Effects of Line Separation and Exploration on the Visual and Haptic Detection of Symmetry and Repetition



Lawson, Rebecca, Ajvani, Henna and Cecchetto, Stefano
(2016) Effects of Line Separation and Exploration on the Visual and Haptic Detection of Symmetry and Repetition. EXPERIMENTAL PSYCHOLOGY, 63 (4). pp. 197-214.

This is the latest version of this item.

[img] Text
GapSize-Revised-10Mar2016-LinesNotContours.docx - Unspecified

Download (2MB)
[img] Text
Effects of Line Separation and Exploration on the Visual and Haptic Detection of Symmetry and Repetition.pdf - Published version

Download (2MB) | Preview

Abstract

Detection of regularities (e.g., symmetry, repetition) can be used to investigate object and shape perception. Symmetry and nearby lines may both signal that one object is present, so moving lines apart may disrupt symmetry detection, while repetition may signal that multiple objects are present. Participants discriminated symmetrical/irregular and repeated/irregular pairs of lines. For vision, as predicted, increased line separation disrupted symmetry detection more than repetition detection. For haptics, symmetry and repetition detection were similarly disrupted by increased line separation; also, symmetry was easier to detect than repetition for one-handed exploration and for body midline-aligned stimuli, whereas symmetry was harder to detect than repetition with two-handed exploration of stimuli oriented across the body. These effects of exploration and stimulus orientation show the influence of modality-specific processing rather than properties of the external world on regularity detection. These processes may, in turn, provide insights into the nature of objectness in vision and in touch.

Item Type: Article
Uncontrolled Keywords: regularity, bilateral symmetry, reflection, translation, object
Depositing User: Symplectic Admin
Date Deposited: 02 Aug 2019 15:14
Last Modified: 16 Mar 2024 08:15
DOI: 10.1027/1618-3169/a000329
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3050864

Available Versions of this Item