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Related Concept Videos

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...
Sensory Modalities01:15

Sensory Modalities

Sensation typically is the process by which the sensory receptors and sense organs detect stimuli from the internal and external environment and transmit this information to the central nervous system for processing.
General senses refer to the broad category of sensory information detected by receptors in the body and can be further grouped into somatic and visceral senses. Somatic sensations include touch, pressure, temperature, and pain and are essential for navigating our environment and...

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Related Experiment Video

Updated: Jun 19, 2026

A Tactile Automated Passive-Finger Stimulator (TAPS)
19:44

A Tactile Automated Passive-Finger Stimulator (TAPS)

Published on: June 3, 2009

A tactile stimulator for studying passive shape perception.

John W Lane1, Paul J Fitzgerald, Jeffrey M Yau

  • 1Zanvyl Krieger Mind/Brain Institute, Department of Neuroscience, Johns Hopkins University, 3400 N Charles St, Baltimore, MD 21218, USA.

Journal of Neuroscience Methods
|October 6, 2009
PubMed
Summary
This summary is machine-generated.

We developed a versatile computer-controlled tactile stimulator for studying 3D shape perception in humans and monkeys. This device precisely controls tactile stimuli and hand shape, enabling detailed analysis of touch and proprioception.

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Related Experiment Videos

Last Updated: Jun 19, 2026

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Human-Computer Interaction

Background:

  • Understanding 3D shape perception is crucial for robotics and prosthetics.
  • Current methods for tactile stimulation lack precision in controlling both stimulus and hand conformation.

Purpose of the Study:

  • To introduce a novel computer-controlled tactile stimulator for psychophysical and neurophysiological research.
  • To enable parametric studies of mechanoreceptive and proprioceptive contributions to tactile shape perception.

Main Methods:

  • Constructed a two-component system: a tactile stimulator and a hand positioner.
  • Tactile component uses servo-controlled motors for vibration, indentation, or scanning stimuli.
  • Hand positioner motorizes mechanical linkages to control finger spread and flexion/extension.

Main Results:

  • The stimulator allows for arbitrary stimulus shapes and precise control over hand conformation.
  • Independent control of tactile and hand positioning components facilitates parametric analysis.
  • The system is built from accessible commercial and custom parts.

Conclusions:

  • This tactile stimulator provides a flexible platform for investigating 3D tactile shape perception.
  • It enables detailed investigation into the roles of touch and proprioception in object recognition.
  • The design is adaptable for various experimental needs in neuroscience and psychophysics.