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  2. Fatigue - Wikipedia

    en.wikipedia.org/wiki/Fatigue

    Mental fatigue is a temporary inability to maintain optimal cognitive performance. The onset of mental fatigue during any cognitive activity is gradual, and depends upon an individual's cognitive ability, and also upon other factors, such as sleep deprivation and overall health. Mental fatigue has also been shown to decrease physical ...

  3. Directed attention fatigue - Wikipedia

    en.wikipedia.org/wiki/Directed_attention_fatigue

    Directed attention fatigue (DAF) is a neuropsychological phenomenon that results from overuse of the brain’s inhibitory attention mechanisms, which handle incoming distractions while maintaining focus on a specific task.

  4. Mental energy - Wikipedia

    en.wikipedia.org/wiki/Mental_energy

    Many people complain of low mental energy, which can interfere with work and daily activities. [1] Low mental energy and fatigue are major public health concerns. [1] People may pursue remedies or treatment for low mental energy. [1] Seeking to improve mental energy is a common reason that people take dietary supplements. [6]

  5. Lethargy - Wikipedia

    en.wikipedia.org/wiki/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 ...

  6. Psychological stress and sleep - Wikipedia

    en.wikipedia.org/wiki/Psychological_stress_and_Sleep

    In fact, many studies have found a bidirectional relationship between stress and sleep. This means that sleep quality can affect stress levels, and stress levels can affect sleep quality. Sleep change depends on the type of stressor, sleep perception, related psychiatric conditions, environmental factors, and physiological limits. [5] [6] [4] [7]

  7. Emotional exhaustion - Wikipedia

    en.wikipedia.org/wiki/Emotional_exhaustion

    Personal resources, such as status, social support, money, or shelter, may reduce or prevent an employee's emotional exhaustion. According to the Conservation of Resources theory (COR), people strive to obtain, retain and protect their personal resources, either instrumental (for example, money or shelter), social (such as social support or status), or psychological (for example, self-esteem ...

  8. Ego depletion - Wikipedia

    en.wikipedia.org/wiki/Ego_depletion

    Ego depletion is the idea that self-control or willpower draws upon conscious mental resources that can be taxed to exhaustion when in constant use with no reprieve (with the word "ego" used in the psychoanalytic sense rather than the colloquial sense). [1]

  9. Central nervous system fatigue - Wikipedia

    en.wikipedia.org/wiki/Central_Nervous_System_Fatigue

    Central nervous system fatigue, or central fatigue, is a form of fatigue that is associated with changes in the synaptic concentration of neurotransmitters within the central nervous system (CNS; including the brain and spinal cord) which affects exercise performance and muscle function and cannot be explained by peripheral factors that affect muscle function.

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