertically, or diagonally controlled the perceptual motion direction of the lines. In experiment 1, when the lines were seen to move horizontally, the effect was strongest in spite of the same physical motion of the lines. Experiment 2 was performed to test the above conditions again, excluding the Pulfrich effect of the dots on the depth of the lines. The overlaid dots were presented to one eye only. The result showed that the Pulfrich effect of the lines was persistently strong in spite of the perceptual changes in motion direction. Experiment 3 also showed that the Pulfrich depth was independent of the perceived horizontal speed in a plaid display. The Pulfrich effect was determined by measuring the horizontal disparity component, independently of the perceived motion direction. These results demonstrate that the aperture problems in motion and stereopsis in the Pulfrich effect are solved independently.

Original languageEnglish
Pages (from-to)367-375
Number of pages9
JournalPerception
Volume32
Issue number3
DOIs
Publication statusPublished - Dec 30 2003

Fingerprint

Experiments
Display devices
Depth Perception
Direction compound

All Science Journal Classification (ASJC) codes

  • Psychology(all)
  • Experimental and Cognitive Psychology

Cite this

The aperture problems in the Pulfrich effect. / Ito, Hiroyuki.

In: Perception, Vol. 32, No. 3, 30.12.2003, p. 367-375.

Research output: Contribution to journalArticle

Ito, Hiroyuki. / The aperture problems in the Pulfrich effect. In: Perception. 2003 ; Vol. 32, No. 3. pp. 367-375.
@article{99389a52e2cb48cdb34a57b0edc88d78,
title = "The aperture problems in the Pulfrich effect",
abstract = "The Pulfrich effect yields a perceived depth for horizontally moving objects but not for vertically moving ones. In this study the Pulfrich effect was measured by translating oblique lines seen through a circular window, which made motion direction ambiguous. Overlaying random dots that moved horizontally, vertically, or diagonally controlled the perceptual motion direction of the lines. In experiment 1, when the lines were seen to move horizontally, the effect was strongest in spite of the same physical motion of the lines. Experiment 2 was performed to test the above conditions again, excluding the Pulfrich effect of the dots on the depth of the lines. The overlaid dots were presented to one eye only. The result showed that the Pulfrich effect of the lines was persistently strong in spite of the perceptual changes in motion direction. Experiment 3 also showed that the Pulfrich depth was independent of the perceived horizontal speed in a plaid display. The Pulfrich effect was determined by measuring the horizontal disparity component, independently of the perceived motion direction. These results demonstrate that the aperture problems in motion and stereopsis in the Pulfrich effect are solved independently.",
author = "Hiroyuki Ito",
year = "2003",
month = "12",
day = "30",
doi = "10.1068/p3019",
language = "English",
volume = "32",
pages = "367--375",
journal = "Perception",
issn = "0301-0066",
publisher = "Pion Ltd.",
number = "3",

}

TY - JOUR

T1 - The aperture problems in the Pulfrich effect

AU - Ito, Hiroyuki

PY - 2003/12/30

Y1 - 2003/12/30

N2 - The Pulfrich effect yields a perceived depth for horizontally moving objects but not for vertically moving ones. In this study the Pulfrich effect was measured by translating oblique lines seen through a circular window, which made motion direction ambiguous. Overlaying random dots that moved horizontally, vertically, or diagonally controlled the perceptual motion direction of the lines. In experiment 1, when the lines were seen to move horizontally, the effect was strongest in spite of the same physical motion of the lines. Experiment 2 was performed to test the above conditions again, excluding the Pulfrich effect of the dots on the depth of the lines. The overlaid dots were presented to one eye only. The result showed that the Pulfrich effect of the lines was persistently strong in spite of the perceptual changes in motion direction. Experiment 3 also showed that the Pulfrich depth was independent of the perceived horizontal speed in a plaid display. The Pulfrich effect was determined by measuring the horizontal disparity component, independently of the perceived motion direction. These results demonstrate that the aperture problems in motion and stereopsis in the Pulfrich effect are solved independently.

AB - The Pulfrich effect yields a perceived depth for horizontally moving objects but not for vertically moving ones. In this study the Pulfrich effect was measured by translating oblique lines seen through a circular window, which made motion direction ambiguous. Overlaying random dots that moved horizontally, vertically, or diagonally controlled the perceptual motion direction of the lines. In experiment 1, when the lines were seen to move horizontally, the effect was strongest in spite of the same physical motion of the lines. Experiment 2 was performed to test the above conditions again, excluding the Pulfrich effect of the dots on the depth of the lines. The overlaid dots were presented to one eye only. The result showed that the Pulfrich effect of the lines was persistently strong in spite of the perceptual changes in motion direction. Experiment 3 also showed that the Pulfrich depth was independent of the perceived horizontal speed in a plaid display. The Pulfrich effect was determined by measuring the horizontal disparity component, independently of the perceived motion direction. These results demonstrate that the aperture problems in motion and stereopsis in the Pulfrich effect are solved independently.

UR - http://www.scopus.com/inward/record.url?scp=0038653501&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0038653501&partnerID=8YFLogxK

U2 - 10.1068/p3019

DO - 10.1068/p3019

M3 - Article

C2 - 12729385

AN - SCOPUS:0038653501

VL - 32

SP - 367

EP - 375

JO - Perception

JF - Perception

SN - 0301-0066

IS - 3

ER -