Which of the following is NOT a psychophysical indicator of hallucinogen use?

The correct answer identifies that "increased heart rate" is not a psychophysical indicator of hallucinogen use. Typically, hallucinogens can be associated with a range of psychological effects, including altered perceptions and cognitive dysfunctions.

While hallucinogens primarily affect the sensory perceptions and psychological states of users, physiological symptoms like increased heart rate are more often linked to stimulant substances. The other options, such as severe divided attention impairment, dazed appearance, and poor perception of time and distance, are well-documented effects of hallucinogen use, as they directly impact cognitive function and sensory processing.

Understanding these distinctions is critical for recognizing the specific signs and symptoms associated with various classes of drugs, which can aid law enforcement and medical professionals in their assessments and interventions.