Neurocardiogenic syncope is caused by a drop in blood pressure, quickly followed by faster then slower heart rate resulting in poor blood and oxygen flow to the brain which results in temporary loss of consciousness. Neurocardiogenic syncope (NCS) is also referred to as vasovagal syncope or neurally mediated syncope.
Dopamine Levels Increase. All addictive drugs affect brain pathways involving rewardâthat is, the dopamine system in the reward pathway. Within seconds to minutes of entering the body, drugs cause dramatic changes to synapses in the brain.By activating the brain's reward circuitry, drugs deliver a jolt of intense pleasure.ll addictive drugs affect brain pathways involving rewardâthat is, the dopamine system in the reward pathway. Within seconds to minutes of entering the body, drugs cause dramatic changes to synapses in the brain.
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.