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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.
Tactile and Chemical Senses01:27

Tactile and Chemical Senses

Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex. This...
Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...
Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the stimulus...
Responses to Gravity and Touch02:26

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Gravitropism: Plant Responses to Gravity
Overview of Somatic Sensory Pathways01:29

Overview of Somatic Sensory Pathways

Somatic sensory or somatosensory pathways refer to the neural pathways that carry information related to touch, pressure, pain, temperature, and proprioception from the skin, muscles, tendons, and joints to the brain. These pathways involve several stages of processing and integration of sensory information.
The somatosensory system is divided into three main pathways: the dorsal (or posterior) column-medial lemniscus, spinothalamic (or anterolateral), and spinocerebellar pathways.
The dorsal...

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Related Experiment Video

Updated: Jun 11, 2026

Testing Tactile Masking between the Forearms
08:05

Testing Tactile Masking between the Forearms

Published on: February 10, 2016

Tactile remapping beyond space.

Elena Azañón1, Karla Camacho, Salvador Soto-Faraco

  • 1Departament de Psicologia Bàsica, Universitat de Barcelona, Passeig de la Vall d'Hebron, 171, 08035 Barcelona, Spain. eazanon@ub.edu

The European Journal of Neuroscience
|June 30, 2010
PubMed
Summary
This summary is machine-generated.

Tactile remapping, the brain

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Related Experiment Videos

Last Updated: Jun 11, 2026

Testing Tactile Masking between the Forearms
08:05

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Published on: February 10, 2016

Tactile Semiautomatic Passive-Finger Angle Stimulator (TSPAS)
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Published on: July 30, 2020

A Tactile Automated Passive-Finger Stimulator (TAPS)
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Published on: June 3, 2009

Area of Science:

  • Neuroscience
  • Somatosensory system
  • Human perception

Background:

  • Tactile perception typically relies on somatotopic maps.
  • External reference frames are increasingly recognized for tactile encoding.
  • Automaticity of tactile remapping is debated, particularly regarding spatial task demands.

Purpose of the Study:

  • To investigate whether spatial task demands are necessary to trigger tactile remapping.
  • To examine tactile remapping across different body postures.
  • To test the automaticity hypothesis of tactile remapping.

Main Methods:

  • Three experiments progressively reduced spatial task demands.
  • Tactile remapping was assessed by modulating visual performance (speeded color judgments).
  • Responses were made using foot pedals or verbally, with crossed and uncrossed hand postures.

Main Results:

  • Tactile remapping occurred regardless of hand posture (Experiment 1).
  • External cueing effects persisted even when spatial task demands were minimized (Experiment 2).
  • Spatial congruency influenced visual performance even with fixed cue/target positions (Experiment 3).

Conclusions:

  • Engaging in explicit spatial tasks is not required for tactile remapping.
  • These findings support the automaticity of tactile remapping.
  • Touch is automatically remapped into external coordinates irrespective of body posture.