IeegBipolarPair

Namespace: IEEGLIB  ·  Library: iEEG Library

#include <ieeg/ieeg_reference.h>

struct IEEGLIB::IeegBipolarPair

One bipolar derivation: anode minus cathode.

src/examples/ex_ieeg/main.cpp

const QVector<IeegBipolarPair> pairs = IeegReference::bipolarPairs(implantation); // LA1-LA2, LA2-LA3
Eigen::MatrixXd data(3, 1);                                                       // contacts x samples, file order
data << 30.0, 10.0, 15.0;                                                         // LA3, LA1, LA2
const Eigen::MatrixXd bipolar = IeegReference::bipolarMatrix(pairs, int(contacts.size())) * data;

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Example

• Full source: src/examples/ex_ieeg/main.cpp
• Build target: ex_ieeg (runs under CTest)

Used in examples

ex_ieeg

IEEG library: group sEEG contacts into a lead, derive a bipolar montage and paint contact values onto a surface.

src/examples/ex_ieeg/main.cpp, line 80

const QVector<IeegBipolarPair> pairs = IeegReference::bipolarPairs(implantation); // LA1-LA2, LA2-LA3
Eigen::MatrixXd data(3, 1);                                                       // contacts x samples, file order
data << 30.0, 10.0, 15.0;                                                         // LA3, LA1, LA2
const Eigen::MatrixXd bipolar = IeegReference::bipolarMatrix(pairs, int(contacts.size())) * data;
ok &= expect(pairs.size() == 2 && pairs[0].name == "LA1-LA2" && bipolar(0, 0) == -5.0 && bipolar(1, 0) == -15.0,
             "IeegReference: LA1-LA2 = -5, LA2-LA3 = -15");

Authors of this file

• Christoph Dinh <christoph.dinh@mne-cpp.org>