Why do some noises produce a physical reaction in people?

Question

When I hear scratching on a blackboard or polystyrene it gives me chills. Why does this happen?

In: Biology

Answer 1

the human brain consists of neuron which make connections based on which signals were processed by them under which circumstances.

what this means is that your brain develops neuron patterns which show specific behaviors to specific signals. That’s the simplest explanation we have for how memories, behavior patterns (or reflexes, but those are mostly not controlled by the brain) work.

In some circumstances, these neuron patterns can become very large and potent, and they can also invoke direct responses to specific sensations.