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Perceptual and Motor Skills Dec 1962
Topics: Humans; Size Perception
PubMed: 14023601
DOI: 10.2466/pms.1962.15.3.591 -
Experimental Brain Research Jun 2014Weight illusions--where one object feels heavier than an identically weighted counterpart--have been the focus of many recent scientific investigations. The most famous... (Review)
Review
Weight illusions--where one object feels heavier than an identically weighted counterpart--have been the focus of many recent scientific investigations. The most famous of these illusions is the 'size-weight illusion', where a small object feels heavier than an identically weighted, but otherwise similar-looking, larger object. There are, however, a variety of similar illusions which can be induced by varying other stimulus properties, such as surface material, temperature, colour, and even shape. Despite well over 100 years of research, there is little consensus about the mechanisms underpinning these illusions. In this review, I will first provide an overview of the weight illusions that have been described. I will then outline the dominant theories that have emerged over the past decade for why we consistently misperceive the weights of objects which vary in size, with a particular focus on the role of lifters' expectations of heaviness. Finally, I will discuss the magnitude of the various weight illusions and suggest how this largely overlooked facet of the topic might resolve some of the debates surrounding the cause of these misperceptions of heaviness.
Topics: Hand Strength; Humans; Illusions; Probability; Size Perception; Weight Perception
PubMed: 24691760
DOI: 10.1007/s00221-014-3926-9 -
Perception 1982The hypothesis that visual size is determined from the low-frequency Fourier spectrum of the image has been tested in a variety of ways. The fact that size...
The hypothesis that visual size is determined from the low-frequency Fourier spectrum of the image has been tested in a variety of ways. The fact that size discrimination of vertical bars is unimpaired when high spatial frequencies are filtered out of the image by blurring, and the fact that spatial-frequency adaptation alters perceived size, argue in favor of such hypothesis. However, the hypothesis is weakened by the observation that discrimination is also unimpaired by filtering low frequencies out of the image and by the observation that some manipulations which alter the Fourier transform produce no corresponding perceptual change. No current theory of size perception appears to fit all of these data.
Topics: Discrimination, Psychological; Fourier Analysis; Humans; Learning; Models, Psychological; Optical Illusions; Psychophysics; Size Perception
PubMed: 7186622
DOI: 10.1068/p110707 -
Perception 1982
Topics: Accommodation, Ocular; Humans; Neurons; Size Perception
PubMed: 7110882
DOI: 10.1068/p100707 -
Perception Jul 2018In spite of accumulating evidence for the spatial rule governing cross-modal interaction according to the spatial consistency of stimuli, it is still unclear whether 3D...
In spite of accumulating evidence for the spatial rule governing cross-modal interaction according to the spatial consistency of stimuli, it is still unclear whether 3D spatial consistency (i.e., front/rear of the body) of stimuli also regulates audiovisual interaction. We investigated how sounds with increasing/decreasing intensity (looming/receding sound) presented from the front and rear space of the body impact the size perception of a dynamic visual object. Participants performed a size-matching task (Experiments 1 and 2) and a size adjustment task (Experiment 3) of visual stimuli with increasing/decreasing diameter, while being exposed to a front- or rear-presented sound with increasing/decreasing intensity. Throughout these experiments, we demonstrated that only the front-presented looming sound caused overestimation of the spatially consistent looming visual stimulus in size, but not of the spatially inconsistent and the receding visual stimulus. The receding sound had no significant effect on vision. Our results revealed that looming sound alters dynamic visual size perception depending on the consistency in the approaching quality and the front-rear spatial location of audiovisual stimuli, suggesting that the human brain differently processes audiovisual inputs based on their 3D spatial consistency. This selective interaction between looming signals should contribute to faster detection of approaching threats. Our findings extend the spatial rule governing audiovisual interaction into 3D space.
