local field potential
Also written as: LFP — local field potential
Extracellular electrical signal reflecting synchronized synaptic activity in a local neural population.
Full Definition
Local field potentials (LFPs) are extracellular electrical recordings that capture the collective synaptic activity of neural populations within a small volume of tissue. These signals primarily reflect synchronized postsynaptic potentials rather than action potentials, providing insight into local circuit dynamics and oscillatory activity. LFPs are commonly used in both research and clinical settings, including brain-computer interfaces, epilepsy monitoring, and deep brain stimulation procedures. The frequency content of LFPs can reveal different aspects of neural processing, from slow cortical potentials to high-frequency gamma activity.
Usage
Usage note: Commonly abbreviated as LFP; distinguish from single-unit recordings which capture individual neuron spikes.
In Context
- "Local field potential recordings showed increased theta power during spatial navigation tasks." — Electrophysiology study
- "The implanted electrodes monitored local field potentials for seizure prediction algorithms." — Clinical device report