Rage can sometimes lead to a state of mind where the individuals experiencing it believe they can do, and often are capable of doing, things that may normally seem physically impossible. Those experiencing rage usually feel the effects of high
adrenaline levels in the body. This increase in adrenal output raises the physical strength and endurance levels of the person and sharpens their senses, while dulling the sensation of pain. High levels of adrenaline impair memory.
Temporal perspective is also affected: people in a rage have described
experiencing events in slow-motion. Rational thought and reasoning would inhibit an individual from acting rapidly upon impulse. An older explanation of this "time dilation" effect is that instead of actually slowing our perception of time, high levels of adrenaline increase our ability to recall specific minutiae of an event after it occurs. Since humans gauge time based on the number of things they can remember, high-adrenaline events such as those experienced during periods of rage seem to unfold more slowly. A person in a state of rage may also lose much of their capacity for rational thought and reasoning, and may act, usually
violently, on their impulses to the point that they may attack until they themselves have been incapacitated or the source of their rage has been destroyed or otherwise removed. A person in rage may also experience
tunnel vision, muffled hearing,
increased heart rate, and
hyperventilation. Their vision may also become "rose-tinted" (hence "seeing red"). They often focus only on the source of their anger. The large amounts of adrenaline and oxygen in the bloodstream may cause a person's extremities to shake. Psychiatrists consider rage to be at one end of the spectrum of
anger, and
annoyance to be at the other side. In 1995, rage was hypothesized to occur when
oxytocin,
vasopressin, and
corticotropin-releasing hormone are rapidly released from the
hypothalamus. This results in the
pituitary gland producing and releasing large amounts of the
adrenocorticotropic hormone, which causes the
adrenal cortex to release
corticosteroids. This chain reaction occurs when faced with a threatening situation. Nearly two decades later, more came to be known about the impacts of high epinephrine. Studies suggest glucose, together with epinephrine from the adrenal medulla have an effect on memory. Although high doses of epinephrine have been proven to impair memory, moderate doses of epinephrine actually enhance memory. This leads to questioning the role that epinephrine has played on the evolution of the genus Homo as well as epinephrine's crucial role during fits of rage. The crucial role that astrocytes play in the formation of muscle memory may also shed light on the beneficial impact of meditation and deep breathing as a method of managing and controlling one's rage. ==Health complications==