👉 Counterexcitement is a type of biological signal that occurs when an organism responds to a stimulus by increasing its heart rate, blood pressure, or respiratory rate in response to the stimulus. This can be caused by various stimuli such as electrical signals, chemical signals, or thermal signals. In simple terms, counterexcitement refers to an increase in an organism's reaction to a particular stimulus. It is often used to describe the way that organisms respond to stimuli that are perceived as threatening or harmful.