7
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      Representation of egomotion in rat's trident and E-row whisker cortices.

      Read this article at

      ScienceOpenPublisherPubMed
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          The whisker trident, a three-whisker array on the rat's chin, has been implicated in egomotion sensing and might function as a tactile speedometer. Here we study the cortical representation of trident whiskers and E-row whiskers in barrel cortex. Neurons identified in trident cortex of anesthetized animals showed sustained velocity-sensitive responses to ground motion. In freely moving animals, about two-thirds of the units in the trident and E-row whisker cortices were tuned to locomotion speed, a larger fraction of speed-tuned cells than in the somatosensory dysgranular zone. Similarly, more units were tuned to acceleration and showed sensitivity to turning in trident and E-row whisker cortices than in the dysgranular zone. Microstimulation in locomoting animals evoked small but significant speed changes, and such changes were larger in the trident and E-row whisker representations than in the dysgranular zone. Thus, activity in trident and E-row cortices represents egomotion information and influences locomotion behavior.

          Related collections

          Author and article information

          Journal
          Nat. Neurosci.
          Nature neuroscience
          Springer Nature
          1546-1726
          1097-6256
          Oct 2016
          : 19
          : 10
          Affiliations
          [1 ] Department of Systems Neurobiology and Neural Computation, Humboldt Universität zu Berlin, Berlin, Germany.
          [2 ] Bernstein Center for Computational Neuroscience, Berlin, Germany.
          Article
          nn.4363
          10.1038/nn.4363
          27526205
          3343e002-4812-44cb-9b6f-82659638968c
          History

          Comments

          Comment on this article