Fig. 3
From: Regulation of locomotor speed and selection of active sets of neurons by V1 neurons
Activity of motoneurons (MNs) in control and En1-DTA fish during fictive swimming. a Typical morphology of fast-type MNs. The horizontal dotted line at the top indicates the dorsal boundary of the trunk muscles. The horizontal dotted line at the bottom indicates the boundary of the dorsally located muscles and ventrally located muscles. Scale bar, 20 μm. b Typical morphology of slow-type MNs. Scale bar, 20 μm. c Example of simultaneous recordings between fast-type MNs (loose-patch) and ventral root (VR) in control fish. d Example of simultaneous recordings between fast-type MNs and VR in En1-DTA fish. e Example of simultaneous recordings between slow-type MNs and VR in control fish. f Example of simultaneous recordings between slow-type MNs and VR in En1-DTA fish. g, h Numbers of spikes (g) and firing probability in each cycle (h) during fast/strong swim. Each circle represents each cell (n = 8 for fast-type MNs in control [n = 6 for PMNs, n = 2 for dvs]; n = 14 for fast-type MNs in En1-DTA [n = 8 for PMNs, n = 6 for dvs]; n = 11 for slow-type MNs in control; n = 14 for slow-type MNs in En1-DTA). **P < 0.01 (Mann–Whitney U test, P = 0.14 [g, fast-type MNs], P = 3.5 × 10−5 [g, slow-type MNs], P = 0.11 [h, fast-type MNs] for fast-type MNs, P = 1.2 × 10−5 [h, slow-type MNs]). ns, not significant. Boxes represent the interquartile range (IQR) between first and third quartiles and the line inside represents the median. Whiskers denote the lowest and highest values within 1.5 × IQR from the first and third quartiles, respectively
