Perspectival Reversals of a Solid: A Phenomenal Description

Deręgowski, Jan B.

doi:10.1068/p7781

Cited by 8 publications

(5 citation statements)

References 11 publications

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“…To put it in more explicit terms, the space we see in is intrinsically imaginative. The main qualitative "skeletal" characteristics of this space are convexities (the space outside) and concavities (the space inside), and between these two characteristics, there may be an entire phenomenology of spatial variations [46][47][48][49][50].…”

Section: Disscusionmentioning

confidence: 99%

Perception of 3D virtual road markings: Based on estimation of vehicle speed

Trifunović¹,

Čičević²,

Lazarević³

et al. 2019

FME Transactions

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Excessive speed and poor drivers' perception are the causes of a large number of traffic accidents. Analysis of the influence of geometry in drivers' behavior has been widely performed by different researchers. One way to improve road safety is to provide adequate visibility in order to help drivers adopt adequate behaviors. When the budget is not sufficient for expensive traffic solutions, innovative but simple solutions can be implemented. In this study, the experiment was performed to explore how drivers' perception and behavior are influenced by two virtual 3D shapes' projections-a 3D alternative crosswalk pattern and speed bumps consisted of triangular prisms. The results show statistically significant differences between drivers' willingness to reduce vehicle speed as a response to the two types of road markings: the first one with the square shape base (rectangular prism) and the second one with triangular shape base (triangular prism).

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Section: Disscusionmentioning

confidence: 99%

Perception of 3D virtual road markings: Based on estimation of vehicle speed

Trifunović¹,

Čičević²,

Lazarević³

et al. 2019

FME Transactions

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“…A funnel looked into monocularly is seen for what it is: its converging walls receding towards the spout. After a short time, such percept changes spontaneouslyperceptual inversion occurs and the funnel is no longer seen as a funnel, but as a tepee whose outer walls are the inner surface of the funnel and whose smoke outlet at the top is the funnel's spout (Deręgowski 2014). Moreover, if an insect, say a spider, were to walk from the rim of the funnel directly towards the spout, the direction of its journey would also be inverted, so that when walking downwards towards the spout it would appear to be walking upwards, butand here is the rubit would appears to grow smaller as it got closer to the observer.…”

Section: Introductionmentioning

confidence: 99%

Are all distances created equal? Insights from developmental psychology

2020

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Gilead et al.'s theory presupposes that traversing temporal, spatial, social, and hypothetical distances are largely interchangeable acts of mental travel that co-occur in human ontogeny. Yet, this claim is at odds with recent developmental data suggesting that children's reasoning is differentially affected by the dimension which they must traverse, and that different representational abilities underlie travel across different dimensions.

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“…The inner wall of a pyramidal chute provides similar converging lines as the twodimensional Ponzo illusion. However, when viewed monocularly from above, the chute can be perceived either veridically, as a hollow concave chute narrowing in width as its depth from the observer increases, or inverted (that is reversed 1 in depth) as a solid convex pyramidal form rising toward the observer (Dere gowski, 2014). When the viewer's percept is of the veridical chute, the typical Ponzo illusion is observed for objects placed on the inner wall of the chute, with an object positioned closer to the floor of the chute appearing larger than when it is placed nearer to the opening of the chute.…”

Section: Introductionmentioning

confidence: 99%

In the Eye of the Illusion: Variation in Perceptual Phenomena Within an Inverted Percept

Deręgowski

Tatler

2016

Perception

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Monocular depth cues can lead not only to illusory depth in two-dimensional patterns but also to perspective reversals in three-dimensional objects. When a viewer perceptually inverts (reverses) a three-dimensional object, stimuli on the inner surfaces of that object also invert. However, the perceptual fate of anything occurring within the space that is enclosed by the walls of a perceptually reversible object is unknown. In the present study, perceptions of the relative vertical heights of stimuli within a truncated pyramidal chute were compared for stimuli placed laterally, on the inner surface of the chute, or centrally, suspended within the volume enclosed by the chute. The typical inversion was obtained for lateral stimuli, but central stimuli did not invert. While central stimuli maintained their veridical vertical order, participants experienced a considerable compression of perceptual depth. These results imply a dilution of the illusion within the centre of the volume of space that it encloses.

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Perspectival Reversals of a Solid: A Phenomenal Description

Cited by 8 publications

References 11 publications

Perception of 3D virtual road markings: Based on estimation of vehicle speed

Perception of 3D virtual road markings: Based on estimation of vehicle speed

Are all distances created equal? Insights from developmental psychology

In the Eye of the Illusion: Variation in Perceptual Phenomena Within an Inverted Percept

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