Final answer:
Several treatment techniques can sedate the nervous system, including the use of psychoactive drugs like depressants, relaxation response techniques, biofeedback, and clinical hypnosis which reduce sympathetic arousal and stress.
Step-by-step explanation:
Sedating the nervous system is a reflexive effect of several treatment techniques. One category of treatments that can sedate the nervous system is the use of psychoactive drugs such as depressants, which are designed to calm the brain, reduce anxiety, and promote sleepiness. Additionally, some therapeutic techniques like the relaxation response technique, developed by Herbert Benson, which includes relaxation and transcendental meditation, can induce a sedative effect on the nervous system by reducing sympathetic arousal. Another effective approach includes biofeedback, which helps individuals gain control over involuntary bodily processes, leading to decreased stress and potentially a sedating effect. Lastly, clinical hypnosis can alter a patient's thoughts and perception to achieve a state of calm.