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Conscious Will and ResponsibilityA Tribute to Benjamin Libet$
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Walter Sinnott-Armstrong and Lynn Nadel

Print publication date: 2010

Print ISBN-13: 9780195381641

Published to Oxford Scholarship Online: January 2011

DOI: 10.1093/acprof:oso/9780195381641.001.0001

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Forward Modeling Mediates Motor Awareness

Forward Modeling Mediates Motor Awareness

Chapter:
(p.97) Chapter 9 Forward Modeling Mediates Motor Awareness
Source:
Conscious Will and Responsibility
Author(s):

Francesca Carota

Michel Desmurget

Angela Sirigu

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195381641.003.0010

This chapter focuses on the issue of motor awareness. It addresses three main questions: What exactly are we aware of when making a movement? What is the contribution of afferent and efferent signals to motor awareness? What are the neural bases of motor awareness? It reviews evidence that the motor system is mainly aware of its intention. As long as the goal is achieved, nothing reaches awareness about the kinematic details of the ongoing movements, even when substantial corrections have to be implemented to attain the intended state. The chapter also shows that motor awareness relies mainly on the central predictive computations carried out within the posterior parietal cortex. The outcome of these computations is contrasted with the peripheral reafferent input to build a veridical motor awareness. Some evidence exists that this process involves the premotor areas.

Keywords:   motor awareness, movements, afferent signals, efferent signals, central predictive computations

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