Motor responses of varying intensities rely on descending commands to heterogeneous pools of motoneurons. In vertebrates, numerous sources of descending excitatory input provide systematically more drive to progressively less excitable spinal motoneurons. While this presumably facilitates simultaneous activation of motor pools, it is unclear how selective… (More)
A recent study has revealed that different populations of commissural spinal interneurons ensure limb alternation at different speeds of locomotion.
A recent study of dopaminergic neurons in the brain of larval zebrafish has important implications for interpreting the natural actions of neuromodulators in the spinal cord.
A recent study has used optogenetics to identify the source of excitatory drive for locomotion in zebrafish, revealing unexpected differences in the command signals from hindbrain to spinal cord.
A recent study suggests that animals can rely on internal expectations about their head movements, rather than vestibular sensations, to see what's in front of them.