Show Summary Details

Page of

PRINTED FROM OXFORD HANDBOOKS ONLINE (www.oxfordhandbooks.com). © Oxford University Press, 2018. All Rights Reserved. Under the terms of the licence agreement, an individual user may print out a PDF of a single chapter of a title in Oxford Handbooks Online for personal use (for details see Privacy Policy and Legal Notice).

date: 26 June 2019

Abstract and Keywords

To successfully interact with the environment, goal-oriented movements made by human limbs must be guided by instructions from the brain. Loss of the ability to program purposeful skilled movements, in the absence of any motor, sensory, or cognitive deficit that could fully account for this disability, is called apraxia. Several types of apraxia were described by Hugo Liepmann in the beginning of the 20th century: ideomotor apraxia, where patients make spatial movement and postural errors as well as temporal errors, limb-kinetic apraxia, where patients are unable to perform precise independend and coordinated finger movements and ideational apraxia, where patients fail to correctly sequence a series of action. More recently, three other types of apraxia have been described: conceptual apraxia, where patients have a loss of mechanical knowledge; dissociation apraxia, where patients are impaired at performing a skilled act in response to stimuli in one modality but can perform normally when the stimulus is given in another modality; and conduction apraxia, where patients are impaired at action imitation. This chapter, using an historical approach, reviews the signs associated with each of these forms of apraxia, as well as their pathophysiology.

Keywords: ideomotor apraxia, limb-kinetic apraxia, ideational apraxia, conceptual apraxia, dissociation apraxia, conduction apraxia, movement representations, innervatory patterns

Access to the complete content on Oxford Handbooks Online requires a subscription or purchase. Public users are able to search the site and view the abstracts and keywords for each book and chapter without a subscription.

Please subscribe or login to access full text content.

If you have purchased a print title that contains an access token, please see the token for information about how to register your code.

For questions on access or troubleshooting, please check our FAQs, and if you can''t find the answer there, please contact us.