Abstract Neuroprostheses that activate musculature of the lower extremities can enable standing and movement after paralysis. Current systems are functionally limited by rapid muscle fatigue induced by conventional. non-varying stimulus waveforms. Previous work has shown that sum of phase-shifted sinusoids (SOPS) stimulation. http://thebookmarkid.com/story19599519/integrando-a-hist%C3%B3ria-oral-e-as-narrativas-a-abordagens-pedag%C3%B3gicas-problematizadoras-na-forma%C3%A7%C3%A3o-inicial-de-professores-de-matem%C3%A1tica