For example, we feel putting on clothes, but then very quickly, aren’t aware of that sensation anymore. Similarly, when you encounter a smell, the sensation begins to diminish. While I am glad that I become less aware of a foul smell, why does this happen? Would it not be safer to remain aware of bad smells so that you remain deterred from bad food or potential disease exposure? At the same time, does this happen with other senses like hearing? I remain constantly aware of the noise of my fan if I leave it on, so if that sense doesn’t diminish, why is that?
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There is a term call **synaptic fatigue.**
In short our senses depend on the neuron receptors, their connections to our brain and the neurotransmitters they use to communicate with each other. The receptor might deplete all their neurotransmitter to a stimulation that is constant and of the same intensity. So that way the signal that reaches the brain is lower and you feel less that stimulation.
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