ar_chanfoc: Detect high channel focality of ICA components

In neuroconductor/eegUtils: Utilities for Electroencephalographic (EEG) Analysis

Detect high channel focality of ICA components

Description

Detect components that load heavily on a single channel. Looks for components that have one particular channel that has a particularly high z-score.

Usage

ar_chanfoc(
  data,
  plot = TRUE,
  threshold = NULL,
  verbose = TRUE,
  measure = "max",
  ...
)

Arguments

data	eeg_ICA object
plot	Produce plot showing max z-scores and threshold for all ICA components.
threshold	Specify a threshold for high focality. NULL estimates the threshold automatically.
verbose	Print informative messages.
measure	Use maximum "max" or "kurtosis".
...	additional parameters

Value

A character vector of component names that break the threshold.

Author(s)

Matt Craddock [e-mail]

References

Chaumon, M., Bishop, D.V., Busch, N.A. (2015). A practical guide to the selection of independent components of the electroencephalogram for artifact correction. J Neurosci Methods. Jul 30;250:47-63. doi: 10.1016/j.jneumeth.2015.02.025

Examples

demo_sobi <- run_ICA(demo_epochs, pca = 10)
ar_chanfoc(demo_sobi)

neuroconductor/eegUtils documentation built on Feb. 3, 2023, 5:33 p.m.