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What happens to the pain signal in the spinal cord?

The spinal cord acts as a filter for pain messages going to the brain. It can amplify or mute the signal, depending on how important it 'thinks' it will be to transmit the message. Specifically, it will tend to filter out weak or repetitive signals and amplify sudden ones. Consequently, the brain will be able to ignore - to some degree - an unavoidable pain stimulus and react immediately to something like fire.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.