cognitive fatigue
Brain feels depleted
Cognitive fatigue is mental exhaustion from sustained intellectual effort—the diminished capacity to think clearly after prolonged concentration, decision-making, or information processing.
Unlike physical tiredness, it specifically affects attention, memory, and judgment: After eight hours of depositions, cognitive fatigue set in and I couldn't focus on the contract.
The condition is cumulative; even simple tasks become effortful when mentally depleted.
- brain fogCognitive sluggishness and confusion
- burnoutChronic occupational depletion
- brain drainEmigration of skilled workers
- overwhelmDefeat by excess
- concentrationSustained single-minded attention
mental load · focus · depletion · running on empty · tiredness · sluggish · attention · overload · drained · fuzzy · hazy · mental strain · hitting a wall · weary · worn out · alertness · caffeine · rest
- mental lapseslapse, forget, slip, misplace, overlook
- cognitive symptomsmemory loss, confusion, disorientation, brain fog, forgetfulness
- operator psychologymental workload, human error, decision making, vigilance, alertness
- cognitive disordersdementia, Alzheimer's, Alzheimer's disease, vascular dementia, memory loss
cognitive fatiguemental clarity
Sharpness of thought
mental sharpness · clear-headedness · mental stamina · mental acuity · mental focus
cognitive, fatigue, cognition, cognize, cognizant, cognizance, incognito, recognize, recognition