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research article

Crossed somatoparaphrenia: an unusual new case and a review of the literature

Perren, Fabienne
•
Heydrich, Lukas  
•
Blanke, Olaf  
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2015
Experimental Brain Research

Somatoparaphrenia is a delusional misidentification and confabulation of body parts, usually arm or hand, opposite to a cerebral lesion, generally of the "minor" right hemisphere. There is some controversy concerning lesion site ( fronto-parietal; parieto-temporal; posterior insula, additional subcortical nuclei) or necessary associated symptoms ( hemiparesis/plegia, anosognosia, neglect, position sense deficit). We here present a patient who is unusual in many respects, that is: ( 1) he is a right-hander with somatoparaphrenia after a "dominant" left-hemisphere lesion associated with aphasia and ideomotor apraxia, but also with right hemineglect. He thus has "crossed" somatoparaphrenia; ( 2) his delusional misidentification concerned the right leg and not the arm or hand; ( 3) he has no anosognosia; ( 4) his proprioception is disturbed for the leg only; and ( 5) the lesion site is very posterior, a left occipito-parietal haemorrhage without involvement of the frontal lobe or the posterior insula. We present this case together with the seven other cases of "crossed somatoparaphrenia" with and without aphasia we found since 1935 in the literature and discuss their relevance in relation to the above controversies.

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Type
research article
DOI
10.1007/s00221-014-4101-z
Web of Science ID

WOS:000348048100017

Author(s)
Perren, Fabienne
Heydrich, Lukas  
Blanke, Olaf  
Landis, Theodor
Date Issued

2015

Publisher

Springer

Published in
Experimental Brain Research
Volume

233

Issue

1

Start page

175

End page

179

Subjects

Somatoparaphrenia

•

Left brain damage

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Right hemineglect

•

Anosognosia

•

Position sense

•

Cerebral laterality

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LNCO  
CNP  
Available on Infoscience
May 29, 2015
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/114522
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