Event-related potentials (ERP) analysis, graphics and utility functions


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Documentation for package ‘erpR’ version 0.2.0

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erpR-package erpR package
butterfly ERP butterfly plot
char2fac convert characters to factors
check.erplist check consistency of an erplist
cn display column names
create.diff create an ERP data frame with differential values
create.mean create ERP data frames with mean values from a series of data frames contained in an erplist.
create.roi create electrode region of interests
erp plot an ERP waveform
erp.add add an ERP waveform to a plot
erp.cor plot the timepoint correlations between ERPs (single electrode) and an external variable
erp.infl inspect the influence of a subject on the average (single electrode).
erp.latency calculate latency of several ERP data frames on a given time window
erp.mean Calculate the mean of several ERP data frames in a given time window
erp.peak calculate the peak of several ERP data frames in a given time window
erp.t plot t-test comparisons at all timepoints between two sets of ERP data frames (single electrode)
erp.xaxis Draw an erp x axis
erp.yaxis Draw an erp y axis
erpR erpR package
ERPsets list of ERP data frames
factorall Factorize one or more variables in a data frame
grandaverage calculate the grandaverage of ERP data frames for graphical purposes
import.erp import ERP data matrices from ASCII files (file extension should be specified). Data are imported as a list containing a data frame for each files imported.
localmax calculate a local maximum
localmin calculate a local minimum
msectopoints convert points in milliseconds
named.agg aggregate and keep the original names
pointstomsec convert points in milliseconds
rearrange rearrange a data frame from wide to long format
scalp plot ERP waveforms in a scalp array
scalp.cor plot the timepoint correlations between ERPs and an external variable (scalp array)
scalp.infl inspect the influence of a subject on an average (scalp array)
scalp.t plot t-test comparisons at all timepoints between two ERP set of data frames (scalp array)
topoplot plot a topographic map of ERP
topoplot.palette Add a palette to a plot
tpairs calculate pairwise t-tests