How is the topo / scalp map from an EEG Signal with ICA created?

1. How does ICA work EEG?
2. What is topographic mapping EEG?
3. What is scalp map?
4. What does a topographic map show?

How does ICA work EEG?

Independent component analysis (ICA) is known as a blind-source separation technique. It attempts to extract underlying signals that, when combined, produce the resulting EEG. It operates on the assumption that there are underlying signals that are linearly mixed to produce the EEG.

What is topographic mapping EEG?

Topographic EEG analysis includes different techniques to display the spatial distribution of brain electrical activity. The correct reconstruction of the scalp potentials and the consequent inference on cortical generators is influenced by many factors.

What is scalp map?

A scalp topographic map for an EEG may be a superposition of several simpler subtopographic maps, each resulting from an individual electrical source located at a certain depth.

What does a topographic map show?

A topographic map is a detailed and accurate illustration of man-made and natural features on the ground such as roads, railways, power transmission lines, contours, elevations, rivers, lakes and geographical names. The topographic map is a two-dimensional representation of the Earth's three-dimensional landscape.