Locked to stimulation: Significance level of the phase-locking factor

Takefumi Ueno, Shogo Hirano, Yoji Hirano, Shigenobu Kanba, Shinji Kobayashi, Toshiaki Onitsuka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Background: Recent neurophysiological studies have evaluated neural synchronization using wavelet transformation and the phase-locking factor (PLF). However, mathematical details of PLF and statistical processes to examine the significance of PLF have remained unclear. The present report discusses the significance level of PLF. Methods: Mathematization of PLF was performed, and results for PLF simulation were obtained, using a program for retrieving randomized samples from complex numbers within a complex unit circle in MATLAB software. Results: For PLF mean and variance, a simulated curve was fitted to the theoretical curve. Computer simulation might show that we need 100 data points and 10 subjects to use Rayleigh distribution. Conclusions: The present report demonstrates the significance level of PLF and the amount of the samples. This report may provide an additional potential application for the assessment of how neural activities are locked to stimulation, for example, to selection of the channel of magnetoencephalography study.

Original languageEnglish
Title of host publicationProceedings of the 2009 2nd International Congress on Image and Signal Processing, CISP'09
DOIs
Publication statusPublished - 2009
Event2009 2nd International Congress on Image and Signal Processing, CISP'09 - Tianjin, China
Duration: Oct 17 2009Oct 19 2009

Publication series

NameProceedings of the 2009 2nd International Congress on Image and Signal Processing, CISP'09

Other

Other2009 2nd International Congress on Image and Signal Processing, CISP'09
Country/TerritoryChina
CityTianjin
Period10/17/0910/19/09

All Science Journal Classification (ASJC) codes

  • Computer Vision and Pattern Recognition
  • Signal Processing
  • Biomedical Engineering

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