a state of acute depression, lack of psychomotor activity, expressed in complete immobility, taciturnity, weakening of reactions to stimuli. Stupor is observed in some types of psychoses. It is caused by severe mental disorders, organic brain lesions, injuries, infections. There is also stupor as a protective reaction of the body, which occurs after the strongest nervous shocks, as well as in life-threatening situations. In this case, stupor is characterized by a sudden numbness, freezing in place in the position in which the person was at the time of receiving the traumatic information.