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Related Concept Videos

Somatosensation01:33

Somatosensation

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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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Design Example: Resistive Touchscreen01:14

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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.
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Tactile and Chemical Senses01:27

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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.
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Sensory Functions of the Skin01:16

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The skin is the largest organ of the human body and plays a crucial role in our sensory perception. It contains a vast network of sensory receptors that contribute to the skin's protective function by perceiving physical, biological, and environmental cues and generating relevant responses.
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Sensory Perception: Organization of the Somatosensory System01:11

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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:
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Related Experiment Video

Updated: Oct 22, 2025

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects
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Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects

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Sensing and Rendering Method of 2-Dimensional Haptic Texture.

Satoshi Saga1, Junya Kurogi2

  • 1Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan.

Sensors (Basel, Switzerland)
|August 28, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces a new method for 2-dimensional (2D) vibration displays, enhancing touchscreen realism. The novel approach improves texture rendering fidelity for randomized and large periodic textures compared to existing methods.

Keywords:
2-dimensional texturehaptics renderingimage features

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Area of Science:

  • Human-Computer Interaction
  • Haptics
  • Computer Graphics

Background:

  • Touchscreens are ubiquitous but often lack realistic haptic feedback.
  • Current haptic technologies primarily utilize one-dimensional vibration, limiting sensory immersion.
  • There is a need for advanced haptic displays that can convey complex surface information.

Purpose of the Study:

  • To develop a novel rendering method for direction-controlled 2D vibration displays.
  • To present detailed texture information using lateral-force-based X and Y-axis vibrations.
  • To enhance the fidelity of haptic texture rendering, especially for larger periodic textures.

Main Methods:

  • Proposed a rendering method for texture information utilizing lateral-force-based 2D vibration.
  • Integrated AKAZE (Accelerated-KAZE) image feature information with vibration rendering.
  • Conducted experimental evaluations to assess the fidelity of the proposed method.

Main Results:

  • The proposed method demonstrated higher fidelity in rendering randomized textures.
  • Improved presentation of large periodic textures was observed compared to conventional methods.
  • The 2D vibration display effectively conveyed nuanced texture characteristics.

Conclusions:

  • The developed rendering method significantly enhances haptic feedback realism on touchscreens.
  • Combining 2D vibration with image features offers superior texture representation.
  • This technology advances the potential for immersive and informative haptic interactions.