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Fig. 2. Unit activities identified from extracellular recordings of the whole
circumesophageal commissure using discriminating software. (A) Raw recording
data during walking (upper trace); these data are partially expanded in the
lower trace. Four units could be discriminated in this example, as indicated
by four different symbols. (B) Activity of each unit during forward walking
(i) and backward walking (ii). The histograms were based on 1 s time bins.
Units 3a and 3b showed almost the same activity during forward and backward
walking. Units 3c and 3d showed higher activities during backward walking than
during forward walking. The vertical broken lines indicate the time of onset
of walking behavior. The thick gray bar at the bottom indicates the expanded
part of the data shown in A. The insets on the right (iii) show
superimposition of each unit. They are expanded in the time scale as indicated
but are the same size in the voltage scale as in A except that unit 3a was
reduced to half of A in the voltage scale.
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