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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Distorted body representations are robust to differences in experimental instructions
AU - Tame, Luigi
AU - Bumpus, Nicola
AU - Linkenauger, Sally A.
AU - Longo, Matthew R.
PY - 2017/5
Y1 - 2017/5
N2 - 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.
AB - 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.
KW - Body parts
KW - Instructions judgment size
KW - Distortions body representations
KW - TACTILE SIZE PERCEPTION
KW - IMPLICIT HAND MAPS
KW - TOOL-USE
KW - ANOREXIA-NERVOSA
KW - STIMULUS-ERROR
KW - FAMILIAR SIZE
KW - PHANTOM LIMBS
KW - IMAGE
KW - SHAPE
KW - DISTANCE
U2 - 10.3758/s13414-017-1301-1
DO - 10.3758/s13414-017-1301-1
M3 - Journal article
VL - 79
SP - 1204
EP - 1216
JO - Attention, Perception, and Psychophysics
JF - Attention, Perception, and Psychophysics
SN - 1943-3921
IS - 4
ER -