| auditory fatigue | Loss of sensitivity to sounds as a result of auditory stimulation, manifesting as a temporary shift in auditory threshold. The temporary threshold shift, tts, is expressed in decibels. (12 Dec 1998) |
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| battle fatigue | The World War II name for what is known today as posttraumatic stress, this is a psychological disorder that develops in some individuals who have had major traumatic experiences (and, for example, have been in a serious accident or through a war). The person is typically numb at first but later has symptoms including depression, excessive irritability, guilt (for having survived while others died), recurrent nightmares, flashbacks to the traumatic scene, and overreactions to sudden noises. Posttraumatic stress became known as such in the 70s due to the adjustment problems of some Vietnam veterans. (12 Dec 1998) |
| mental fatigue | Fatigue arising in consequence of mental effort. (12 Dec 1998) |
| chronic fatigue syndrome | <syndrome> An unusual illness, of uncertain cause, that is characterised by unexplained fatigue, weakness, muscle pain, lymph node swelling and malaise. (27 Sep 1997) |
| muscle fatigue | <physiology> A condition resulting from prolonged and strong contraction of a muscle. Studies during prolonged submaximal exercise have shown that muscle fatigue increases in a near direct proportion to the rate of muscle glycogen depletion. Muscle fatigue in short-term maximal exercise is associated with oxygen deprivation and an increased level of blood and muscle lactic acid, and an accompanying increase in hydrogen-ion concentration in the exercised muscle. (12 Dec 1998) |
| fatigue | That state, following a period of mental or bodily activity, characterised by a lessened capacity for work and reduced efficiency of accomplishment, usually accompanied by a feeling of weariness, sleepiness, or irritability. (12 Dec 1998) |
| fatigue fever | An elevation of the body temperature, lasting sometimes several days, following excessive and long continued muscular exertion. (05 Mar 2000) |
| fatigue fracture | Fracture that occurs in bone subject to repeated or unusual subliminal, endogenous stress, most often transverse in configuration. (05 Mar 2000) |
| fatigue strength | The stress level below which a particular component will survive an indefinite number of load cycles (typically about 50% of the ultimate strength of the component). (05 Mar 2000) |
| fatigue syndrome, chronic | Syndrome of unknown cause, characterised by clinically evaluated, unexplained persistent or relapsing chronic fatigue of at least six months' duration which is not the result of ongoing exertion; is not substantially alleviated by rest; and results in substantial reduction of previous levels of occupational, educational, social, or personal activities. Common concurrent symptoms (of six months duration) include impairment of memory or concentration, diffuse pain, sore throat, tender lymph nodes, headaches of a new type, pattern, or severity, and unrefreshing sleep. The aetiology is suspected to be viral or immunologic. There are suggestions that chronic fatigue syndrome (sometimes called myalgic encephalomyelitis) may be identical to neurasthenia and fibromyalgia. (12 Dec 1998) |
| functional vocal fatigue | Difficult or abnormal voice production, the enunciation being too high, too loud, or too hard. Synonym: functional vocal fatigue. Origin: phon-+ G. Astheneia, weakness (05 Mar 2000) |
| accessory visual apparatus | The eyelids, with lashes and eyebrows, lacrimal apparatus, conjunctival sac, and extrinsic muscles of the eyeball. Synonym: organa oculi accessoria, accessory organs, accessory visual apparatus, adnexa oculi, appendages of eye. (05 Mar 2000) |
| Bender Visual Motor Gestalt test | <psychology> A psychological test used by neurologists and clinical psychologists to measure a person's ability to visually copy a set of geometric designs. It consists of nine geometric designs on cards. The subject is asked to redraw them from memory after each one is presented individually. It is useful for measuring visuospatial and visuomotor coordination to detect brain damage. Synonym: Bender Visual Motor Gestalt test. (14 Aug 2000) |
| Broca's visual plane | A plane drawn through the visual axes of each eye. (05 Mar 2000) |
| receptor, visual | The layer of rods and cones, the visual cells, of the retina. (12 Dec 1998) |