Hind limb vertical ground reaction forces and sagittal-plane high-speed video were recorded during spontaneous steady-speed locomotor bouts through the central 10 cm segment of the arena.
Spontaneous animal locomotion was recorded in the arena using a Motion Scope high-speed video camera (200 Hz; Red Lake Imaging Co., Tallahassee, FL, USA), and freely chosen speeds and stride frequencies were determined for each animal from three steady-speed locomotor bouts through the central 10 cm segment of the area.
On page 215 of this issue, they report that the activity of a group of spinal-cord neurons controls the speed of locomotor behaviour in the mouse.
To identify the clinical measures associated with improved walking speed after locomotor rehabilitation in individuals poststroke and how those who respond with clinically meaningful changes in walking speed differ from those with smaller speed increases.
Compared with young w1118 flies (5 10 days), old w1118 flies (40 45 days) had an increased boundary preference during locomotion in small circular arenas, and increased speed of locomotor recovery from anoxia.
The following data analysis is less affected by swimming ability such as swim speed and locomotor activity [14].
On the basis of studies of classical inbred strains, behavioral heritability estimates were reported to be approximately 0.2 0.7 for open-field activity, wheel running, running speed and locomotor behaviors (Billat et al. 2005; Festing 1979; Lightfoot et al. 2004, 2010; Mhyre et al. 2005).
Specifically, Evx1-positive V0 interneurons are involved in contralateral coordination, En1-positive V1 interneurons regulate the speed of locomotor output, and loss of Chx10-positive V2a interneurons causes greater variability in cycle period and burst amplitude as well as a loss of left right coordination.
A lack of discontinuous changes in the pattern of speed-dependent locomotor characteristics in a hypogravity environment) is consistent with the idea of a continuous shift in the state of a given set of central pattern generators, rather than the activation of a separate set of central pattern generators for each distinct gait [ 19].
The occurrence of these differences in trailing and leading arm joint angles seem induced by the locomotor speed, both in terms of dimensionless speed as well as in the percentage of double hand contact.
Gosgnach, S. et al. V1 spinal neurons regulate the speed of vertebrate locomotor outputs.
