Fig. 1From: Immediate application of low-intensity electrical noise reduced responses to visual perturbations during walking in individuals with cerebral palsyTop panel A depicts a subthreshold signal (thick black line) that crosses the threshold (dashed black line) after addition of noise (gray). Bottom panel B depicts the action potentials fired at threshold crossings, leading to spike trains. Adapted with permission from Moss et al. [19]Back to article page