No Correlation between Distorted Body Representations Underlying Tactile Distance Perception and Position Sense
Both tactile distance perception and position sense are believed to require that immediate afferent signals be referenced to a stored representation of body size and shape (the body model). For both of these abilities, recent studies have reported that the stored body representations involved are hi...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2016-11-01
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| Series: | Frontiers in Human Neuroscience |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fnhum.2016.00593/full |
| _version_ | 1818035038333173760 |
|---|---|
| author | Matthew R. Longo Rosa Morcom |
| author_facet | Matthew R. Longo Rosa Morcom |
| author_sort | Matthew R. Longo |
| collection | DOAJ |
| description | Both tactile distance perception and position sense are believed to require that immediate afferent signals be referenced to a stored representation of body size and shape (the body model). For both of these abilities, recent studies have reported that the stored body representations involved are highly distorted, at least in the case of the hand, with the hand dorsum represented as wider and squatter than it actually is. Here, we investigated whether individual differences in the magnitude of these distortions are shared between tactile distance perception and position sense, as would be predicted by the hypothesis that a single distorted body model underlies both tasks. We used established task to measure distortions of the represented shape of the hand dorsum. Consistent with previous results, in both cases there were clear biases to overestimate distances oriented along the medio-lateral axis of the hand compared to the proximo-distal axis. Moreover, within each task there were clear split-half correlations, demonstrating that both tasks show consistent individual differences. Critically, however, there was no correlation between the magnitudes of distortion in the two tasks. This casts doubt on the proposal that a common body model underlies both tactile distance perception and position sense. |
| first_indexed | 2024-12-10T06:48:42Z |
| format | Article |
| id | doaj.art-590ae78a856649b6829e37825e0a2cea |
| institution | Directory Open Access Journal |
| issn | 1662-5161 |
| language | English |
| last_indexed | 2024-12-10T06:48:42Z |
| publishDate | 2016-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Human Neuroscience |
| spelling | doaj.art-590ae78a856649b6829e37825e0a2cea2022-12-22T01:58:35ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612016-11-011010.3389/fnhum.2016.00593216809No Correlation between Distorted Body Representations Underlying Tactile Distance Perception and Position SenseMatthew R. Longo0Rosa Morcom1Birkbeck, University of LondonBirkbeck, University of LondonBoth tactile distance perception and position sense are believed to require that immediate afferent signals be referenced to a stored representation of body size and shape (the body model). For both of these abilities, recent studies have reported that the stored body representations involved are highly distorted, at least in the case of the hand, with the hand dorsum represented as wider and squatter than it actually is. Here, we investigated whether individual differences in the magnitude of these distortions are shared between tactile distance perception and position sense, as would be predicted by the hypothesis that a single distorted body model underlies both tasks. We used established task to measure distortions of the represented shape of the hand dorsum. Consistent with previous results, in both cases there were clear biases to overestimate distances oriented along the medio-lateral axis of the hand compared to the proximo-distal axis. Moreover, within each task there were clear split-half correlations, demonstrating that both tasks show consistent individual differences. Critically, however, there was no correlation between the magnitudes of distortion in the two tasks. This casts doubt on the proposal that a common body model underlies both tactile distance perception and position sense.http://journal.frontiersin.org/Journal/10.3389/fnhum.2016.00593/fullbody schemabody imageposition senseTactile DistanceBody Represenation |
| spellingShingle | Matthew R. Longo Rosa Morcom No Correlation between Distorted Body Representations Underlying Tactile Distance Perception and Position Sense Frontiers in Human Neuroscience body schema body image position sense Tactile Distance Body Represenation |
| title | No Correlation between Distorted Body Representations Underlying Tactile Distance Perception and Position Sense |
| title_full | No Correlation between Distorted Body Representations Underlying Tactile Distance Perception and Position Sense |
| title_fullStr | No Correlation between Distorted Body Representations Underlying Tactile Distance Perception and Position Sense |
| title_full_unstemmed | No Correlation between Distorted Body Representations Underlying Tactile Distance Perception and Position Sense |
| title_short | No Correlation between Distorted Body Representations Underlying Tactile Distance Perception and Position Sense |
| title_sort | no correlation between distorted body representations underlying tactile distance perception and position sense |
| topic | body schema body image position sense Tactile Distance Body Represenation |
| url | http://journal.frontiersin.org/Journal/10.3389/fnhum.2016.00593/full |
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