What are the differences and similarities between EEG and local field potential (LFP)? In some literature, hippocampal EEG was recorded with electrodes implanted in the hippocampus in mice or rats. However, in this case, are signals recorded by electrodes should be called LFP rather that EEG? So what are the differences and similarities between EEG and local field potential (LFP)? How to understand the two concepts correctly?
Hi,
A LFP is a generic term which refers to any kind of electrophysiological activity recorded near the generator. So, cortical activity recorded on the scalp is indeed a LFP, and so is intracranial recording of the hippocampus, but EEG is a more specific term.
Hi
Support the previous investigator's response and recommend a classic review(DOI:10.1038/nrn3241).
Both EEG and LFP measure the brain's electrical activity. However, EEG is non-invasive and records from the entire brain but has a lower spatial resolution. LFP is invasive, localised, and has a higher spatial resolution. In your specific case, recordings from electrodes implanted in the hippocampus of mice or rats would be more accurately described as LFPs due to their localised nature and invasive recording method.
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