[Solved] Which liberty-limiting principle would address the problem of pornography, harm to women, and freedom of speech? Brain's Release: The process of neurotransmitters being released by neurons in the brain to communicate with each other, influencing mood and behavior. Endorphins: Natural pain-relieving chemicals produced by the brain in response to stress or discomfort. Nociceptors: Sensory receptors found throughout the body that respond to potentially damaging stimuli by sending signals to the spinal cord and brain, perceived as pain. Sensory Receptors: Specialized cells or nerve endings that respond to changes in the environment by generating electrical signals.