Neuronal membrane capacitance

Neuronal membrane capacitance is a physical property derived from the electrical properties of the neuronal plasma membrane, specifically the lipid bilayer. It quantifies the membrane’s ability to store and separate electrical charge across its insulating barrier, typically measured in Farads. In neurons, this capacitance plays a crucial role in determining how quickly the membrane potential changes in response to incoming electrical currents, as it contributes to the neuronal membrane time constant (τ = Rm × Cm, where Rm is membrane resistance and Cm is membrane capacitance). The total capacitance generally scales with cell surface area and is affected by cell morphology and development. Capacitance is important for synaptic integration, the filtering of voltage signals, and sets limits on neuronal firing rates and the speed of action potential propagation. Neuronal membrane capacitance is not a protein, receptor, channel, or enzyme, but a general property arising from the membrane’s physical structure. Key references: - Not a druggable target or discrete molecular entity, but a measured biophysical property. - Recent research shows membrane capacitance can undergo physiological changes (e.g., daily oscillations), suggesting it may be dynamically regulated under certain conditions, but it is not considered a canonical therapeutic target. If you need structured data, this information supports the following: - neuronal membrane capacitance is not a specific, druggable molecular target, but a general physical property of all biological membranes—thus, "is_incorrect: true" for conventional drug/target databases.

Other names

Membrane capacitanceInput capacitance (context-dependent)Specific membrane capacitance (if referring to capacitance per unit area)