Practise strengthens haptic capture.

Abstract

When do haptic estimates of discordant visual-haptic size capture vision? Observers looked at a square through a minifying lens (50%) whilst they simultaneously touched the square from below through a hand-concealing cloth. Their subsequent match of the square's size, rendered by touching a set of comparison squares, was haptically biased when they practised estimating the square's size (Experiment 1, N = 72), when they actively explored rather than passively touched the square (Experiment 2, N = 24), but not when they were uninformed before inspecting the square that they would estimate its size (Experiment 3, N = 36). Evidently, the haptic exploratory strategies occasioned by the practise influenced the integration of the felt size and the seen size by weighing the haptic input more than the visual input, and this weight shifting manifested itself by strengthening haptic capture.

A “Unity Assumption” Does Not Promote Intersensory Integration

“…A description of the apparatus was presented elsewhere (Misceo & Plankinton, 2009). Briefly, observers could inspect a standard stimulus placed in a box by looking through a 52-mm diameter tube on top of the box.…”

“…Rock and Victor’s (1964) procedure has shown that when adult observers simultaneously touch an object and view its minified size, the object is not perceived to be two different sizes, one specified by its haptic size and the other by its visual size. Observers instead perceive one object, whose size can be a compromise between the two discordant inputs (Gepshtein & Banks, 2003; Hershberger & Misceo, 1996; Misceo & Plankinton, 2009). Recently, Helbig and Ernst (2007) examined whether intersensory integration would be impaired if the sensory information were also made spatially discrepant.…”

The influence of a modified ball on transfer of passing skill in soccer

“…It is possible that individuals' perceptual attunement to the FB, as a source of information, follow an inverted-U-shape along the expertise continuum. Typically, novices mainly rely on visual information to guide action but as they progress through the expertise continuum they increasingly learn to use haptic information (e.g., foot-ball contact) (Misceo & Plankinton, 2009). In this context, FB might promote the use of haptic information over visual information on ball only in experts, who are able to exploit FB properties (e.g., regular ball bounce and trajectory), being at the skill level (Handford, Davids, Bennett, & Button, 1997).…”

Again, Knowledge of Common Source Fails to Promote Visual-Haptic Integration

“…When the observers used visual comparisons, their estimates were visually weighted, and when they used haptic comparisons, their estimates were haptically weighted. Others also have found similar eff ects, ranging in size from moderate to large ( Hershberger & Misceo, 1996 ;Heller, et al ., 1999 ;Helbig & Ernst, 2007 ;Misceo & Plankinton, 2009 ;Misceo & Taylor, 2011 ). However, if the separate signals were equally coupled, one would have observed the estimates to be independent of the response type.…”

“…All materials were similar to those used in previous studies ( Misceo & Plankinton, 2009 ;Misceo & Taylor, 2011 ). Generally, observers inspected the size of a black plastic cube (60 × 60 × 10 mm).…”