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Internalization of physical laws as revealed by the study of action instead of perception

Published online by Cambridge University Press:  20 August 2002

Francesco Lacquaniti  and
Mirka Zago
Francesco Lacquaniti
Affiliation:
Human Physiology Section, Scientific Institute Santa Lucia, University of Rome “Tor Vergata,” 00179 Rome, Italylacquaniti@caspur.itm.zago@hsantalucia.it
Mirka Zago
Affiliation:
Human Physiology Section, Scientific Institute Santa Lucia, University of Rome “Tor Vergata,” 00179 Rome, Italylacquaniti@caspur.itm.zago@hsantalucia.it
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Abstract

We review studies on catching that reveal internalization of physics for action control. In catching free-falling balls, an internal model of gravity is used by the brain to time anticipatory muscle activation, modulation of reflex responses, and tuning of limb impedance. An internal model of the expected momentum of the ball at impact is used to scale the amplitude of anticipatory muscle activity. [Barlow; Hecht; Shepard]

Type
Brief Report
Information
Behavioral and Brain Sciences , Volume 24 , Issue 4 , August 2001 , pp. 684 - 685
Copyright
© 2001 Cambridge University Press

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