Velocidade condução neurônio
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The neuron conduction speed calculator estimates how fast an action potential travels along an axon, based on the axon's diameter (d, in micrometers). The formula used is v ≈ 6·d, where 'v' is the average speed in meters per second. This tool is useful in neuroscience studies, particularly to compare conduction speeds between myelinated and unmyelinated neurons.
To use the calculator, input the axon diameter in micrometers. The result shows the estimated speed. For instance, a 5-μm axon would have a speed of 30 m/s. The formula is derived from empirical biology studies and may vary depending on species and physiological conditions.
This tool is applied in biomedical research, such as analyzing diseases affecting myelin, or in education to teach about the relationship between nerve structure and function. Note that factors like temperature, voltage, and tissue condition also influence the actual speed.
Frequently asked questions
Why does the formula use 6 as a constant?
The 6 is an empirical constant derived from experimental studies correlating axon diameter with conduction speed across species.
Does this work for all neuron types?
No. The formula applies mainly to unmyelinated neurons. Myelinated neurons have much higher speeds and require different calculations.
Why does diameter affect speed?
Larger axons have lower electrical resistance, allowing faster signal propagation, similar to how thicker wires conduct electricity better.
How accurate is this estimation?
The approximation is useful for general studies, but actual speeds can vary ±20% depending on factors like temperature and physiological state.