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Plot ERP difference waves

Source: R/plot_difference.R
plot_difference.Rd

Calculates the difference between the event-related potentials from two conditions and plots it.

Usage

plot_difference(data, ...)

# S3 method for class 'eeg_epochs'
plot_difference(
  data,
  electrode = NULL,
  time_lim = NULL,
  baseline = NULL,
  colour = NULL,
  color = NULL,
  mapping = NULL,
  conditions = "epoch_labels",
  ...
)

Arguments

data

eegUtils object. Should have multiple timepoints.

...

Other arguments passed to methods.

electrode

Electrode(s) to plot.

time_lim

Character vector. Numbers in whatever time unit is used specifying beginning and end of time-range to plot. e.g. c(-.1, .3)

baseline

Character vector. Times to use as a baseline. Takes the mean over the specified period and subtracts. e.g. c(-.1,0)

colour

Variable to colour lines by. If no variable is passed, only one line is drawn.

color

Alias for colour.

mapping

A ggplot2 aes() mapping.

conditions

Defaults to "epoch_labels".

Value

Returns a ggplot2 plot object

Methods (by class)

  • plot_difference(eeg_epochs): Plot an ERP difference wave from an eeg_epochs object

Author

Matt Craddock, matt@mattcraddock.com

Examples

plot_difference(demo_spatial, conditions = "epoch_labels", electrode = "P8")
#> Creating epochs based on combinations of variables: participant_id epoch_labels