Agonists are substances that bind to receptors in the brain and activate them, producing a biological response similar to that of a naturally occurring neurotransmitter. They play a critical role in the modulation of various physiological functions and behaviors, influencing everything from mood to movement. Understanding agonists helps clarify how certain drugs or hormones can enhance or mimic the effects of neurotransmitters, shedding light on the complex interplay between physiology and behavior.
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