Sinistrals’ upper hand: Evidence for handedness differences in the representation of body space

Hach, Sylvia; Schütz‐Bosbach, Simone

doi:10.1016/j.bandc.2009.12.001

Cited by 30 publications

(29 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several recent studies have found evidence for lateral asymmetries in body representations related to handedness (e.g., Gentilucci et al, 1998;Hach & Schütz-Bosbach, 2010;Linkenauger et al, 2009). In the studies of Hach and Schütz-Bosbach anisotropy of tactile size perception in the present study, with nearly identical effects on the two hands.…”

Section: Discussionsupporting

confidence: 66%

“…The only body part investigated for which anisotropy has not been found is, intriguingly, the belly (Green, 1982). Analogous distortions have also been found on tasks in which representations of body size and shape are inferred from the pattern of proprioceptive localization judgments, both for the hand (Longo & Haggard, 2010 and torso (Hach & Schütz-Bosbach, 2010). Fuentes and colleagues have also found similar biases using a 'body Bilateral Tactile Anisotropy 18 image task' in which participants judge the relative location of body landmarks by clicking the corresponding place on a monitor, both for the body as a whole (Fuentes, Longo, & Haggard, 2013a;Fuentes et al, 2013b) and the face specifically (Fuentes et al, 2013c).…”

Section: Discussionmentioning

confidence: 71%

“…Another possibility is that laterality effects may be more apparent at larger spatial scales. While the present study and that of Longo and Haggard (2010) focused specifically on the hand, studies showing lateralized effects have focused on the entire arm (Linkenauger et al, 2009) or the torso (Hach & Schütz-Bosbach, 2010). …”

Section: Discussionmentioning

confidence: 89%

“…However, to our knowledge, no study has compared distortions on the two hands in the same participants. Several recent studies have provided evidence for lateral asymmetries in body representations (e.g., Gentilucci, Daprati, & Gangitano, 1998;Hach & Schütz-Bosbach, 2010Linkenauger et al, Bilateral Tactile Anisotropy 5 2009), suggesting that there may be interesting differences in perceptual distortion as a function of handedness. Linkenauger and colleagues (2009), for example, found that right-handed participants overestimated the length of their right arm in comparison to their left arm, an effect which was correlated with asymmetries in grip strength between the two hands.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Bilateral Symmetry of Distortions of Tactile Size Perception

2015

View full text Add to dashboard Cite

The perceived distance between touches on the limbs is generally bigger for distances oriented across the width of the limb than for distances oriented along the length of the limb. The present study aimed to investigate the coherence of such distortions of tactile size perception across different skin surfaces. We investigated distortions of tactile size perception on the dorsal and palmar surfaces of both the left and right hands as well as the forehead. Participants judged which of two tactile distances felt larger. One distance was aligned with the proximodistal axis (along the body), the other with the mediolateral axis (across the body). Clear distortions were found on all five skin surfaces, with stimuli oriented across the width of the body being perceived as farther apart than those oriented along the length of the body. Consistent with previous results, distortions were smaller on the palmar than on the dorsal hand surface. Distortion on the forehead was intermediate between the dorsal and palmar surfaces. There were clear correlations between distortion on the left and right hands, for both the dorsal and palmar skin surfaces. In contrast, within each hand, there was no significant correlation between the two skin surfaces. Distortion on the forehead was not significantly correlated with that on any of the other skin surfaces. These results provide evidence for bilaterally symmetric representations underlying tactile size perception.

show abstract

Section: Discussionsupporting

confidence: 66%

Section: Discussionmentioning

confidence: 71%

Section: Discussionmentioning

confidence: 89%

mentioning

confidence: 99%

See 2 more Smart Citations

Bilateral Symmetry of Distortions of Tactile Size Perception

2015

View full text Add to dashboard Cite

show abstract

“…Recently, a growing literature has started to show that distorted body representations are not unique to disease, but a characteristic part of healthy perception/cognition. Indeed, numerous studies have revealed large and highly consistent distortions of body representations in healthy human adults (Fuentes, Longo, & Haggard, 2013;Hach & Schütz-Bosbach, 2010;Linkenauger, Wong, et al, 2014;Linkenauger, Witt, Bakdash, Stefanucci, & Proffitt, 2009;, 2011, 2012a, 2012bSaulton, Dodds, Bülthoff, & de la Rosa, 2015).…”

Section: Introductionmentioning

confidence: 99%

Distorted body representations are robust to differences in experimental instructions

Tamè

Bumpus

Linkenauger

et al. 2017

Atten Percept Psychophys

View full text Add to dashboard Cite

Several recent reports have shown that even healthy adults maintain highly distorted representations of the size and shape of their body. These distortions have been shown to be highly consistent across different study designs and dependent measures. However, previous studies have found that visual judgments of size can be modulated by the experimental instructions used, for example, by asking for judgments of the participant's subjective experience of stimulus size (i.e., apparent instructions) versus judgments of actual stimulus properties (i.e., objective instructions).Previous studies investigating internal body representations have relied exclusively on 'apparent' instructions. Here, we investigated whether apparent versus objective instructions modulate findings of distorted body representations underlying position sense (Exp. 1), tactile distance perception (Exp. 2), as well as the conscious body image (Exp. 3). Our results replicate the characteristic distortions previously reported for each of these tasks and further show that these distortions are not affected by instruction type (i.e., apparent vs. objective). These results show that the distortions measured with these paradigms are robust to differences in instructions and do not reflect a dissociation between perception and belief.3

show abstract

Hard and fast rules about the body: contributions of the action stream to judging body space

et al. 2011

View full text Add to dashboard Cite

Analogously to the visual system, somatosensory processing may be segregated into two streams, with the body constituting either part of the action system or a perceptual object. Experimental studies with participants free from neurological disease which test this hypothesis are rare, however. The present study explored the contributions of the two putative streams to a task that requires participants to estimate the spatial properties of their own body. Two manipulations from the visuospatial literature were included. First, participants were required to point either backward towards pre-defined landmarks on their own body (egocentric reference frame) or to a forward projection of their own body (allocentric representation). Second, a manipulation of movement mode was included, requiring participants to perform pointing movements either immediately, or after a fixed delay, following instruction. Results show that accessing an allocentric representation of one's own body results in performance changes. Specifically, the spatial bias shown to exist for body space when pointing backward at one's own body disappears when participants are requested to mentally project their body to a pre-defined location in front space. Conversely, delayed execution of pointing movements does not result in performance changes. Altogether, these findings provide support for a constrained dual stream hypothesis of somatosensory processing and are the first to show similarities in the processing of body space and peripersonal space.

show abstract

Sinistrals’ upper hand: Evidence for handedness differences in the representation of body space

Cited by 30 publications

References 72 publications

Bilateral Symmetry of Distortions of Tactile Size Perception

Bilateral Symmetry of Distortions of Tactile Size Perception

Distorted body representations are robust to differences in experimental instructions

Hard and fast rules about the body: contributions of the action stream to judging body space

Contact Info

Product

Resources

About