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Organized Toe Maps in Extreme Foot Users
Dempsey-Jones
H
author
Wesselink
D
B
author
Friedman
J
author
Makin
T
R
author
2019
Although the fine-grained features of topographic maps in the somatosensory cortex can be shaped by everyday experience, it is unknown whether behavior can support the expression of somatotopic maps where they do not typically occur. Unlike the fingers, represented in all primates, individuated toe maps have only been found in non-human primates. Using 1-mm resolution fMRI, we identify organized toe maps in two individuals born without either upper limb who use their feet to substitute missing hand function and even support their profession as foot artists. We demonstrate that the ordering and structure of the artists toe representation mimics typical hand representation. We further reveal hand-like features of activity patterns, not only in the foot area but also similarly in the missing hand area. We suggest humans may have an innate capacity for forming additional topographic maps that can be expressed with appropriate experience.
doi: 10.1016/j.celrep.2019.08.027
exported from refbase (https://refbase.nfshost.com/show.php?record=99), last updated on Tue, 10 Sep 2019 14:55:48 +0000
text
https://doi.org/10.1016/j.celrep.2019.08.027
https://refbase.nfshost.com/files/dempsey-jones/2019/99_Dempsey-Jones_etal2019.pdf
https://doi.org/10.1016/j.celrep.2019.08.027
10.1016/j.celrep.2019.08.027
Dempsey-Jones_etal2019
Cell Reports
Cell Reports
2019
Elsevier
continuing
periodical
academic journal
28
11
2748
2756.e4
2211-1247
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