ArticleJournal of neurophysiology2017
Musculoskeletal geometry accounts for apparent extrinsic representation of paw position in dorsal spinocerebellar tract.
Article in Journal of neurophysiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 13 citations in OpenAlex.
- Peripersonal encoding of forelimb proprioception in the mouse somatosensory cortex.Nature communications · 2023Article
- Control of Mammalian Locomotion by Somatosensory Feedback.Comprehensive Physiology · 2021Article
- Article
- Highlights from the 28th Annual Meeting of the Society for the Neural Control of Movement.Journal of neurophysiology · 2018Article
- Cerebellar compartments for the processing of kinematic and kinetic information related to hindlimb stepping.Experimental brain research · 2017Article
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Authors and funding
3 authors at 1 institution in 1 country.
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Abstract
Proprioception, the sense of limb position and motion, arises from individual muscle receptors. An important question is how and where in the neuroaxis our high level "extrinsic" sense of limb movement originates. In the 1990s, a series of papers detailed the properties of neurons in the dorsal spinocerebellar tract (DSCT) of the cat. Despite their direct projections from sensory receptors, it appeared that half of these neurons had consistent, high-level tuning to paw position rather than to joint angles (or muscle lengths). These results suggested that many DSCT neurons compute paw position from lower level sensory information. We examined the contribution of musculoskeletal geometry to this apparent extrinsic representation by simulating a three-joint hindlimb with mono- and biarticular muscles, each providing a muscle spindlelike signal, modulated by the muscle length. We simulated neurons driven by randomly weighted combinations of these signals and moved the paw to different positions under two joint-covariance conditions similar to the original experiments. Our results paralleled those experiments in a number of respects:
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