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Related Concept Videos

Somatosensation01:33

Somatosensation

The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
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Related Experiment Video

Updated: May 18, 2026

Measuring Changes in Tactile Sensitivity in the Hind Paw of Mice Using an Electronic von Frey Apparatus
07:49

Measuring Changes in Tactile Sensitivity in the Hind Paw of Mice Using an Electronic von Frey Apparatus

Published on: December 19, 2013

Fast feedback in active sensing: touch-induced changes to whisker-object interaction.

Dudi Deutsch1, Maciej Pietr, Per Magne Knutsen

  • 1Department of Neurobiology, The Weizmann Institute of Science, Rehovot, Israel.

Plos One
|October 3, 2012
PubMed
Summary
This summary is machine-generated.

Rats exhibit "touch-induced pumps" (TIPs) in their whisker movements when touching objects. These complex, multi-timescale motor modulations directly impact how rats explore and interact with their environment through touch.

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Related Experiment Videos

Last Updated: May 18, 2026

Measuring Changes in Tactile Sensitivity in the Hind Paw of Mice Using an Electronic von Frey Apparatus
07:49

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Published on: December 19, 2013

Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback
05:43

Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback

Published on: May 23, 2019

Area of Science:

  • Neuroscience
  • Sensory Biology
  • Animal Behavior

Background:

  • Whisking-mediated touch is an active sensory process.
  • Whisker movements are influenced by sensory feedback and behavioral context.

Purpose of the Study:

  • To investigate the effects of object contact on whisking behavior in head-fixed rats.
  • To analyze how sensory input modulates whisker movements at different timescales.

Main Methods:

  • Simultaneous tracking of whisker movements (C1, C2, D1) bilaterally.
  • Comparison of whisking patterns during free-air movement versus object contact.
  • Analysis of acceleration-deceleration events, amplitude, velocity, and duration.

Main Results:

  • Object contact induced a second acceleration-deceleration event ('touch-induced pumps') in 25% of whisk cycles.
  • These pumps involved both contacting and non-contacting whiskers, prolonging object contact duration.
  • Slower timescale modulations included increased contralateral whisker amplitude and decreased ipsilateral amplitude post-contact.

Conclusions:

  • Sensory-induced motor modulations in whisking occur across multiple timescales.
  • These modulations directly influence the process of object palpation.
  • The findings reveal sophisticated active sensing mechanisms in rodents.