A New Sensory Feedback System for Lower-Limb Amputees: Assessment of Discrete Vibrotactile Stimuli Perception During Walking

Conference paper
Part of the Biosystems & Biorobotics book series (BIOSYSROB, volume 22)


Sensory feedback systems can improve gait performance of lower-limb amputees by providing information about the foot-ground interaction force. This study presents a new platform designed to deliver bilateral vibrations on the waist of the user, synchronously with specific gait events. Preliminary perceptual tests were carried out on five healthy subjects to investigate the perception thresholds on the abdominal region. The reaction time and the percentage of correct perceptions were computed to compare three stimulation levels: 50%, 70% and 100% of the maximum vibration amplitude (i.e., 1.5 g, 1.9 g and 2.2 g). The reaction times decreased with higher activation levels. The percentage of correct perceptions was 40% with 50% stimulation level and higher than 97% with 70% and 100% stimulation levels, respectively. The results suggest that vibration amplitudes of 1.9 g provide vibrotactile stimulation that can be effectively perceived during walking, thus used to convey sensory information.


Sensory Feedback System Lower Limb Amputation Stimulation Level Improve Gait Performance Correct Perception 
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  1. 1.
    Tucker, M.R., Olivier, J., Pagel, A., Bleuler, H., Bouri, M., Lambercy, O., del R. Millán, J., Riener, R., Vallery, H., Gassert, R.: Control strategies for active lower extremity prosthetics and orthotics: a review. J. Neuroeng. Rehabil. 12(1), 1 (2015)CrossRefGoogle Scholar
  2. 2.
    Zambarbieri, D., Schmid, M., Verni, G.: Intelligent systems and technologies in rehabilitation engineering. In: Teodorescu, H.N.L., Jain, L.C. (eds.), pp. 129–151 (2001)Google Scholar
  3. 3.
    Crea, S., Cipriani, C., Donati, M., Carrozza, M.C., Vitiello, N.: Providing time-discrete gait information by wearable feedback apparatus for lower-limb amputees: usability and functional validation. IEEE Trans. Neural Syst. Rehabil. Eng. 23(2), 250–257 (2015)CrossRefGoogle Scholar
  4. 4.
    Crea, S., Edin, B.B., Knaepen, K., Meeusen, R., Vitiello, N.: Time-discrete vibrotactile feedback contributes to improved gait symmetry in patients with lower limb amputations: case series. Phys. Ther. 97(2), 198–207 (2017)CrossRefGoogle Scholar
  5. 5.
    Crea, S., Donati, M., De Rossi, S., Oddo, C., Vitiello, N.: A wireless flexible sensorized insole for gait analysis. Sensors 14(1), 1073–1093 (2014)CrossRefGoogle Scholar
  6. 6.
    Cholewiak, R.W., Brill, J.C., Schwab, A.: Vibrotactile localization on the abdomen: effects of place and space. Percept. Psychophys. 66(6), 970–987 (2004)CrossRefGoogle Scholar
  7. 7.
    Jones, L.A., Lederman, S.J.: Human Hand Function. Oxford University Press, London (2006)CrossRefGoogle Scholar
  8. 8.
    Sharma, A., Leineweber, M.J., Andrysek, J.: Effects of cognitive load and prosthetic liner on volitional response times to vibrotactile feedback. J. Rehabil. Res. Dev. 53(4), 473–482 (2016)CrossRefGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.The BioRobotics Institute, Scuola Superiore Sant’AnnaPisaItaly
  2. 2.Fondazione Don Carlo GnocchiMilanItaly

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