Which category of drugs increases the activity of the central nervous system, enhancing feelings and senses?

Stimulants are a category of drugs that enhance the activity of the central nervous system, leading to increased alertness, attention, and energy levels. They elevate mood, enhance feelings of euphoria, and can intensify sensory perceptions. Common examples include caffeine, nicotine, and illicit drugs like cocaine and methamphetamine.

When stimulants are used, they can create a heightened sense of awareness and excitement, often leading to improved physical performance and cognitive function in the short term. This is due to their ability to increase levels of neurotransmitters such as dopamine and norepinephrine in the brain, which boosts brain activity and enhances various physiological processes.

In contrast, depressants, such as alcohol and benzodiazepines, function by slowing down the central nervous system, leading to decreased energy and relaxation. Hallucinogens, like LSD and psilocybin, alter perceptions and can create vivid sensory experiences but do not specifically enhance overall CNS activity. Analgesics are primarily used to relieve pain and do not significantly impact central nervous system activity in enhancing feelings or sensory experiences.