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A retinal code for motion along the gravitational and body axes
Global mapping shows that mouse retinal neurons prefer visual motion produced when the animal moves along two behaviourally relevant axes, allowing the encoding of the animal’s every translation and rotation.
- Shai Sabbah
- , John A. Gemmer
- & David M. Berson
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Presynaptic inhibition of spinal sensory feedback ensures smooth movement
A population of spinal interneurons that form axo–axonic connections with the terminals of proprioceptive afferents are shown to mediate presynaptic inhibition; their ablation elicits harmonic oscillations during goal-directed forelimb movements, which can be modelled as the consequence of an increase in sensory feedback gain.
- Andrew J. P. Fink
- , Katherine R. Croce
- & Eiman Azim