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Fig. 5. Percentage of the total 90° of head/neck and postcranial body rotation
that occurred during each phase of the stride cycle. Head/neck (open bars) and
body (filled bars) rotation were the changes in the angles made by markings 1
and 2 and 2 and 4 with the horizontal, respectively. Flight phase 1 occurred
between hindlimb takeoff and forelimb plant and flight phase 2 occurred
between forelimb takeoff and hindlimb plant. Most stride cycles contained one
of the two flight phases but not both. Values are means ± S.E.M. for
the six mice.