PSYCHOLOGY OF EMOTIONS

THE PSYCHOLOGY OF EMOTIONS

STATES OF CONSCIOUSNESS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When cocaine is snorted, free-based, or injected, it produces a rush of euphoria by
A
producing hallucinations
B
depleting the brain’s supply of dopamine, serotonin and norepinephrine
C
increasing the occurrence of alpha waves.
D
triggering a state of dissociation.
E
decreasing manifest content.
Explanation: 

Detailed explanation-1: -For example, cocaine acts by binding to the dopamine transporter, blocking the removal of dopamine from the synapse. Dopamine then accumulates in the synapse to produce an amplified signal to the receiving neurons.

Detailed explanation-2: -Dopamine is a neurotransmitter present in regions of the brain that regulate movement, emotion, cognition, motivation and feelings of pleasure. The overstimulation of this system, which rewards our natural behaviors, produces the euphoric effects sought by people who abuse drugs and teaches them to repeat the behavior.

Detailed explanation-3: -Explain why cocaine is able to bind to the dopamine transporter. Dopamine and cocaine have similar shapes so cocaine can fit transporter. Serotonin is a neurotransmitter released in some synapses in the brain. It is transported back out of the synaptic gap by a transport protein in the pre-synaptic membrane.

Detailed explanation-4: -Mechanism of Action Topical cocaine has an anesthetic effect similar to local anesthetics (such as lidocaine) from sodium channel blockade and interference with action potential propagation. This Vaughn-Williams class IC effect also increases the risk of conduction disturbance and tachyarrhythmias.

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