Perceiving geographical slant
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It is proposed that the perceived exaggeration of geographical slant preserves the relationship between distal inclination and people’s behavioral potential, thereby enhancing sensitivity to the small inclines that must actually be traversed in everyday experience.Abstract:
People judged the inclination of hills viewed either out-of-doors or in a computer-simulated virtual environment Angle judgments were obtained by having people (1) provide verbal estimates, (2) adjust a representation of the hill’s cross-section, and (3) adjust a tilt board with their unseen hand Geographical slant was greatly overestimated according to the first two measures, but not the third Apparent slant judgments conformed to ratio scales, thereby enhancing sensitivity to the small inclines that must actually be traversed in everyday experience It is proposed that the perceived exaggeration of geographical slant preserves the relationship between distal inclination and people’s behavioral potential Hills are harder to traverse as people become tired; hence, apparent slant increased with fatigue Visually guided actions must be accommodated to the actual distal properties of the environment; consequently, the tilt board adjustments did not reflect apparent slant overestimations, nor were they influenced by fatigue Consistent with the fact that steep hills are more difficult to descend than to ascend, these hills appeared steeper when viewed from the topread more
Citations
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Journal ArticleDOI
Perceived Slant: A Dissociation between Perception and Action
TL;DR: The results are consistent with the hypothesis that two perceptual processes underlie the dissociation between explicit awareness and visuomotor assessments of perceived slant.
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Does my step look big in this? A visual illusion leads to safer stepping behaviour.
TL;DR: The strong link found between perception of a visual illusion and visuomotor action provides additional support to the view that the original, controversial proposal by Goodale and Milner (1992) of two separate and distinct visual streams for perception and vising should be re-evaluated.
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The Perceptual Experience of Slope by Foot and by Finger
TL;DR: It is reported that the haptic perception of slope by means of the foot is greatly exaggerated and this misperception is present in verbal as well as proprioceptive judgments.
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The impact of visual exploration of judgments of whether a gap is crossable.
TL;DR: The data indicate that the exploratory movements of prospective actors are essential for the pickup of information about their action capabilities in order to detect information about gap width.
References
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Book
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TL;DR: The relationship between Stimulation and Stimulus Information for visual perception is discussed in detail in this article, where the authors also present experimental evidence for direct perception of motion in the world and movement of the self.
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TL;DR: It is proposed that the ventral stream of projections from the striate cortex to the inferotemporal cortex plays the major role in the perceptual identification of objects, while the dorsal stream projecting from the stripping to the posterior parietal region mediates the required sensorimotor transformations for visually guided actions directed at such objects.
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Value and need as organizing factors in perception
TL;DR: Throughout the history of modern psychology, perception has been treated as though the perceiver were a passive recording instrument of rather complex design, much as did the old nerve-muscle psychophysiology fall short of explaining behavior in everyday life.