erp_scalp: Plot event-related potentials using a scalp based layout

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

Plot event-related potentials using a scalp based layout

Description

Creates a ggplot2 figure showing the ERP at each electrode, with each electrode placed according to its location on the scalp.

Usage

erp_scalp(data, ...)

## Default S3 method:
erp_scalp(
  data,
  electrode = "electrode",
  amplitude = "amplitude",
  time = "time",
  color = NULL,
  colour = NULL,
  size = 0.8,
  linewidth = 0.8,
  baseline = NULL,
  show_guide = TRUE,
  chan_info = NULL,
  montage = NULL,
  ...
)

Arguments

data	An eeg_epochs or eeg_evoked object
...	Various arguments passed to specific functions
electrode	Column name containing electrode names in data. Defaults to "electrode".
amplitude	Column name containing amplitudes in data. Defaults to "amplitude".
time	Column name containing time in data. Defaults to "time".
color	Alias for colour.
colour	Variable to colour lines by. If no variable is passed, only one line is drawn for each electrode.
size	Size of the line(s) for the ERPs. Deprecated
linewidth	Size of the line(s) for the ERPs.
baseline	Character vector of times to subtract for baseline correct.
show_guide	Should be a guide showing the scale of the ERP plots be shown. Defaults to TRUE.
chan_info	Pass channel information in the standard eegUtils format directly.
montage	Name of an existing montage set. Defaults to NULL, which will attempt to us locations from the data. If none are found, it will attempt to use standard 10-05 locations.

Value

Returns a ggplot2 plot object.

Methods (by class)

• erp_scalp(default): Plot an ERP scalp map

Author(s)

Matti Vuorre, [e-mail]

Matt Craddock, [e-mail]

See Also

interactive_scalp() for interactive plots of ERPs in a scalp-based layout.

Other scalp-based maps: interactive_scalp(), topoplot()

Examples

erp_scalp(demo_epochs, montage = "biosemi64alpha")

craddm/eegUtils documentation built on March 1, 2025, 3:23 p.m.