Skip to main content

Table 1 Comparison of coherence characteristics in sensor space and source space

From: Coherence a measure of the brain networks: past and present

Characteristics Coherence in Sensor space Coherence in Source Space
Frequency components Yes Yes
Inverse solution No Yes
Localization Inferred by indicating which electrode is active and drawing lines Specific to the local brain region that is active and indicated by colored pixels
Raw MEG/EEG recordings Yes No, Data is processed first
Field spread effects on results Yes, the current flowing across the scalp is detected by many sensors simultaneously, which leads to uncertainty in the location of the brain activity. No, since the data is first imaged into the brain. Then the coherence is calculated, provides more accurate information on which brain regions are actual coherent.