Disentangling the alien and anarchic hand

Clelia Marchetti, Sergio Della Sala

Research output: Contribution to journalArticle

110 Citations (Scopus)

Abstract

"Anarchic hand" is the term by which we propose to identify complex goal-directed movements of a hand, which are performed against the patient's will, and that cannot be voluntarily inhibited. This phenomenon should be differentiated from the feeling of nonbelonging of a hand, known in the literature since the report of Brion and Jedinak (1972), to which the term "alien hand" should be retained. Anarchic hand, which is linked with anterior lesions of the corpus callosum and the supplementary motor area contralateral to the wayward hand, should be conceived as s "frontal" sign. Alien hand, which has been reported after posterior lesions of the corpus callosum, probably encroaching upon the parietal cortex, should be thought of as a partial hemisomatognosia, that is, a unilateral "loss of the knowledge or sense of one's own body and bodily condition" (Beaumont, Kenealy, & Rogers, 1996, p. 108). This distinction will ease the description and the interpretation of new cases of alien and anarchic hand and will avoid some of the confusion currently present in the field.

Original languageEnglish
Pages (from-to)191-207
Number of pages17
JournalCognitive Neuropsychiatry
Volume3
Issue number3
Publication statusPublished - Aug 1998

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Hand
Corpus Callosum
Parietal Lobe
Motor Cortex
Emotions

ASJC Scopus subject areas

  • Psychiatry and Mental health

Cite this

Disentangling the alien and anarchic hand. / Marchetti, Clelia; Della Sala, Sergio.

In: Cognitive Neuropsychiatry, Vol. 3, No. 3, 08.1998, p. 191-207.

Research output: Contribution to journalArticle

Marchetti, C & Della Sala, S 1998, 'Disentangling the alien and anarchic hand', Cognitive Neuropsychiatry, vol. 3, no. 3, pp. 191-207.
Marchetti, Clelia ; Della Sala, Sergio. / Disentangling the alien and anarchic hand. In: Cognitive Neuropsychiatry. 1998 ; Vol. 3, No. 3. pp. 191-207.
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