Changes in spatial position of hands modify tactile extinction but not disownership of contralesional hand in two right brain-damaged patients.

20 dicembre 2004
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Authors

Moro VZampini MAglioti SM.

Abstract

Somatic misperceptions and misrepresentations, like supernumerary phantom limb and denial of ownership of a given body part, have typically been reported following damage to the right side of the brain. These symptoms typically occur with personal or extrapersonal neglect and extinction of left-sided stimuli, suggesting that all these different symptoms may be linked to the same neural substrate. In the present research, we tested two right brain-damaged (RBD) patients to find out whether changing the position of the hands in space influences tactile extinction and denial of ownership to the same extent. Results showed that manipulation of the spatial position of the hands reduces tactile extinction but leaves denial of ownership of the left hand unaffected. Such a dissociation suggests that delusional misperceptions may be independent from somatic neglect and that representation of hands in space and attribution of ownership are dynamically mapped in at least partly separate neural substrates.

Neurocase. 2004 Dec;10(6):437-43.
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Books and Monographs

Il test di coordinazione motoria di Charlop-Atwell: la standardizzazione italiana.
Colella R, Quadri G, Boscaini F, Moro V, Albaret JM, 2014

Tornare a scuola dopo una grave cerebrolesione Moro Valentina, Rodolfi Chiara, 2012

La plasticità cerebrale. Alle radici del cambiamento
Moro Valentina, Filippi Barbara, 2010

L'agire educativo nella riabilitazione neuropsicologica
Moro Valentina, 2005

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