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Related Concept Videos

Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

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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.
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...
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Somatosensory, Motor, and Association Cortex01:23

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The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
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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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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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Association Areas of the Cortex01:21

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Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
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The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
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Related Experiment Video

Updated: Feb 17, 2026

Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping
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Flexible Visuomotor Associations in Touchscreen Control.

Sara Fabbri1, Luc P J Selen1, Robert J van Beers1,2

  • 1Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, Netherlands.

Frontiers in Human Neuroscience
|December 6, 2017
PubMed
Summary
This summary is machine-generated.

When interacting with virtual objects on screens, people do not touch the object directly but maintain a distance when initiating a swipe. This visuomotor behavior adapts based on movement distance and object proximity.

Keywords:
principal component analysis (PCA)reachingspatial mismatch touchscreen controlswipingvisuomotor associations

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Area of Science:

  • Human-computer interaction
  • Cognitive neuroscience
  • Robotics

Background:

  • Moving real objects requires direct physical contact.
  • Interacting with virtual objects, such as via tablet swipes, bypasses direct physical contact.
  • Understanding the visuomotor strategies for virtual object manipulation is crucial for intuitive interface design.

Purpose of the Study:

  • To investigate the behavioral strategies underlying swipe movements for virtual object displacement.
  • To examine how visual information is mapped into swipe actions to move virtual objects to a goal location.
  • To identify factors influencing the initial placement of a finger for virtual object interaction.

Main Methods:

  • Two experiments were conducted to study swipe movement strategies.
  • Experiment 1 examined swiping behavior based on object location relative to the swiping workspace.
  • Experiment 2 manipulated initial hand location, object location, and goal location to determine mismatch factors, using dimensionality reduction.

Main Results:

  • Participants consistently maintained a systematic distance between the object and their initial swipe location, unlike real-world object manipulation.
  • This 'mismatch' occurred regardless of whether the object was within or outside the defined swiping workspace.
  • Three key factors influenced initial swipe location: expected total movement distance, finger-to-object distance, and a preference to avoid covering the object.

Conclusions:

  • Visuomotor associations demonstrate significant flexibility in virtual environments.
  • Individuals adapt their swipe strategies based on a combination of movement dynamics and spatial preferences.
  • These findings provide novel insights into the adaptive nature of human-computer interaction and motor control in virtual spaces.