Examlex
Fixed costs of entry create an advantage for potential entrants since incumbents have already made these expenditures while potential entrants can avoid these costs.
Perceptual-Motor Coupling
The integration of sensory information with motor actions, facilitating coordination and execution of tasks.
Recurring Sleep Stage
A phase of sleep that occurs cyclically during the sleep period, notably REM (Rapid Eye Movement) sleep, characterized by vivid dreaming and increased brain activity.
Melatonin
Melatonin is a hormone produced by the pineal gland in the brain, involved in regulating sleep-wake cycles and signaling the body to prepare for sleep.
Testosterone
An androgen that is a key hormone in boys’ pubertal development.
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