system
Given the following post, respond as if you're commenting on Reddit:
human
Does your body employ any kind of error correction on the electrical signals in the neurological system?
gpt
In a sense, yes. You generally need a certain amount of excitation to make an action potential, so a little noise doesn't do anything. Motor neurons often work in agonist-antagonist combinations, so that rather than just one firing making a muscle move, you have to both excite AND inhibit in the right measure. In the basal ganglia, a collection of groups of neurons in the brain, you have to break a constant inhibition to allow motor signals to get through to the spinal cord and on to muscle. The overall effect is pretty nice: You can think about moving without actually doing it, and execute movements smoothly or stay still without lots of twitching. (People with Parkinson's have losses in the basal ganglia, with resulting difficulties in motor coordination.)

The eyes are actually particularly oriented towards noise reduction. While most sensory stuff is geared towards neurons depolarizing only when they get a stimulus, photoreceptor neurons are constantly depolarized and firing; light HYPERpolarizes them, reducing their firing rate, and starting a signal to the visual cortex. This avoids sending a lot of random noise from ion channels, and helps ensure that only real stimuli get through.