The time course of amplitude specification in brief interceptive actions.

Experimental Brain Research
Welber MarinovicJ R Tresilian

Abstract

The interception of fast moving objects typically allows the object to be seen for only a short period of time. This limits the time available to prepare the movement. To deal with short preparation intervals, performers are likely to prepare a motor program in advance. Although motor preparation may begin before the target is seen, accuracy requires that certain program parameters are determined from observations of the target. In the experiments reported here we sought to determine the last moment at which information about the distance to move (amplitude) can be incorporated into a program. We employed an empirical protocol that allowed us to examine whether new amplitude information is incorporated discretely or continuously into the program during short intervals prior to movement onset (MO)-the preparation interval. Participants were trained to hit targets at two different distances with movements of a specific duration (180 ms): targets were moving in "Experiment 1" and stationary in "Experiment 2". This method permitted an estimate of MO time. Preparation intervals were manipulated by delivering a stimulus cue for movement amplitude at varying times prior to the estimated MO. Results demonstrated that amplitude informat...Continue Reading

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Citations

Jan 14, 2009·Experimental Brain Research·Myrka ZagoFrancesco Lacquaniti
Jul 1, 2009·Experimental Brain Research·Welber MarinovicJames R Tresilian
Nov 3, 2009·Experimental Brain Research·Myrka ZagoFrancesco Lacquaniti
Jun 24, 2011·Experimental Brain Research·Welber Marinovic, Guy Wallis
Nov 21, 2012·PloS One·Gianfranco BoscoFrancesco Lacquaniti
Oct 2, 2013·The Journal of Physiology·Welber MarinovicStephan Riek
Jun 16, 2012·Human Movement Science·Hiroki NakamotoYoichi Ohta
Sep 21, 2010·Current Opinion in Neurobiology·Robert S Turner, Michel Desmurget
Jun 1, 2010·Acta Psychologica·Welber MarinovicJames R Tresilian
Feb 25, 2010·Experimental Psychology·Welber MarinovicJames R Tresilian
May 27, 2015·Brain and Cognition·Sachi IkudomeShiro Mori
Apr 25, 2009·NeuroImage·Mario TombiniPaolo M Rossini
Nov 18, 2011·Journal of Neurophysiology·Aymar de RugyGuy Wallis

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