Abstract:
:Bodily illusions differently affect body representations underlying perception and action. We investigated whether this task dependence reflects two distinct dimensions of embodiment: the sense of agency and the sense of the body as a coherent whole. In experiment 1 the sense of agency was manipulated by comparing active versus passive movements during the induction phase in a video rubber hand illusion (vRHI) setup. After induction, proprioceptive biases were measured both by perceptual judgments of hand position, as well as by measuring end-point accuracy of subjects' active pointing movements to an external object with the affected hand. The results showed, first, that the vRHI is largely perceptual: passive perceptual localisation judgments were altered, but end-point accuracy of active pointing responses with the affected hand to an external object was unaffected. Second, within the perceptual judgments, there was a novel congruence effect, such that perceptual biases were larger following passive induction of vRHI than following active induction. There was a trend for the converse effect for pointing responses, with larger pointing bias following active induction. In experiment 2, we used the traditional RHI to investigate the coherence of body representation by synchronous stimulation of either matching or mismatching fingers on the rubber hand and the participant's own hand. Stimulation of matching fingers induced a local proprioceptive bias for only the stimulated finger, but did not affect the perceived shape of the hand as a whole. In contrast, stimulation of spatially mismatching fingers eliminated the RHI entirely. The present results show that (i) the sense of agency during illusion induction has specific effects, depending on whether we represent our body for perception or to guide action, and (ii) representations of specific body parts can be altered without affecting perception of the spatial configuration of the body as a whole.
journal_name
Perceptionjournal_title
Perceptionauthors
Kammers MP,Longo MR,Tsakiris M,Dijkerman HC,Haggard Pdoi
10.1068/p6389subject
Has Abstractpub_date
2009-01-01 00:00:00pages
1804-20issue
12eissn
0301-0066issn
1468-4233journal_volume
38pub_type
杂志文章相关文献
PERCEPTION文献大全abstract::The background which led Stiles to the discovery that the color of a monochromatic ray of light varied with its angle of incidence on the retina, and the developments in the subject since 1937 when this discovery was reported are summarized. Stiles's original measurements of the 'hue shift' did not successfully quanti...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p150785
更新日期:1986-01-01 00:00:00
abstract::The impact that the analysis of sound waves has made on theories of light is well known, and is touched upon here. However, the acoustic figures described initially by Robert Hooke in 1665 and in more detail by Ernst Chladni in 1787 (often referred to as Chladni figures) were instrumental in vision in two specific res...
journal_title:Perception
pub_type: 历史文章,杂志文章
doi:10.1068/p5295
更新日期:2005-01-01 00:00:00
abstract::Op-art-based stimuli have been shown to be uncomfortable, possibly due to a combination of fixational eye movements (microsaccades) and excessive cortical responses. Efforts have been made to measure illusory phenomena arising from these stimuli in the absence of microsaccades, but there has been no attempt thus far t...
journal_title:Perception
pub_type: 杂志文章
doi:10.1177/0301006616683202
更新日期:2017-06-01 00:00:00
abstract::Previous studies have suggested that physiological responses are greatest and face recognition performance is best when a band of middle relative spatial frequencies (SFs) is included in stimuli. Conversely, behavioural data suggest that object recognition performance shows comparatively little effect of SF variations...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p7056
更新日期:2012-01-01 00:00:00
abstract::Two shapes of either the same or different color will seem to be in smooth apparent motion with like-colored mates, at proper conditions of flash timing and spacing. An experiment is reported in which the condition was tested for unlike-colored pairs, for example red-green alternated with green-red. The question of in...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p130249
更新日期:1984-01-01 00:00:00
abstract::The method of constant stimuli was used to examine the accuracy with which two-dimensional spatial information can be represented in mental images. In experiment 1, subjects had to decide which of two successively presented two-dot separations was wider. Over the range of interstimulus intervals employed (0 to 30s), t...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p250053
更新日期:1996-01-01 00:00:00
abstract::Quinn and Watt (2006 Perception 35 267-280) showed that the optimal tempi for pieces of music (ie the appropriate speed for a melody) vary from melody to melody. The current study tested if such tempi responses depend on previous stimulus presentations. To do this, we ran a many-participants single-presentation versio...
