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Cadaveric spasm is seen in cases of drowning victims when grass, weeds, roots or other materials are clutched, and provides evidence of life at the time of entry into the water. Cadaveric spasm often crystallizes the last activity one did before death and is therefore significant in forensic investigations, e.g. holding onto a knife tightly. [4]
The phenomenon has been observed to occur several minutes after the removal of medical ventilators used to pump air in and out of brain-dead patients. [4] It also occurs during testing for apnea—that is, suspension of external breathing and motion of the lung muscles—which is one of the criteria for determining brain death used for example by the American Academy of Neurology.
Melanie Klein and her immediate followers considered that "the infant is exposed from birth to the anxiety stirred up by the inborn polarity of instincts—the immediate conflict between the life instinct and the death instinct"; [2] and Kleinians indeed built much of their theory of early childhood around the outward deflection of the latter ...
Rigor mortis [a] (from Latin rigor 'stiffness' and mortis 'of death'), or postmortem rigidity, is the fourth stage of death.It is one of the recognizable signs of death, characterized by stiffening of the limbs of the corpse caused by chemical changes in the muscles postmortem (mainly calcium). [1]
Apparent death [a] is a behavior in which animals take on the appearance of being dead. It is an immobile state most often triggered by a predatory attack and can be found in a wide range of animals from insects and crustaceans to mammals, birds, reptiles, amphibians, and fish.
Humans have been lucky when it comes to avoiding sizeable meteors and mass die-offs. However, if one measuring 50-meters-wide and speeding towards Earth at roughly 9 miles per second exploded in ...
Scientists think tickling and laughter have a social role — in humans and in other animals, including rats. Skip to main content. 24/7 Help. For premium support please call: 800 ...
In animals, including humans, the startle response is a largely unconscious defensive response to sudden or threatening stimuli, such as sudden noise or sharp movement, and is associated with negative affect. [1] Usually the onset of the startle response is a startle reflex reaction.