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Axis of elongation can determine reference frames for object perception.
Can J Exp Psychol. 1996 Sep; 50(3):270-9.CJ

Abstract

Object perception remains constant in the face of much retinal image variability. One way to achieve such constancy is to represent objects with respect to a reference frame, and many theories of object recognition assume that, among other factors, observers use objects' primary axes of elongation to derive reference frames. However, the limited research directly addressing this assumption suggests that the role of axis of elongation may not be as central as previously though (Palmer, 1990; Quinlan & Humphreys, 1993). The present study re-examines elongation's role in determining reference frames, adapting Palmer's paradigm to determine the extent to which surrounds bias the perception of ambiguously oriented objects: equilateral triangles. When surrounds were oriented inconsistently with experimentally constrained correct responses, response times increased with surrounds' elongation. These results hold for both symmetric and asymmetric surrounds, suggesting that elongation alone is sufficient to construct a reference frame for object perception.

Authors+Show Affiliations

Department of Psychology, University of Toronto, Ontario. sekuler@psych.utoronto.ca

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

8931353

Citation

Sekuler, A B.. "Axis of Elongation Can Determine Reference Frames for Object Perception." Canadian Journal of Experimental Psychology = Revue Canadienne De Psychologie Experimentale, vol. 50, no. 3, 1996, pp. 270-9.
Sekuler AB. Axis of elongation can determine reference frames for object perception. Can J Exp Psychol. 1996;50(3):270-9.
Sekuler, A. B. (1996). Axis of elongation can determine reference frames for object perception. Canadian Journal of Experimental Psychology = Revue Canadienne De Psychologie Experimentale, 50(3), 270-9.
Sekuler AB. Axis of Elongation Can Determine Reference Frames for Object Perception. Can J Exp Psychol. 1996;50(3):270-9. PubMed PMID: 8931353.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Axis of elongation can determine reference frames for object perception. A1 - Sekuler,A B, PY - 1996/9/1/pubmed PY - 1996/9/1/medline PY - 1996/9/1/entrez SP - 270 EP - 9 JF - Canadian journal of experimental psychology = Revue canadienne de psychologie experimentale JO - Can J Exp Psychol VL - 50 IS - 3 N2 - Object perception remains constant in the face of much retinal image variability. One way to achieve such constancy is to represent objects with respect to a reference frame, and many theories of object recognition assume that, among other factors, observers use objects' primary axes of elongation to derive reference frames. However, the limited research directly addressing this assumption suggests that the role of axis of elongation may not be as central as previously though (Palmer, 1990; Quinlan & Humphreys, 1993). The present study re-examines elongation's role in determining reference frames, adapting Palmer's paradigm to determine the extent to which surrounds bias the perception of ambiguously oriented objects: equilateral triangles. When surrounds were oriented inconsistently with experimentally constrained correct responses, response times increased with surrounds' elongation. These results hold for both symmetric and asymmetric surrounds, suggesting that elongation alone is sufficient to construct a reference frame for object perception. SN - 1196-1961 UR - https://www.unboundmedicine.com/medline/citation/8931353/Axis_of_elongation_can_determine_reference_frames_for_object_perception_ L2 - http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=8931353.ui DB - PRIME DP - Unbound Medicine ER -