journal_title:Perception
pub_type: 评论,杂志文章
doi:10.1068/p7127
更新日期:2012-01-01 00:00:00
abstract::Humans understand mechanical events to involve physical bodies interacting by contact, but intentional events involve agents that can also interact at a distance. We investigated infant sensitivity to causality in a simple event in which one agent appears to react to another without contact. Infants 9 months old were ...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p281105
更新日期:1999-01-01 00:00:00
abstract::This paper is about kinds of visual ambiguity that concern the author as a painter. Some effects of incompatible depth cues on the experience of looking at paintings and drawings are discussed. Particular attention is given to the role of colour as a depth cue. It is suggested that areas of identical pigmentation on d...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p080157
更新日期:1979-01-01 00:00:00
abstract::Stereoscopic processing of horizontal and vertical disparities was assessed by measuring how the stereoscopic appearance of test dots near the fixation point was influenced by inducing stimuli in the near periphery. The inducing stimuli were differentially magnified in the two eyes and varied in horizontal eccentricit...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p260693
更新日期:1997-01-01 00:00:00
abstract::Adapting to a drifting grating (temporal frequency 4 Hz, contrast 0.4) in the periphery gave rise to a motion aftereffect (MAE) when the grating was stopped. A standard unadapted foveal grating was matched to the apparent velocity of the MAE, and the matching velocity was approximately constant regardless of the visua...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p150603
更新日期:1986-01-01 00:00:00
abstract::One of the most common obstacles to object perception is the fact that objects often occlude parts of themselves and parts of other objects. Perceptual completion has been studied extensively in humans, and researchers have shown that humans do complete partly occluded objects. In an effort to understand more about th...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p251109
更新日期:1996-01-01 00:00:00
abstract::Eye fixation patterns were explored for sixty adult subjects, each of whom viewed one of three stimuli, either in a three-dimensional model format or in a two-dimensional photographic format. The stimuli consisted of one symmetrical and two asymmetrical color representational drawings displayed in the form of a photog...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p200449
更新日期:1991-01-01 00:00:00
abstract::Not only translations and rotations, but also intriguing 'plastic deformations' are observed in apparent motion. What kinds of invariants does the visual system depend on during these transformations to determine that two figures of different shapes nevertheless represent the same object? Experiments are reported in w...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p140197
更新日期:1985-01-01 00:00:00
abstract::To investigate the mental mechanism that estimates the duration of sounds, the subjective duration of a tone was measured. In the first experiment a portion of the target sound was replaced with another sound. In the second and third experiments another sound either started or ended in the middle of the target sound. ...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p2968
更新日期:2000-01-01 00:00:00
abstract::Can visual similarity between shapes facilitate orientation priming? Five experiments are reported in which this possibility was explored by using novel two-dimensional shapes that formed homogeneous stimulus classes. After training on individual shapes in a canonical view, the recognition of these shapes was tested i...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p260051
更新日期:1997-01-01 00:00:00
abstract::Colour aftereffects were observed in dichoptically viewed achromatic striped patterns after a 25 s period of monocular adaptation to an homogeneous coloured field of red, green, or blue. Three test conditions of dichoptic viewing were used. In condition 1, black line patterns were viewed dichoptically on fused white b...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p230957
更新日期:1994-01-01 00:00:00
abstract::Perception of control is known to affect performance under stress. Two experiments are reported the object of which was to find out how loud noise during a contingency assessment task influences perceived control. Subjects were required to choose one of two responses, note one of two results, and then provide an overa...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p130709
更新日期:1984-01-01 00:00:00
abstract::For long periods observers fixated low spatial frequency coloured gratings. Black and white test gratings of the same spatial frequency and orientation as the adapting gratings appeared coloured with the hue complementary to the adapting patterns when the dark test stripes fell on retinal areas previously occupied by ...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p070407
更新日期:1978-01-01 00:00:00
abstract::The perceived lightness of grey bars within grey-white and grey-black square-wave test gratings was measured in the presence of different surrounding regions (plain black, plain white, or black-white square-wave gratings). The results for the grey-white test gratings are explained in terms of three separate processes:...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p100215
更新日期:1981-01-01 00:00:00
abstract::When a large optic-flow pattern is viewed, induced self-motion perception (vection) can result even for observers who are stationary relative to Earth. Vection is common in optokinetic drums, large-screen cinemas, vehicle simulators, and other virtual environments. However, not all optic-flow patterns are equally effe...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p6315
更新日期:2010-01-01 00:00:00
abstract::We investigated here how partly occluded stimuli affect early and late prehension kinematics. Stimuli were pictures of partly occluded cylindrical objects with indentations or protrusions at regular intervals along the contour. They diverged into two plausible completions: a local completion, comprising a linear conti...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p6158
更新日期:2009-01-01 00:00:00
abstract::Outline pictures depict surface edges, and via extensions from this base they can represent sensory and psychological referents. Outline drawings standing for edges of surfaces are relatively ancient, and lines for actions, sounds, and psychological states quite recent--mostly little more than a century. The novel fin...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p6407
更新日期:2009-01-01 00:00:00
abstract::This is the first study to test the extent to which reflections help locate objects in space and perceive their size. For planar mirrors, the relative size of a target and its reflection is informative about the absolute distance of the target in units of the distance between target and mirror surface. When the target...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p5605
更新日期:2007-01-01 00:00:00
abstract::Anchoring theory (Gilchrist et al, 1999 Psychological Review 106 795-834) predicts a wide range of lightness errors, including failures of constancy in multi-illumination scenes and a long list of well-known lightness illusions seen under homogeneous illumination. Lightness values are computed both locally and globall...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p5446
更新日期:2006-01-01 00:00:00
abstract::Can people with different forms of low vision use motion parallax to improve depth judgments? We used a staircase method to compare depth thresholds using motion parallax and static viewing. We tested eighteen normal-vision subjects with a range of simulated deficits in acuity, contrast sensitivity, and simulated peri...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p261529
更新日期:1997-01-01 00:00:00
abstract::Earlier studies have shown the size of kinaesthetically presented two-dimensional movement patterns to be significantly overestimated. Whether this size overestimation is characteristic of the kinaesthetic system alone has not been established. Two experiments are reported which were designed to investigate size judgm...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p140285
更新日期:1985-01-01 00:00:00
abstract::A series of lines pointing towards a central region induces an illusory brightness effect that is systematically related to the angle formed by the lines and the contour of the illusory brightness. As the lines veer to become tangents the illusory brightness decreases. ...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p070605
更新日期:1978-01-01 00:00:00
abstract::This paper focuses on the epistemic conditions of visual perception, ie it concentrates on the question of what kind of knowledge is required for us in order to be able to see colours and shapes as spatial properties of things. According to contemporary theories of sensory perception that follow the tradition of Georg...
journal_title:Perception
pub_type: 杂志文章
doi:10.1068/p5878
更新日期:2008-01-01 00:00:00
abstract::It has been suggested that slow and medium-to-fast speeds of motion may be processed by at least partially separate mechanisms. The purpose of this study was to establish the cortical areas activated during motion-defined form and global motion tasks as a function of speed, using functional magnetic resonance imaging....
journal_title:Perception
pub_type: 杂志文章
doi:10.1177/0301006618771463
更新日期:2018-06-01 00:00:00