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Anarchic hand with abnormal agency following right inferior parietal lobe damage: a case report

Jenkinson, Paul M.; Edelstyn, Nicola; Preston, Catherine; Ellis, Simon J.

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Authors

Paul M. Jenkinson

Catherine Preston

Simon J. Ellis



Abstract

Anarchic hand syndrome (AHS) is characterized by goal-directed movements performed without volitional control (agency). Different AHS subtypes have been identified; however, few studies have examined the posterior subtype. We report a case of AHS following right-hemisphere parietal damage, with left-sided somatosensory and proprioceptive impairment. Agency was examined for nonanarchic (volitional) movements performed using the anarchic hand. The patient experienced abnormal agency for movements whether motor intention and visual feedback were congruent or incongruent, but not when intention was absent (passive movement). Findings suggest a general disturbance of veridical motor awareness and agency in this case of parietal AHS.

Acceptance Date May 14, 2014
Publication Date Jun 5, 2014
Publicly Available Date Mar 28, 2024
Journal Neurocase
Print ISSN 1355-4794
Publisher Routledge
Pages 471 -478
DOI https://doi.org/10.1080/13554794.2014.925936
Keywords agency, anarchic hand, motor awareness, parietal lobe, adult, Alien Hand Syndrome, awareness, brain injuries, female, humans, psychomotor performance, somatosensory disorders, volition, young adult
Publisher URL http://dx.doi.org/10.1080/13554794.2014.925936

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