Illusions that induce a feeling of ownership over an artificial body or body-part have been used to explore the complex relationships that exist between the brain's representation of the body and the integrity of the body itself. Here we discuss recent findings in both healthy volunteers and clinical populations that highlight the robust relationship that exists between a person's sense of owne...

Previous research has revealed that anticipating pain at a particular location of the body prioritizes somatosensory input presented there. The present study tested whether the spatial features of bodily threat are limited to the exact location of nociception. Participants judged which one of two tactile stimuli, presented to either hand, had been presented first, while occasionally experiencin...

Apotemnophilia is a condition that causes those who have it to not feel "correct" in their own bodies. As a result, an intense obsession develops with removing the limb; this obsession hinders tremendously the patients' social behaviour and societal integration. These patients, in some respects resembling transgendered individuals, feel that the body part (limb) in question is simply "not a par...

This paper presents a method to track human body parts in 3D video sequences for character animation production. A voxel-based Local Shape Histogram descriptor is first extracted as geometric features. A graph-based Multiple Objects Tracking scheme is then used to track these features. Finally, the evaluation against a publicly available real 3D video database demonstrates the performance.

We have an abundance of perceptual information from multiple modalities specifying our body proportions. Consequently, it seems reasonable for researchers to assume that we have an accurate perception of our body proportions. In contrast to this intuition, recent research has shown large, striking distortions in people's perceptions of the relative proportions of their own bodies. Specifically,...

A central problem in motor control, in the representation of space, and in the perception of body schema is how the brain encodes the relative positions of body parts. According to psychophysical studies, this sense of limb position depends heavily on vision. However, almost nothing is currently known about how the brain uses vision to determine or represent the location of the arm or any other...

It has been argued that greater intra-category structural similarity for living things, and the subsequent "visual crowding," makes them more difficult to recognize and name for neurologically damaged individuals and normal subjects (Humphreys et al., 1988). Nevertheless, the precise meaning and quantification of structural similarity remains unclear, as does the rationale for why it necessaril...

The idea of a market in human organs has traditionally met with widespread and emphatic rejection from both secular and religious fronts alike. However, as numerous human beings continue to suffer an uncertain fate on transplant waiting lists, voices are beginning to emerge that are willing at least to explore the option of human organ sales. Anyone who argues for such a option must contend, ho...

Recent studies have shown that a fake body part can be incorporated into human body representation through synchronous multisensory stimulation on the fake and corresponding real body part - the most famous example being the Rubber Hand Illusion. However, the extent to which gross asymmetries in the fake body can be assimilated remains unknown. Participants experienced, through a head-tracked s...

How do we think about the space of bodies? Several accounts of mental representations of bodies were addressed in body part verification tasks. An imagery account predicts shorter times to larger parts (e.g., back < hand). A part distinctiveness account predicts shorter times to more discontinuous parts (e.g., arm < chest). Apart significance account predicts shorter times to parts that are per...