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Since 1942, scientists have discovered many more of the processes involved in the effect of stress upon the body, such as the region of the brain called the amygdala. The series of events by which a sensory stimulus is introduced to the mind, and the amygdala processes the emotion of fear which follows is called the "vision-to-fear pathway", or ...
A typical example of the stress response is a grazing zebra. If the zebra sees a lion closing in for the kill, the stress response is activated as a means to escape its predator. The escape requires intense muscular effort, supported by all of the body's systems. The sympathetic nervous system's activation provides for these needs. A similar ...
50 Signs of Mental Illness: A Guide to Understanding Mental Health is a 2005 book by psychiatrist James Whitney Hicks published by Yale University Press. The book is designed as an accessible psychiatric reference for non-professionals that describes symptoms, treatments and strategies for understanding mental health .
According to the ICD-11, acute stress reaction refers to the symptoms experienced a few hours to a few days after exposure to a traumatic event. In contrast, DSM-5 defines acute stress disorder by symptoms experienced 48 hours to one month following the event. Symptoms experienced for longer than one month are consistent with a diagnosis of ...
In sociology and psychology, mass hysteria is a phenomenon that transmits collective illusions of threats, whether real or imaginary, through a population and society as a result of rumors and fear. [ 1 ] [ 2 ] In medicine, the term is used to describe the spontaneous manifestation—or production of chemicals in the body—of the same or ...
These physical symptoms are interpreted with alarm in people prone to panic attacks. This results in increased anxiety and forms a positive feedback loop, meaning that the more a person experiences symptoms associated with a panic attack, the more they experience feelings of anxiety which serve to worsen their panic attacks. [20]
Fear is an unpleasant emotion that arises in response to perceived dangers or threats.Fear causes physiological and psychological changes. It may produce behavioral reactions such as mounting an aggressive response or fleeing the threat, commonly known as the fight-or-flight response.
Psychological torture, mental torture or emotional torture is a type of torture that relies primarily on psychological effects and only secondarily on any physical harm inflicted. Although not all psychological torture involves the use of physical violence, there is a continuum between psychological torture and physical torture.