The broken escalator phenomenon. Aftereffect of walking onto a moving platform

Experimental Brain Research
R F Reynolds, A Bronstein

Abstract

We investigated the physiological basis of the 'broken escalator phenomenon', namely the sensation that when walking onto an escalator which is stationary one experiences an odd sensation of imbalance, despite full awareness that the escalator is not going to move. The experimental moving surface was provided by a linear motor-powered sled, moving at 1.2 m/s. Sled velocity, trunk position, trunk angular velocity, EMG of the ankle flexors-extensors and foot-contact signals were recorded in 14 normal subjects. The experiments involved, initially, walking onto the stationary sled (condition Before). Then, subjects walked 20 times onto the moving sled (condition Moving), and it was noted that they increased their walking velocity from a baseline of 0.60 m/s to 0.90 m/s. After the moving trials, subjects were unequivocally warned that the platform would no longer move and asked to walk onto the stationary sled again (condition After). It was found that, despite this warning, subjects walked onto the stationary platform inappropriately fast (0.71 m/s), experienced a large overshoot of the trunk and displayed increased leg electromyographic (EMG) activity. Subjects were surprised by their own behaviour and subjectively reported that t...Continue Reading

Citations

Apr 28, 2006·Experimental Brain Research·K L BundayA M Bronstein
Jun 18, 2010·Experimental Brain Research·Gonzalo MárquezMiguel Fernández-del-Olmo
Mar 8, 2013·Experimental Brain Research·K-S TangA M Bronstein
Aug 8, 2007·Journal of Neural Transmission·R Reynolds, A Bronstein
Jun 29, 2005·Journal of Experimental Psychology. Human Perception and Performance·Frank H DurginKatherine A Walley
Sep 11, 2009·Journal of Neurophysiology·Karen L Bunday, Adolfo M Bronstein
Feb 12, 2010·Journal of Neurophysiology·Laura A Malone, Amy J Bastian
Apr 10, 2014·Experimental Brain Research·Mitesh PatelAdolfo M Bronstein
Feb 26, 2014·Human Movement Science·Anderson Souza Castelo OliveiraUwe Gustav Kersting
Aug 4, 2009·Annals of the New York Academy of Sciences·Adolfo M BronsteinRaymond Reynolds
Sep 22, 2010·Vision Research·Jing Tian, David S Zee
Apr 1, 2015·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Federica Visco-ComandiniAlexandra Battaglia-Mayer
May 25, 2015·Diabetologia·James A Levine
Oct 24, 2014·Journal of Motor Behavior·Katrin Rapp, Herbert Heuer
Jul 14, 2010·Neuroscience·D A GreenA M Bronstein
Apr 24, 2012·Gait & Posture·Anderson Souza Castelo OliveiraUwe Gustav Kersting
Dec 1, 2011·Paladyn : Journal of Behavioral Robotics·Ismet HandzicKyle B Reed
Oct 26, 2016·Current Biology : CB·J Maxwell Donelan
Sep 8, 2006·Neuroreport·Raymond F Reynolds, Adolfo M Bronstein
Jan 12, 2007·Current Opinion in Neurology·Adolfo M Bronstein
Jan 11, 2008·Journal of Neurophysiology·Karen L Bunday, Adolfo M Bronstein
Aug 29, 2003·Journal of Neurophysiology·R F Reynolds, A M Bronstein
Aug 12, 2020·Brain : a Journal of Neurology·Denise LinDiego Kaski
Mar 15, 2018·Journal of Neuroengineering and Rehabilitation·Gianluca U SorrentoJoyce Fung
Mar 3, 2020·Journal of Vestibular Research : Equilibrium & Orientation·Mitesh PatelAdolfo M Bronstein
May 10, 2017·Experimental Brain Research·Zrinka Potocanac, Jacques Duysens
Jul 15, 2015·Journal of Neurophysiology·Mitesh PatelAdolfo M Bronstein
Apr 11, 2018·Frontiers in Human Neuroscience·Gabrielle MaestasHyunglae Lee
Jun 7, 2014·The Journal of Experimental Biology·Renato PagliaraJ Maxwell Donelan

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