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  2. Directed attention fatigue - Wikipedia

    en.wikipedia.org/wiki/Directed_attention_fatigue

    Directed attention fatigue. Directed attention fatigue (DAF) is a neuro-psychological phenomenon that results from overuse of the brain's inhibitory attention mechanisms, which handle incoming distractions while maintaining focus on a specific task. The greatest threat to a given focus of attention is competition from other stimuli that can ...

  3. Fatigue - Wikipedia

    en.wikipedia.org/wiki/Fatigue

    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 ...

  4. Combat stress reaction - Wikipedia

    en.wikipedia.org/wiki/Combat_stress_reaction

    Combat stress reaction is an acute reaction that includes a range of behaviors resulting from the stress of battle that decrease the combatant's fighting efficiency. The most common symptoms are fatigue, slower reaction times, indecision, disconnection from one's surroundings, and the inability to prioritize. Combat stress reaction is generally ...

  5. How to Know If You're Dealing With Brain Fog - AOL

    www.aol.com/lifestyle/know-youre-dealing-brain...

    Here's what brain fog is, as well as symptoms associated with it and how to find some relief. Brain fog is a common result of having COVID-19. Here's what brain fog is, as well as symptoms ...

  6. Post-exertional malaise - Wikipedia

    en.wikipedia.org/wiki/Post-exertional_malaise

    Post-exertional malaise (PEM), sometimes referred to as post-exertional symptom exacerbation (PESE) [1] or post-exertional neuroimmune exhaustion (PENE), [2] is a worsening of symptoms that occurs after minimal exertion. It is the hallmark symptom of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) and common in long COVID and ...

  7. Shell shock - Wikipedia

    en.wikipedia.org/wiki/Shell_shock

    It is a reaction to the intensity of the bombardment and fighting that produced helplessness, which could manifest as panic, fear, flight, or an inability to reason, sleep, walk, or talk. [4] During the war, the concept of shell shock was poorly defined. Cases of "shell shock" could be interpreted as either a physical or psychological injury.

  8. Lethargy - Wikipedia

    en.wikipedia.org/wiki/Lethargy

    Lethargy. 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 ...

  9. Central nervous system fatigue - Wikipedia

    en.wikipedia.org/wiki/Central_Nervous_System_Fatigue

    In the brain, serotonin is a neurotransmitter and regulates arousal, behavior, sleep, and mood, among other things. [9] During prolonged exercise where central nervous system fatigue is present, serotonin levels in the brain are higher than normal physiological conditions; these higher levels can increase perceptions of effort and peripheral muscle fatigue. [9]

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