Intramodal and cross-modal discrimination of curvature: Haptic touch versus vision

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Intramodal and cross-modal discrimination of curvature: Haptic touch versus vision.

A total of 60 subjects, 20 in each experimental condition, gave 'same-different' judgments to pairs of stimuli differing in radius of curvature. Stimuli were presented intramodally to vision, intramodally to haptic touch, and cross-modally to vision and haptic touch. Results showed that performance, quantified by the measure d', differed among the three modality conditions, being best in vision...

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Cross-modal illusory conjunctions (ICs) happen when, under conditions of divided attention, felt textures are reported as being seen or vice versa. Experiments provided evidence for these errors, demonstrated that ICs are more frequent if tactile and visual stimuli are in the same hemispace, and showed that ICs still occur under forced-choice conditions but do not occur when attention to the fe...

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We investigated whether haptic comparison of the curvature of strips is influenced by the tilt (the average slope relative to the horizontal) of the curved strips. This particular stimulus manipulation was chosen to decide between two broad ways in which dynamic curvature comparison might be done: on the basis of the attitude (slope) differences over the surfaces or on the basis of the attitude...

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Curvature sensing by vision and touch

Brain representations of curvature may be formed on the basis of either vision or touch. Experimental and theoretical work by the author and her colleagues has shown that the processing underlying such representations directly depends on specific two-dimensional geometric properties of the curved object, and on the symmetry of curvature. Virtual representations of curves with mirror symmetry we...

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ژورنال

عنوان ژورنال: Current psychology letters

سال: 2008

ISSN: 1376-2095,1379-6100

DOI: 10.4000/cpl.3333