Illusory Contours in Line Patterns with Apparent Depth Due to Either Perspective or Overlay

Day, R. H.; Kasperczyk, R. T.

doi:10.1068/p120485

Cited by 10 publications

(4 citation statements)

References 8 publications

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“…The mechanisms by which this fillingin process occurs, particularly with regard to meaningful auditory speech or written messages, remains in question; however, it has been suggested that it is an involuntary process recruiting both perceptual and cognitive processes (Komatsu, 2006;Pessoa & De Weerd, 2003;ShinnCunningham & Best, 2008;Snodgrass & Kinjo, 1998). The filling in of auditory information interrupted by noise is similar to the visual system of filling in partially occluded objects and is considered conceptually the same (Day & Kasperczyk, 1983;Kanizsa, 1979;Petkov & Sutter, 2011;Warren, Obusek, & Ackroff, 1972). Both modalities involve the recruitment of perceptual and cognitive-linguistic factors, which play a role in the restoration of partial sensory information.…”

Section: Mechanism Of Filling In Partial Spoken and Written Informationmentioning

confidence: 99%

Integration of Partial Information Within and Across Modalities: Contributions to Spoken and Written Sentence Recognition

Smith

Fogerty

2015

J Speech Lang Hear Res

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Purpose: This study evaluated the extent to which partial spoken or written information facilitates sentence recognition under degraded unimodal and multimodal conditions. Method: Twenty young adults with typical hearing completed sentence recognition tasks in unimodal and multimodal conditions across 3 proportions of preservation. In the unimodal condition, performance was examined when only interrupted text or interrupted speech stimuli were available. In the multimodal condition, performance was examined when both interrupted text and interrupted speech stimuli were concurrently presented. Sentence recognition scores were obtained from simultaneous and delayed response conditions. Results: Significantly better performance was obtained for unimodal speech-only compared with text-only conditions across all proportions preserved. The multimodal condition revealed better performance when responses were delayed. During simultaneous responses, participants received equal benefit from speech information when the text was moderately and significantly degraded. The benefit from text in degraded auditory environments occurred only when speech was highly degraded. Conclusions: The speech signal, compared with text, is robust against degradation likely due to its continuous, versus discrete, features. Allowing time for offline linguistic processing is beneficial for the recognition of partial sensory information in unimodal and multimodal conditions. Despite the perceptual differences between the 2 modalities, the results highlight the utility of multimodal speech + text signals.

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Section: Mechanism Of Filling In Partial Spoken and Written Informationmentioning

confidence: 99%

Integration of Partial Information Within and Across Modalities: Contributions to Spoken and Written Sentence Recognition

Smith

Fogerty

2015

J Speech Lang Hear Res

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“…The properties of illusory contours have been measured in a variety of different ways. In experiment 2, we investigated a second measure of the clarity of the longrange illusory contour by having participants rate the clarity of the contour on a numerical scale (Day and Kasperczyk 1983;Jory and Day 1979). As a verification of experiment 1, it is expected that changes in phase angle will change the clarity ratings of the long-range illusory contour.…”

Section: Methodsmentioning

confidence: 99%

Properties of Long-Range Illusory Contours Produced by Offset-Arcs

Francis

Wede

2010

Perception

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Researchers have used several different types of illusory contours to investigate properties of human perception. One rarely used illusory contour is a combination of the abutting grating and Kanizsa illusions. We call this the offset-arcs illusion and provide an empirical investigation of the illusion. Through a series of four experiments, using different methods of measurement, we show that changes to the phase of the abutting-grating part of the inducing stimulus can dramatically change the perceived strength and clarity of the long-range illusory contour. The easy manipulation of illusion strength should make the offset-arcs illusion applicable to a wide range of studies that utilize long-range illusory contours. The lack of a brightness component to the illusion should allow the offset-arcs illusion to help separate perceptual grouping from surface brightness effects that are often confounded in other illusory contours.

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“…An alternative view is that higher order cognitive processes are the major factors in illusory contour formation. These are usually variants of depth stratification or an attention-based problem-solving strategy (Bradley & Petry, 1977; Coren, 1972; Day & Kasperczyk, 1983; Parks, 1984; Pritchard & Warm, 1983; Rock & Anson, 1979). Gregory and Harris (1974), Harris and Gregory (1973), Lawson, Cowan, Gibbs, and Whitmore (1974), Prazdny (1985), Smith (1983), and Whitmore, Lawson, and Kozora (1976) have demonstrated interference or facilitation of illusory contours with stereoscopic cues.…”

mentioning

confidence: 99%

Effects of flicker-induced depth on chromatic subjective contours.

Meyer¹,

Dougherty²

1987

Journal of Experimental Psychology: Human Perception and Perfor

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Two experiments examined the dependence of illusory colors on boundary salience and depth stratification by using flicker-induced depth. The first used a subjective-contour stimulus that appeared as a translucent colored rectangle covering a set of inducing circles and a dark background. The circles were then flickered so as to be perceived as background, and the previously dark background moved forward and appeared as foreground. Simultaneously, the chromatic subjective contour was eliminated. In the second experiment, a subjective-contour (faces/vase-concentric squares) figure was tinted with the McCollough effect, which produced a strong subjective color edge. This edge was visible only with the faces/vase percept and not in the squares percept. Flickering the target locked it into the square configuration because in this case the flicker held the entire pattern in the same depth plane. This eliminated the subjective color edge. Depth stratification and subjective color blockage were maximal at a flicker rate of 6 Hz.

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Illusory Contours in Line Patterns with Apparent Depth Due to Either Perspective or Overlay

Cited by 10 publications

References 8 publications

Integration of Partial Information Within and Across Modalities: Contributions to Spoken and Written Sentence Recognition

Integration of Partial Information Within and Across Modalities: Contributions to Spoken and Written Sentence Recognition

Properties of Long-Range Illusory Contours Produced by Offset-Arcs

Effects of flicker-induced depth on chromatic subjective contours.

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