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Visual orientation illusions: Global mechanisms involved in hierarchical effects and frames of reference

journal contribution
posted on 2023-05-17, 18:46 authored by Daini, R, Wenderoth, P, Smith, ST
Five experiments were conducted in order to determine which of two hypotheses, initially proposed by Rock (1990), accounts for interactions between oriented elements in a visual scene. We also explored the suggestion that two hypothetical processes--namely, frame of reference and hierarchical organization--describe phenomena arising from distinct mechanisms (Spinelli, Antonucci, Daini, Martelli, & Zoccolotti, 1999). Double inducing stimulus versions of one-dimensional and two-dimensional tilt illusions, the rod-and-frame illusion, and combinations of these were used. Our data suggest that both hypotheses can predict orientation interactions in conditions in which only one mechanism--namely, the global visual mechanism of symmetry axes extraction (Wenderoth & Beh, 1977)--is activated. Which hypothesis is appropriate to predict the perceived orientation depends on some physical features of the objects.

History

Publication title

Perception and Psychophysics

Volume

65

Issue

5

Pagination

770-778

ISSN

0031-5117

Department/School

School of Health Sciences

Publisher

Psychonomic Soc Inc

Place of publication

1710 Fortview Rd, Austin, USA, Tx, 78704

Repository Status

  • Restricted

Socio-economic Objectives

Clinical health not elsewhere classified

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