Chloride ions play a critical inhibitory role in the nervous system by establishing and maintaining the hyperpolarizing inhibitory potentials mediated by neurotransmitters such as GABA and glycine.
The retrieved literature consistently supports the claim that chloride ions are essential for neuronal inhibition, operating primarily through chloride-permeable channels activated by inhibitory neurotransmitters like GABA. Papers 1, 4, and 9 all directly describe this mechanism. No retrieved papers refute the inhibitory function of chloride ions in neurons.