What is an indicator that resting nystagmus may be present?

Resting nystagmus is a condition characterized by involuntary eye movement that can indicate certain physiological or neurological issues. The presence of resting nystagmus is typically associated with a pathological disorder or the effects of drug use. This is significant because it suggests that there may be a disruption in the normal functioning of the vestibular system or the central nervous system, which can be caused by substances such as alcohol or other psychoactive drugs.

When evaluating a person suspected of DUI, observing signs of resting nystagmus can help law enforcement determine if the individual is impaired due to drugs or an underlying medical condition. Therefore, recognizing this indicator is crucial in conducting thorough and informed assessments during traffic stops.

The other options, while they can be associated with various medical conditions or impairments, do not specifically relate to resting nystagmus in the same way. They might signify other issues, but they do not provide the direct connection to the neurological or pharmacological effects that resting nystagmus does.