Simple absolute value thresholding

Source: R/artefact_rejection.R

Reject data based on a simple absolute amplitude threshold. This marks any timepoint from any electrode.

ar_thresh(data, threshold, reject = FALSE)

# S3 method for eeg_data
ar_thresh(data, threshold, reject = FALSE)

# S3 method for eeg_epochs
ar_thresh(data, threshold, reject = FALSE)

Arguments

data

An object of class eeg_data or eeg_epochs.
threshold

In microvolts. If one value is supplied, it will be treated as a +- value.
reject

If TRUE, remove marked data immediately, otherwise mark for inspection/rejection. Defaults to FALSE.

Value

An object of class eeg_data or eeg_epochs

Methods (by class)

  • eeg_data: Reject data using a simple threshold.

  • eeg_epochs: Reject data using a simple threshold.

Author

Matt Craddock matt@mattcraddock.com

Examples

ar_thresh(demo_epochs, c(100))

#> 0 (0%) samples above 100 uV threshold.
#> 0 (0%) samples below -100 uV threshold.
#> 0 epochs contain samples above threshold.
#> Epoched EEG data
#> 
#> Number of channels	: 11 
#> Number of epochs	: 80 
#> Epoch limits		: -0.197 - 0.451 seconds
#> Electrode names		: A5 A13 A21 A29 A31 B5 B6 B8 B16 B18 B26 
#> Sampling rate		: 128  Hz
#> Reference		: average