Fig.4. The relative timing of EMG onset and offset (A,E), absolute EMG burst duration (B,F), relative burst duration (C,G) and relative EMG intensity (D,H) for the biceps femoris (left column) and vastus lateralis (right column). Data are shown for walking (W), trotting (T) and galloping [trailing limb G(T), leading limb G(L)]. Mean locomotor speeds for each gait are the same as for Fig.3. The dashed horizontal lines in A and E represent the onset of the stance phase (time of foot down). Each symbol represents the average values of all analyzed trials from a particular individual for that particular gait. Different symbols stand for different individuals (N=4 for each muscle). Values are means ± S.D.
