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Although the neural science behind alertness, wakefulness, and arousal are not fully known, the reticular formation is known to play a role in these. [9] The ascending reticular activating system is a postulated group of neural connections that receives sensory input and projects to the cerebral cortex through the midbrain and thalamus from the ...
Acedia, engraving by Hieronymus Wierix, 16th century. Acedia (/ ə ˈ s iː d i ə /; also accidie or accedie / ˈ æ k s ɪ d i /, from Latin acēdia, and this from Greek ἀκηδία, "negligence", ἀ-"lack of" -κηδία "care") has been variously defined as a state of listlessness or torpor, of not caring or not being concerned with one's position or condition in the world.
Lethargy is a state of tiredness, sleepiness, weariness, fatigue, sluggishness, or lack of energy. It can be accompanied by depression , decreased motivation, or apathy . Lethargy can be a normal response to inadequate sleep, overexertion, overworking, stress, lack of exercise, improper nutrition, drug abuse, boredom , or a symptom of an ...
Fatigue in a medical context is used to cover experiences of low energy that are not caused by normal life. [2] [3]A 2021 review proposed a definition for fatigue as a starting point for discussion: "A multi-dimensional phenomenon in which the biophysiological, cognitive, motivational and emotional state of the body is affected resulting in significant impairment of the individual's ability to ...
This is a list of psychiatric medications used by psychiatrists and other physicians to treat mental illness or distress.. The list is ordered alphabetically according to the condition or conditions, then by the generic name of each medication.
This glossary covers terms found in the psychiatric literature; the word origins are primarily Greek, but there are also Latin, French, German, and English terms. Many of these terms refer to expressions dating from the early days of psychiatry in Europe; some are deprecated, and thus are of historic interest.
The word hypnagogia is sometimes used in a restricted sense to refer to the onset of sleep, and contrasted with hypnopompia, Frederic Myers's term for waking up. [2] However, hypnagogia is also regularly employed in a more general sense that covers both falling asleep and waking up.
The term clouding of consciousness has always denoted the main pathogenetic feature of delirium since physician Georg Greiner [5] pioneered the term (Verdunkelung des Bewusstseins) in 1817. [6] The Diagnostic and Statistical Manual of Mental Disorders (DSM) has historically used the term in its definition of delirium. [ 7 ]