Fig. 2 | Experimental Brain Research

Fig. 2

From: Comparing the efficacy of metronome beeps and stepping stones to adjust gait: steps to follow!

Fig. 2

Schematic representation of phase-delay (+60° phase shifts) perturbations in the sequence of metronome beeps (a gray and black thick lines indicate metronome onsets and thin line segments represent beeps if the perturbation would not have occurred) and stepping stones (d gray and black patches indicate projected stepping stones and the partly occluded white patches represent stepping stones if the perturbation would not have occurred). For both cueing conditions, representative gait events are indicated by diamond markers (representing time instants of heel strike and the center position of the foot in a and d, respectively). In this schematic representation, belt speed was 1.0 m/s, so m in (d) is comparable to s in (a). b and e depict corresponding relative phase time series ϕ and ϕ* for S −3 to S 5 for metronome and stepping stones conditions, respectively; note that in (e) ϕ ≈ ϕ*. c and f depict associated %Corr for S 0S 5 for metronome and stepping stones conditions, respectively. See text for further details

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