BACKGROUND: After transfemoral amputation, many hours of practice are needed to re-learn walking with a prosthesis. The long adaptation process that consolidates a novel gait pattern seems to depend on cerebellar function for reinforcement of specific gait modifications, but the precise, step-by-step gait modifications (e.g., foot placement) most likely rely on top-down commands from the brainstem and cerebral cortex. The aim of this study was to identify, in able-bodied individuals, the specific modulations of cortical rhythms that accompany short-term gait modifications during first-time use of a dummy prosthesis. METHODS: Fourteen naïve participants walked on a treadmill without (one block, 4 min) and with a dummy prosthesis (three blocks, 3 × 4 min), while ground reaction forces and 32-channel EEG were recorded. Gait cycle duration, stance phase duration, step width, maximal ground reaction force and, ground reaction force trace over time were measured to identify gait modifications. Independent component analysis of EEG data isolated brain-related activity from distinct anatomical sources. The source-level data were segmented into gait cycles and analyzed in the time-frequency domain to reveal relative enhancement or suppression of intrinsic cortical oscillations. Differences between walking conditions were evaluated with one-way ANOVA and post-hoc testing (α = 0.05). RESULTS: Immediate modifications occurred in the gait parameters when participants were introduced to the dummy prosthesis. Except for gait cycle duration, these modifications remained throughout the duration of the experimental session. Power modulations of the theta, mu, beta, and gamma rhythms, of sources presumably from the fronto-central and the parietal cortices, were found across the experimental session. Significant power modulations of the theta, beta, and gamma rhythms within the gait cycle were predominately found around the heel strike of both feet and the swing phase of the right (prosthetic) leg. CONCLUSIONS: The modulations of ...


    Access

    Download


    Export, share and cite



    Title :

    Rhythmic neural activity is comodulated with short-term gait modifications during first-time use of a dummy prosthesis:a pilot study



    Publication date :

    2020-10-08


    Remarks:

    Kooiman , V G M , van Keeken , H G , Maurits , N M , Weerdesteyn , V & Solis-Escalante , T 2020 , ' Rhythmic neural activity is comodulated with short-term gait modifications during first-time use of a dummy prosthesis : a pilot study ' , Journal of Neuroengineering and Rehabilitation , vol. 17 , no. 1 , 134 . https://doi.org/10.1186/s12984-020-00761-8



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    629



    The effects of different frequencies of rhythmic acoustic stimulation on gait stability in healthy elderly individuals: a pilot study

    Roberta Minino / Emahnuel Troisi Lopez / Pierpaolo Sorrentino et al. | BASE | 2021

    Free access

    Helicopter cockpit evaluation method based on pilot physical dummy and physical dummy

    LI ZHENG / GUO JUNQIAO / HUANG LEI et al. | European Patent Office | 2023

    Free access

    The First Standard Automotive Crash Dummy

    Starkey, J. A. / Young, J. W. / Auerbach, Julie H. et al. | SAE Technical Papers | 1969


    Feasibility of external rhythmic cueing with the Google Glass for improving gait in people with Parkinson’s disease

    Zhao, Yan / Nonnekes, Jorik / Storcken, Erik J M et al. | BASE | 2016

    Free access

    Development of Pedestrian Dummy Leg (First Report)

    Hamada, M. / Society of Automotive Engineers of Japan | British Library Conference Proceedings | 2007