eegcoord: EEG Cap Coordinates

In eegkit: Toolkit for Electroencephalography Data

EEG Cap Coordinates

Description

Three-dimensional electroencephalography (EEG) electrode coordinates (measured in cm), and corresponding projection onto two-dimensional xy plane. Contains 84 scalp electrodes, as well as nose and ears.

Usage

data(eegcoord)

Format

A data frame with 87 observations and the following 5 variables:

x

x-coordinate of 3d cap (numeric).

y

y-coordinate of 3d cap (numeric).

z

z-coordinate of 3d cap (numeric).

xproj

Projected x-coordinate of 2d cap (numeric).

yproj

Projected y-coordinate of 2d cap (numeric).

Electrode channel name labels can be obtained using rownames(eegcoord).

Author(s)

Nathaniel E. Helwig <[e-mail]>

Source

Created by Nathaniel E. Helwig (2014) using:

Murdoch, D., and Adler, D. (2025). rgl: 3D Visualization Using OpenGL. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.32614/CRAN.package.rgl")}, R package version 1.3.18, http://CRAN.R-project.org/package=rgl

Oostenveld, R., and Praamstra, P. (2001). The Five percent electrode system for high-resolution EEG and ERP measurements. Clinical Neurophysiology, 112, 713-719. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1016/S1388-2457(00)00527-7")}

Schlager S (2017). Morpho and Rvcg - Shape Analysis in R. In Zheng G, Li S, Szekely G (eds.), Statistical Shape and Deformation Analysis, 217-256. Academic Press. ISBN 9780128104934.

Examples

##########   EXAMPLE   ##########

data(eegcoord)
enames <- rownames(eegcoord)
# plot3d(eegcoord[,1],eegcoord[,2],eegcoord[,3],size=10,col="green")
# text3d(eegcoord[,1],eegcoord[,2],eegcoord[,3],texts=enames,col="blue")
plot(eegcoord[,4],eegcoord[,5],cex=2,col="green",pch=19)
text(eegcoord[,4],eegcoord[,5],labels=enames,col="blue")

eegkit documentation built on April 16, 2025, 1:09 a.m.