Multiple Color Stimulus Induced Steady State Visual Evoked Potentials

Abstract

Steady state visual evoked potentials (SSVEP) are of the characteristics of high SNR and effectiveness in short-term identification of evoked responses. In most of the SSVEP experiments, single high frequency stimuli are used. To characterize the complex rhythms in SSVEP, a new multiple color stimulus pattern is proposed in this paper FFT and bispectrum analysis methods are used to detect the phase coupling of the two stimulation frequencies in the recorded SSVEP. The results show that the rhythms at the duplation, sum or difference of the two stimulation frequencies can be evoked by multiple color stimulus.

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Document Details

Document Type
Technical Report
Publication Date
Oct 25, 2001
Accession Number
ADA411770

Entities

People

  • Duanyang Xu
  • Mingxi Cheng
  • Si Gao
  • Xiangyu Gao

Organizations

  • Tsinghua University

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Abstracts
  • Background Noise
  • Biological Sciences
  • Biology
  • Biomedical Engineering
  • Brain-Computer Interfaces
  • Couplings
  • Detection
  • Electrical Engineering
  • Electrophysiological Phenomena
  • Engineering
  • Frequency
  • Frequency Domain
  • Phase
  • Phase Distortion
  • Repetition Rate
  • Steady State

Readers

  • Radio communications and signal processing.
  • Vision Science/Vision Psychology/Cognitive Neuroscience.