erp_image: Plot ERP images

In kusumikakd/EEG: A collection of utilities for EEG analysis

Description

Plot an ERP image from a single electrode. Smooths over a series of trials in order to make across-trial patterns more apparent.

Usage

erp_image(data, ...)

## Default S3 method:
erp_image(
  data,
  electrode = "Cz",
  time_lim = NULL,
  smoothing = 10,
  clim = NULL,
  interpolate = FALSE,
  ...
)

## S3 method for class 'eeg_epochs'
erp_image(
  data,
  electrode = "Cz",
  time_lim = NULL,
  smoothing = 10,
  clim = NULL,
  interpolate = FALSE,
  ...
)

## S3 method for class 'eeg_ICA'
erp_image(
  data,
  component = "Comp1",
  smoothing = 10,
  clim = NULL,
  interpolate = FALSE,
  ...
)

Arguments

data	Data frame to be plotted. Requires an amplitude column.
...	Other arguments passed to the method.
electrode	electrode at which to generate an ERP image.
time_lim	Time limits of plot
smoothing	Number of trials to smooth over when generating image
clim	Character vector of min and max values of plotting colour range. e.g. c(-5,5). Defaults to min and max.
interpolate	Perform interpolation to produce smoother looking plots. Defaults to FALSE.
component	eeg_ICA component to plot

Methods (by class)

• default: Default function operates on normal data frames

• eeg_epochs: Create an erp_image from eeg_epochs

• eeg_ICA: Plot component image from eeg_ICA

Examples

erp_image(demo_epochs, electrode = "A31")
erp_image(demo_epochs, electrode = "A31", interpolate = TRUE)
erp_image(demo_epochs, electrode = "A31", smoothing = 5)

kusumikakd/EEG documentation built on June 28, 2020, 12:30 a.m.