Review on the current long-term, limited lead electroencephalograms

Area of Science:

• Neuroscience
• Biomedical Engineering
• Medical Technology

Background:

• The 10-20 system has been the standard for electroencephalography (EEG) recordings for decades, ensuring study comparability.
• Emerging advanced EEG sensors in compact units present opportunities to improve ambulatory EEG practices.
• Novel sensor technologies, including embedded electrodes, are expanding EEG capabilities.

Purpose of the Study:

• To provide an overview of current limited sensor long-term EEG systems.
• To review the literature on advanced ambulatory EEG recording technologies.
• To assess the potential and limitations of novel EEG sensor systems.

Main Methods:

• A literature review was conducted using the PubMed database.
• Relevant articles on limited sensor long-term EEG systems were identified and included.
• The review focused on systems for ambulatory and home-based EEG recordings.

Main Results:

• Several long-term ambulatory EEG systems were identified, offering good sensitivity and low false detection rates for seizure detection and forecasting.
• Minimally invasive subcutaneous, subgaleal, and subscalp electrodes provide stable, ultra-long-term EEG signals but have limited spatial coverage and require surgery.
• Behind-the-ear and headband electrodes offer discrete, patient-friendly options with varying degrees of sensitivity and susceptibility to artifacts.

Conclusions:

• Limited EEG recording systems represent a promising advancement for targeted, prolonged EEG monitoring.
• These systems are generally well-tolerated and effective in ambulatory and home settings.
• Further validation studies are necessary to fully establish the clinical utility of these novel EEG technologies.