Topics: Adult; Auditory Perception; Female; Humans; Male; Size Perception; Visual Perception; Young Adult
PubMed: 29783921
DOI: 10.1177/0301006618777708 -
Vision Research Jun 2016Both the upper and lower disparity limits for stereopsis vary with the size of the targets. Recently, Tsirlin, Wilcox, and Allison (2012) suggested that perceived depth...
Both the upper and lower disparity limits for stereopsis vary with the size of the targets. Recently, Tsirlin, Wilcox, and Allison (2012) suggested that perceived depth magnitude from stereopsis might also depend on the vertical extent of a stimulus. To test this hypothesis we compared apparent depth in small discs to depth in long bars with equivalent width and disparity. We used three estimation techniques: a virtual ruler, a touch-sensor (for haptic estimates) and a disparity probe. We found that depth estimates were significantly larger for the bar stimuli than for the disc stimuli for all methods of estimation and different configurations. In a second experiment, we measured perceived depth as a function of the height of the bar and the radius of the disc. Perceived depth increased with increasing bar height and disc radius suggesting that disparity is integrated along the vertical edges. We discuss size-disparity correlation and inter-neural excitatory connections as potential mechanisms that could account for these results.
Topics: Adult; Analysis of Variance; Depth Perception; Humans; Photic Stimulation; Sensory Thresholds; Size Perception; Vision, Binocular
PubMed: 27180656
DOI: 10.1016/j.visres.2016.04.006 -
The American Journal of Psychology Sep 1960
Topics: Cues; Humans; Size Perception; Space Perception
PubMed: 13782816
DOI: No ID Found -
Journal of Motor Behavior 2019Information associated with the inertia tensor is the preeminent explanation for haptic perception of object properties, notably wielded rod length. Critics counter that... (Review)
Review
Information associated with the inertia tensor is the preeminent explanation for haptic perception of object properties, notably wielded rod length. Critics counter that tensorial-based information requires non-tensorial supplementation (mass, torque). However, those critiques omit important constraints. With relevant constraints included, the inertia tensor alone completely specifies rod length. I list constraints inherent (but tacit) in haptic rod length perception, and show that object properties associated with the inertia tensor are invariant, even with constraints removed, by involving (a) longitudinal moment equivalents for rod mass and (b) derivatives of moments with respect to varying rotation axes. Analytic outcomes show tensorial-based information is a robust basis for wielded rod length perception, and suggest open questions for empirical exploration.
Topics: Humans; Size Perception; Torque; Touch; Touch Perception; Weight Perception
PubMed: 30714509
DOI: 10.1080/00222895.2019.1565527 -
Vision Research Dec 2018Previous research has shown that the allocation of spatial attention at a small region of space increases the apparent size of the adjacent spatial area. In four...
Previous research has shown that the allocation of spatial attention at a small region of space increases the apparent size of the adjacent spatial area. In four experiments reported here, we systematically induced either small or large foci of attention and examined how this affects the perceived object's size. We observed that an increase in the size of the attentional focus consistently decreased the apparent object's size. This outcome provides new insights into how attention alters appearance.
Topics: Adult; Attention; Female; Humans; Male; Reaction Time; Size Perception
PubMed: 30393046
DOI: 10.1016/j.visres.2018.10.004 -
Acta Psychologica Jun 2014We studied the size-weight illusion through comparative judgments. The experiment had two direct aims: to verify whether the relative contribution of size to apparent...
We studied the size-weight illusion through comparative judgments. The experiment had two direct aims: to verify whether the relative contribution of size to apparent heaviness can differ for different stimulus sets, and to verify whether that contribution can differ for different methods of comparing two objects (consecutive vs. simultaneous weighing). Thirty university students participated. Results show that the relative contribution of size depends on stimulus set, but is independent of the method used for comparing objects. The first finding implies that a linear model cannot describe the integration of size and weight information in the illusion; the second finding is evidence for the low-level character of the integration process.
Topics: Adult; Female; Humans; Illusions; Judgment; Male; Models, Theoretical; Size Perception; Weight Perception; Young Adult
PubMed: 24686240
DOI: 10.1016/j.actpsy.2014.03.001