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Psychogenic Coma
{{disambiguation ...
A psychogenic effect is one that originates from the brain instead of other physical organs (i.e. the cause is psychological rather than physiological) and may refer to: *Psychogenic pain *Psychogenic disease *Psychogenic amnesia *Psychogenic cough, i.e. a habit cough *Mass psychogenic illness Mass psychogenic illness (MPI), also called mass sociogenic illness, mass psychogenic disorder, epidemic hysteria, or mass hysteria, involves the spread of illness symptoms through a population where there is no infectious agent responsible for c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brain
A brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It is located in the head, usually close to the sensory organs for senses such as vision. It is the most complex organ in a vertebrate's body. In a human, the cerebral cortex contains approximately 14–16 billion neurons, and the estimated number of neurons in the cerebellum is 55–70 billion. Each neuron is connected by synapses to several thousand other neurons. These neurons typically communicate with one another by means of long fibers called axons, which carry trains of signal pulses called action potentials to distant parts of the brain or body targeting specific recipient cells. Physiologically, brains exert centralized control over a body's other organs. They act on the rest of the body both by generating patterns of muscle activity and by driving the secretion of chemicals called hormones. This centralized control allows rapid and coordinated respon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Psychology
Psychology is the scientific study of mind and behavior. Psychology includes the study of conscious and unconscious phenomena, including feelings and thoughts. It is an academic discipline of immense scope, crossing the boundaries between the natural and social sciences. Psychologists seek an understanding of the emergent properties of brains, linking the discipline to neuroscience. As social scientists, psychologists aim to understand the behavior of individuals and groups.Fernald LD (2008)''Psychology: Six perspectives'' (pp.12–15). Thousand Oaks, CA: Sage Publications.Hockenbury & Hockenbury. Psychology. Worth Publishers, 2010. Ψ (''psi''), the first letter of the Greek word ''psyche'' from which the term psychology is derived (see below), is commonly associated with the science. A professional practitioner or researcher involved in the discipline is called a psychologist. Some psychologists can also be classified as behavioral or cognitive scientists. Some psyc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physiology
Physiology (; ) is the scientific study of functions and mechanisms in a living system. As a sub-discipline of biology, physiology focuses on how organisms, organ systems, individual organs, cells, and biomolecules carry out the chemical and physical functions in a living system. According to the classes of organisms, the field can be divided into medical physiology, animal physiology, plant physiology, cell physiology, and comparative physiology. Central to physiological functioning are biophysical and biochemical processes, homeostatic control mechanisms, and communication between cells. ''Physiological state'' is the condition of normal function. In contrast, ''pathological state'' refers to abnormal conditions, including human diseases. The Nobel Prize in Physiology or Medicine is awarded by the Royal Swedish Academy of Sciences for exceptional scientific achievements in physiology related to the field of medicine. Foundations Cells Although there are differ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Psychogenic Pain
Psychogenic pain is physical pain that is caused, increased, or prolonged by mental, emotional, or behavioral factors. Headache, back pain, or stomach pain are some of the most common types of psychogenic pain. Commonly it accompanies or is induced by social rejection, broken heart, grief, lovesickness, regret, or other such emotional events. This pain can also be caused by psychological factors such as anxiety and depression, factors which can affect the onset and severity of pain experienced. Sufferers are often stigmatized, because both medical professionals and the general public tend to think that pain from psychological source is not "real". The International Association for the Study of Pain defines pain as "an unpleasant sensory and emotional experience associated with actual or potential tissue damage, ''or described in terms of such damage''" (emphasis added). In the note accompanying that definition, the following can be found about pain that happens for psychologica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Psychogenic Disease
Classified as a "conversion disorder" by the DSM-IV, a psychogenic disease is a disease in which mental stressors cause physical symptoms of different diseases. The manifestation of physical symptoms without biologically identifiable causes results from disruptions of processes in the brain from psychological stress. During a psychogenic disease, neuroimaging has shown that neural circuits affecting functions such as emotion, executive functioning, perception, movement, and volition are inhibited. These disruptions become strong enough to prevent the brain from voluntarily allowing certain actions (e.g. moving a limb). When the brain is unable to signal to the body to perform an action voluntarily, physical symptoms of a disease are presented even though there is no biological identifiable cause. Examples of diseases that are believed by many to be psychogenic include psychogenic seizures, psychogenic polydipsia, psychogenic tremor, and psychogenic pain. The term ''psychogenic dise ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Psychogenic Amnesia
Psychogenic amnesia or dissociative amnesia is a memory disorder characterized by sudden retrograde episodic memory loss, said to occur for a period of time ranging from hours to years to decades. More recently, "dissociative amnesia" has been defined as a dissociative disorder "characterized by retrospectively reported memory gaps. These gaps involve an inability to recall personal information, usually of a traumatic or stressful nature." In a change from the DSM-IV to the DSM-5, dissociative fugue is now subsumed under dissociative amnesia. The atypical clinical syndrome of the memory disorder (as opposed to organic amnesia) is that a person with psychogenic amnesia is profoundly unable to remember personal information about themselves; there is a lack of conscious self-knowledge which affects even simple self-knowledge, such as who they are. Psychogenic amnesia is distinguished from organic amnesia in that it is supposed to result from a nonorganic cause: no structural brain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habit Cough
A habit cough is a chronic cough that has no underlying organic cause or medical diagnosis, and does not respond to conventional medical treatment. This is sometimes called tic cough, somatic cough syndrome and previously psychogenic cough, but without clinical justification. Different terms and conditions involving this form of chronic cough were ill-defined and not well distinguished. Coughing may develop in children or adolescents after a cold or other airway irritant. Similar symptoms of habit cough have been less frequently reported in adults but may of may not be the same disorder as is seen in children or adolescents. Classification and name History A medical textbook from 1685 by Thomas Willis, (1621-1675) described an adult woman with “a violent dry cough following her day and night, unless she was fallen asleep,” a description that would fit the habit cough diagnosis today. A 1694 medical book by Franciscus Mercurios (1614-1699), a Flemish physician, alchemist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
