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.
It is an inhibitory neurotransmitter, meaning that when it finds its way to its receptor sites, it blocks the tendency of that neuron to fire. Dopamine is strongly associated with reward mechanisms in the brain. Drugs like cocaine, opium, heroin, and alcohol increase the levels of dopamine, as does nicotine.erotonin. Serotonin is an inhibitory neurotransmitter that has been found to be intimately involved in emotion and mood. Too little serotonin has been shown to lead to depression, problems with anger control, obsessive-compulsive disorder, and suicide.