Misalignment effects in 3-D versions of Poggendorff displays

Authors: Liu, C.H. and Kennedy, J.M.

Journal: Perception & Psychophysics

Volume: 57

Issue: 3

Pages: 409-415

eISSN: 1532-5962

ISSN: 0031-5117

DOI: 10.3758/BF03213065

Abstract:

Strong misalignment effects are found in three-dimensional (3-D) versions of Poggendorff displays viewed binocularly. The components of the standard 2-D Poggendorff figure-the parallels and the oblique segments-were presented in 3-D depth as a flat rectangular object with occluding edges and an oblique line situated behind the object. Three experiments investigated the misalignment effects under three different observation instructions: Subjects were told to look at the oblique (Experiment 1), at the rectangle (Experiment 2), or at the background (Experiment 3). Experiments 1 and 2 examined the effects on judgments of alignment of varying the distance in depth that separates the oblique from the rectangle. Experiment 3 examined the effects of varying the distance between the fixated background and the 3-D Poggendorff figure. Both standard and reversed misalignment effects were obtained. When the viewing condition produces crossed disparity for the oblique, perceived misalignment occurs in the usual Poggendorff direction, but it is reversed with uncrossed disparity. Moreover, the amount of misalignment is related to the amount of disparity, and it can be much stronger than is usual in the 2-D versions of the Poggendorff. The misalignment effects can be explained by binocular integration to produce a single cyclopean image. © 1995 Psychonomic Society, Inc.

Source: Scopus

Misalignment effects in 3-D versions of Poggendorff displays.

Authors: Liu, C.H. and Kennedy, J.M.

Journal: Percept Psychophys

Volume: 57

Issue: 3

Pages: 409-415

ISSN: 0031-5117

DOI: 10.3758/bf03213065

Abstract:

Strong misalignment effects are found in three-dimensional (3-D) versions of Poggendorff displays viewed binocularly. The components of the standard 2-D Poggendorff figure--the parallels and the oblique segments--were presented in 3-D depth as a flat rectangular object with occluding edges and an oblique line situated behind the object. Three experiments investigated the misalignment effects under three different observation instructions: Subjects were told to look at the oblique (Experiment 1), at the rectangle (Experiment 2), or at the background (Experiment 3). Experiments 1 and 2 examined the effects on judgments of alignment of varying the distance in depth that separates the oblique from the rectangle. Experiment 3 examined the effects of varying the distance between the fixated background and the 3-D Poggendorff figure. Both standard and reversed misalignment effects were obtained. When the viewing condition produces crossed disparity for the oblique, perceived misalignment occurs in the usual Poggendorff direction, but it is reversed with uncrossed disparity. Moreover, the amount of misalignment is related to the amount of disparity, and it can be much stronger than is usual in the 2-D versions of the Poggendorff. The misalignment effects can be explained by binocular integration to produce a single cyclopean image.

Source: PubMed

Preferred by: Changhong Liu

MISALIGNMENT EFFECTS IN 3-D VERSIONS OF POGGENDORFF DISPLAYS

Authors: LIU, C.H. and KENNEDY, J.M.

Journal: PERCEPTION & PSYCHOPHYSICS

Volume: 57

Issue: 3

Pages: 409-415

ISSN: 0031-5117

DOI: 10.3758/BF03213065

Source: Web of Science (Lite)

Misalignment effects in 3-D versions of Poggendorff displays.

Authors: Liu, C.H. and Kennedy, J.M.

Journal: Perception & psychophysics

Volume: 57

Issue: 3

Pages: 409-415

eISSN: 1532-5962

ISSN: 0031-5117

DOI: 10.3758/bf03213065

Abstract:

Strong misalignment effects are found in three-dimensional (3-D) versions of Poggendorff displays viewed binocularly. The components of the standard 2-D Poggendorff figure--the parallels and the oblique segments--were presented in 3-D depth as a flat rectangular object with occluding edges and an oblique line situated behind the object. Three experiments investigated the misalignment effects under three different observation instructions: Subjects were told to look at the oblique (Experiment 1), at the rectangle (Experiment 2), or at the background (Experiment 3). Experiments 1 and 2 examined the effects on judgments of alignment of varying the distance in depth that separates the oblique from the rectangle. Experiment 3 examined the effects of varying the distance between the fixated background and the 3-D Poggendorff figure. Both standard and reversed misalignment effects were obtained. When the viewing condition produces crossed disparity for the oblique, perceived misalignment occurs in the usual Poggendorff direction, but it is reversed with uncrossed disparity. Moreover, the amount of misalignment is related to the amount of disparity, and it can be much stronger than is usual in the 2-D versions of the Poggendorff. The misalignment effects can be explained by binocular integration to produce a single cyclopean image.

Source: Europe PubMed Central

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