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. |