Perceived relative distance on the ground affected by the selection of depth information

Wu, Jun; He, Zijiang J.; Ooi, Teng Leng

doi:10.3758/pp.70.4.707

Cited by 28 publications

(56 citation statements)

References 43 publications

(26 reference statements)

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“…Participants who distributed their views of the room equally across available viewpoints remembered the objects in each half of the room as being too close to the corresponding side of the room. Mindful of previous research that has shown exocentric distances to be underestimated along the depth dimension (Loomis, DaSilva, Fujita, & Fukusima, 1992;Wu, He, & Ooi, 2008), we suggest that the present results reflect underestimation of the distance between the objects and the sides of the room. We suggest that participants used an accumulator-like process to integrate the inconsistent location information that they acquired consequent to their underestimation of distances from opposing viewpoints (Heathcote & Love, 2012).…”

mentioning

confidence: 79%

“…Previous research has shown that exocentric distances are underestimated along the depth dimension (Loomis et al, 1992;Wu et al, 2008). In the current study, the manifestation of participants' underestimation of distance apparently depended on the participants' distribution of viewpoints.…”

Section: Discussionmentioning

confidence: 99%

“…Previous research has found that exocentric distance is incorrectly estimated along depth intervals (Gogel, 1965;Loomis, Da Silva, Fujita, & Fukusima, 1992;Wu, He, & Ooi, 2008). Because participants learn the room from its sides, we assume that distances from the sides to objects in the room will be incorrectly estimated.…”

Section: Intoductionmentioning

confidence: 99%

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Recall of scenes encoded from opposing viewpoints.

Varner

Dopkins

Kim

et al. 2014

Psychology & Neuroscience

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The present research examined the effect, on recall of a scene, of the distribution of viewpoints during the encoding of the scene. Participants completed a visual search task in a 3-D model of a room during which they were given the opportunity to view the room from viewpoints at opposing sides of the room. Subsequently, participants were tasked to recall the locations of the objects in the room. Participants who distributed their views of the room unequally across available viewpoints remembered the objects in the room as being too close to their preferred side of the room. Participants who distributed their views of the room equally across available viewpoints remembered the objects in each half of the room as being too close to the corresponding side of the room. Mindful of previous research that has shown exocentric distances to be underestimated along the depth dimension (Loomis, DaSilva, Fujita, & Fukusima, 1992;Wu, He, & Ooi, 2008), we suggest that the present results reflect underestimation of the distance between the objects and the sides of the room. We suggest that participants used an accumulator-like process to integrate the inconsistent location information that they acquired consequent to their underestimation of distances from opposing viewpoints (Heathcote & Love, 2012).

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mentioning

confidence: 79%

Section: Discussionmentioning

confidence: 99%

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Recall of scenes encoded from opposing viewpoints.

Varner

Dopkins

Kim

et al. 2014

Psychology & Neuroscience

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show abstract

“…Wu, He, & Ooi, 2013). In 2004, Ooi and He reported evidence of a sequential surface integration process in which a perceptual representation of the ground is sequentially built up by fixating or attending to different parts of the visible ground surface (He, J. Wu, Ooi, Yarbrough et al, 2004;J. Wu, He, & Ooi, 2008).…”

Section: Theory Ofmentioning

confidence: 99%

Three theories for reconciling the linearity of egocentric distance perception with distortion of shape on the ground plane.

Loomis¹

2014

Psychology & Neuroscience

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The focus here is on the paradoxical finding that whereas visually perceived egocentric distance is proportional to physical distance out to at least 20 m under full-cue viewing, there are large distortions of shape within the same range, reflecting a large anisotropy of depth and frontal extents on the ground plane. Three theories of visual space perception are presented, theories that are relevant to understanding this paradoxical result. The theory by Foley, Ribeiro-Filho, and Da Silva is based on the idea that when the visual system computes the length of a visible extent, the effective visual angle is a non-linear increasing function of the actual visual angle. The theory of Durgin and Li is based on the idea that two angular measures, optical slant and angular declination, are over-perceived. The theory of Ooi and He is based on both a default perceptual representation of the ground surface in the absence of visual cues and the "sequential surface integration process" whereby an internal representation of the visible ground surface is constructed starting from beneath the observer's feet and extending outward.

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“…Thus they also used the measurement of stereoscopic depth perception that is not closely related with long distances judgments [2][3][4][5]. The effectiveness of egocentric distance estimation improves due to the binocular disparity using the angle of convergence of the two eyes over distances of two to six meters [6,7]. Constant feedbacks of small displacements of the retina image are using to continually, adjust the distance between things when we move in space.…”

Section: Introductionmentioning

confidence: 99%

Object distance scaling in real space is preserved in low vision subjects

Cecchele¹,

Lopes²,

Nakanami³

et al. 2014

J Integr Psychol Ther

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Purpose: We investigate the ability of adults with and without visual impairment estimate distances between stimuli in real environment. Methods: W=e evaluated 12 subjects aged between 20 and 40 years in which 6 subjects with normal vision (mean age=31.0, SD=6.5), and 6 subjects with visual impairment (mean age=27.7, SD=7.8). Two styrofoam balls of 10cm in diameter were used, painted in black and a line of white velcro of 3.5 meters was fixed in the floor of a hallway without lateral references. Psychophysical scaling was evaluated by magnitude estimation and the exponent of the Stevens' law was calculated. Results: The calculated exponent for the controls was 1.13 for near judgment and 1.11 for far distances. The low vision group showed exponent values of 1.01 for near and 0.96 for far distances judgment. There was a statistical difference for 120cm of distance between balls for near (F 10 =88.21, p<0.001) and a tendency to difference for 200cm (F 10 =3.81, p=0.079) between groups. Conclusions: Our scaling procedure shows that despite the reduction in the distance judged by the low vision subjects, their internal representation of space is preserved. Similar exponent values indicates that their suprathreshold impression of the distance follow the same rules of the normal subject.

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Perceived relative distance on the ground affected by the selection of depth information

Cited by 28 publications

References 43 publications

Recall of scenes encoded from opposing viewpoints.

Recall of scenes encoded from opposing viewpoints.

Three theories for reconciling the linearity of egocentric distance perception with distortion of shape on the ground plane.

Object distance scaling in real space is preserved in low vision subjects

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