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Related Experiment Video

Updated: Jul 10, 2025

Simultaneous Recording of Electroretinography and Visual Evoked Potentials in Anesthetized Rats
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VEPdgets: Towards Richer Interaction Elements Based on Visually Evoked Potentials.

Philipp Wolf1, Timo Götzelmann1

  • 1Nuremberg Institute of Technology, Chair of Ambient Intelligence, D-90489 Nuremberg, Germany.

Sensors (Basel, Switzerland)
|November 25, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces a novel brain-computer interface (BCI) method using visually evoked potentials (VEP). The VEP latency reliably controls numerical input via VEP widgets in desktop and VR settings.

Keywords:
BCIHCIVEPVEP-widgetbrain–computer interfacecontrol elementscontrolsinteractioninteraction elementswidgets

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Related Experiment Videos

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Area of Science:

  • Neuroscience
  • Human-Computer Interaction
  • Biomedical Engineering

Background:

  • Current brain-computer interfaces (BCIs) often use visual evoked potentials (VEP) solely as triggers or in conjunction with other technologies.
  • A gap exists in leveraging the temporal dynamics of VEPs for nuanced control within BCIs.

Purpose of the Study:

  • To demonstrate that the latency of losing visually evoked potentials (VEP) after stimulus offset is a reliable temporal parameter for BCI control.
  • To introduce and evaluate VEP interaction elements (VEP widgets) for numerical value input using this VEP temporal control method.

Main Methods:

  • Developed VEP widgets for numerical input based on VEP latency correction.
  • Conducted user studies in both desktop and virtual reality (VR) environments to assess the VEP widget performance.
  • Analyzed the reliability and accuracy of value input using the proposed VEP-based temporal control.

Main Results:

  • The temporal control approach using VEP latency correction was successfully applied to input values using VEP widgets in both desktop and VR settings.
  • Users were able to input numerical values, although accuracy was limited under untrained conditions.
  • The VEP widget concept demonstrated feasibility for value input via VEP technology.

Conclusions:

  • The latency of VEPs provides a reliable temporal parameter for controlling time-varying variables in BCIs.
  • VEP widgets offer a novel, VEP-only method for numerical value input, applicable across different interaction environments.
  • The proposed latency correction technique for VEP widgets has broader potential applications beyond numerical input.