Fig. 1From: Long-term use of implanted peroneal functional electrical stimulation for stroke-affected gait: the effects on muscle and motor nerveExample of paretic side (a) and non-paretic side (b) tibialis anterior. The paretic tibialis anterior muscle appears whiter on the screen (i.e. a higher echogenicity), indicating infiltration of intramuscular fat and fibrous tissue. Echogenicity z-scores were z = 1.45 and z = 0.29 for the paretic and non-paretic side, respectivelyBack to article page