Which of the following is a symptom of microsleep?

Microsleep refers to brief episodes of sleep that can occur when an individual is awake, typically lasting only a few seconds. During these episodes, the brain can briefly enter a sleep state, which can lead to a lack of awareness of one's surroundings and impaired performance. One common symptom of microsleep is heavy eyes, as individuals may struggle to keep their eyes open and experience a profound drop in alertness. This physical feeling is often accompanied by a sensation of fatigue or drowsiness, indicating that the body is trying to sleep, even when the person is engaged in an activity, such as driving. Recognizing heavy eyes as a symptom is crucial, as it serves as an important warning sign that attention and reaction time may be compromised, especially in a driving context.