Final answer:
The incorrect statement is C, as chronic use of Δ9THC is typically associated with decreased motivation. Δ9THC is known to be psychotoxic in some individuals, relatively safe in overdose, and reduces aqueous humor production. Physical dependence can cause withdrawal symptoms, and methadone is used in heroin addiction treatment for its less euphoric but withdrawal-preventing effects.
Step-by-step explanation:
The incorrect statement about Δ9-tetrahydrocannabinol (Δ9THC) is option C: "Is associated with an increase in motivational behavior if used chronically." Chronic use of Δ9THC or marijuana is generally associated with a decrease in motivation, often referred to as 'amotivational syndrome'. This condition is characterized by a diminished or absent drive to engage in typically rewarding activities. While Δ9THC is psychotoxic in susceptible individuals (A) and is associated with decreased aqueous humor production (D), which is why it is sometimes used to treat glaucoma, it is also relatively safe in overdose (B) compared to other drugs, such as opioids.Physical dependence on psychoactive drugs can result in withdrawal symptoms like tremors, pain, and seizures. Methadone is used in addiction treatment because it is a long-acting opioid that can prevent withdrawal symptoms without producing the same euphoric effects as heroin. This can aid in the process of rehabilitation.Prozac is indeed a psychoactive drug as it affects brain function, resulting in changes in perception, mood, consciousness, cognition, and behavior. The three classes of psychoactive drugs that include opioids are narcotics, depressants, and analgesics. Anxiolytics, which can be prescribed by a physician, act to reduce anxiety and may include drugs that activate GABA receptors, such as benzodiazepines and barbiturates. Drugs that activate GABA receptors generally have a depressant effect because GABA is a neurotransmitter that inhibits neuronal activity in the brain.