Quiz 18: Psychotropic Drugs


The neurohormonal agents in the brain enable the functioning of the central nervous system that affects emotions. The neurotransmitters dopamine, noradrenaline, and serotonin which are part of the limbic system possess enable a mechanism by which the brain can discern of events as pleasant and unpleasant. Norepinephrine has an inhibitory mechanism on the functions such as sleep and is associated with alertness. Serotonin causes changes in behavior and is often referred to as the happy chemical due to its mechanism to emanate a feeling of satiety and joy. Lack of serotonin causes depression. In this way, biochemical mechanisms of the central nervous system involving the neurohormonal agents such as dopamine, noradrenaline, serotonin, norepinephrine and serotonin affect emotions.


The following are the medical terms for the symptoms of mental disorders. Catatonia When unresponsiveness and disorganized behavior is exhibited, and person shows lack of mobility and clear speech the symptom is referred to as catatonia. Insomnia Difficulty to fall or stay asleep and lack of sleep is referred to as insomnia Dystonia Dystonia involves uncontrollable spams of the muscles of the facial region. It is also considered an extrapyramidal symptom associated with some antipsychotic drug therapies. Akathisia Akathisia involving restlessness and fidgeting behavior when forced to sit in one place. Tardive dyskinesia Tardive dyskinesia involves abnormal and involuntary movement so the oral parts such as the lips, tongue and mouth. The symptom may also be seen during drug therapies where it is the result of dopamine receptor hypersensitivity that results due to prolonged blockage of these receptors by the antipsychotic drugs.