Plot ERP difference waves — plot_difference • eegUtils

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

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