Overt and Covert Effects of Mental Fatigue on Attention Networks: Evidence from Event-Related Potentials during the Attention Network Test

The exhaustion in early recovery isn't a motivation problem, it's a measurable dip in attention and reward response that fades as sleep and the brain's reward system stabilize.

Hour six of a study session is not hour one. Mental fatigue changes what your brain can do, and the research shows exactly what breaks down first and how to protect it.

You've ruled out depression, but you still can't make yourself do anything. Mental fatigue, sleep debt, and a naturally lower baseline dopaminergic tone can flatten motivation on their own, and each one is measurable and addressable.

Practical, research-backed steps for cleaning your home when depression has drained your motivation and executive function.