LFP is the standard abbreviation for Local Field Potential. See the full entry for Local Field Potential.
Quick Reference
Definition: Aggregate low-frequency electrical signal from a neural population, recorded intracortically or via ECoG
Frequency range: 1–300 Hz (sometimes extended to 500 Hz for high-gamma)
Key frequency bands: | Band | Frequency | BCI/Clinical Relevance | |------|-----------|----------------------| | Delta | 1-4 Hz | Sleep, anesthesia | | Theta | 4-8 Hz | Memory, navigation | | Alpha | 8-12 Hz | Idling, sensory gating | | Beta | 13-30 Hz | Motor idling; elevated in Parkinson's disease | | Gamma | 30-80 Hz | Active cortical processing | | High-gamma | 70-150 Hz | Primary BCI decoding signal in ECoG |
Clinical DBS use: Medtronic Percept PC BrainSense records subthalamic LFP to guide adaptive DBS for Parkinson's disease
Endovascular BCI: Synchron Stentrode records LFP through vessel wall — single-unit spikes cannot penetrate vessel wall
Stability advantage: LFP signals are more stable over time than single-unit spikes as electrode impedance increases with glial scar formation