Finally, a Shakespearean tragic hero will lose their life in the end of the play so the message of what is good in the play can be reestablished. In Shakespeareâs Macbeth, the title figure of the play can be seen as a tragic hero. Early on in the play, Macbeth is established as being of great stature.
Neurons are separated by gaps or spaces known as synapses. As the brainâs chemical messengers, neurotransmitters must find receptors on other neurons in order to transmit the messages they contain. How do drugs affect neurotransmitters? It is helpful for addiction counselors to be familiar with the neurotransmitters affected by drugs. This information is also important in understanding how psychiatric medications are thought to work. There are many neurotransmitters in the brain, but we will focus on the ones that are involved with the reward pathway. Different drugs have differential effects on neurotransmitters. Marijuana and opiates/opioids can activate neurons because their chemical structure emulates that of a natural neurotransmitter. Cocaine and crystal meth, on the other hand, can cause the nerve cells to release much larger than normal amounts of natural neurotransmitters or prevent the usual reabsorption of these brain chemicals. Serotonin is a neurotransmitter that affects mood, memory processing, and cognition.
Long-term Cannabis Use. Studies have linked the long-term abuse of substances such as alcohol, cocaine and heroin with a decrease in the brainâs overall production and release of dopamine. This is because most drugs cause damage to brain cells that produce dopamine.Cannabis users can breathe easy, however, as cannabinoids are believed to have the opposite effect. Likewise, a study published in 2012 found that long-term cannabis consumption does not result in permanent changes in dopamine levels.hese chemicals are used by the brain to transmit signals. Dopamine can affect mood and attention. But dopamine is not just any neurotransmitter. Dopamine is known as the âfeel goodâ neurotransmitter because of its role in feelings of happiness and pleasure.