The brain is the most delicate part of the entire body. Through its neuronal system, it connects all brain cells that control physical and psychological stimuli in order to transmit information. One of its most important regions is the nucleus accumbens, a part of the brain that controls stimuli related to motivation and is closely linked to addictions. Below, we explain what it consists of and what the function of the nucleus accumbens is.
What Is the Nucleus Accumbens
Although it is not usually mentioned and is therefore little known by the general population, this part of the brain is of great importance in normal functioning. The nucleus accumbens is located in the subcortical region and is responsible for managing a person’s reward circuit. Through emotional changes, cognitive variations, motivational factors, and motor movements, it controls the will to convert it into action. In this way, when all these factors drive the individual to desire something specific, the person feels the need to obtain it. Therefore, it is the system that manages pleasure-seeking behaviors.
When the desire is fulfilled, the nucleus accumbens stimulates the brain to create a sensation of pleasure in the person. Consequently, the mind interprets it as a reward and recognizes a positive behavior that should be reinforced. This process translates into a factor that causes motivation and affects the individual’s personality. In the field of addictions, drugs alter the normal functioning of the brain. Although they initially provide pleasure and satisfaction, they also develop a dependency bond. Thus, when an addict cannot consume suddenly, craving appears along with other symptoms known as withdrawal syndrome that severely harm the body.
Its Functions
In addition to participating in the reward system, the function of the nucleus accumbens is to interact with other parts of the brain that influence a person’s psychology:
- Emotional changes: One of its main functions is to convert motivation into an action that meets a need. With this activity, it participates in the creation of emotional memory. A capacity that manages mental processes linked to emotion and decision-making.
- Behavioral planning: By taking part in decisions, it also determines behavior and emotional order in priorities.
- Evaluation of situations: With this function, emotional information is linked with a subjective assessment created by emotional memory. The objective is to meet a specific need.
- Control of addictions: By managing the reward system, the nucleus accumbens controls addiction processes to substances and behavioral conducts. When a person takes drugs, they stimulate the brain, producing an increase in dopamine levels. A substance that controls motivation.
- The pursuit of pleasure: The nucleus accumbens is responsible for directing motivation in order to seek behaviors that provide pleasure.
- Learning and memory: By controlling motivation and the reward system, pleasurable behaviors are reinforced and behavioral habits are created.
- Aggressive behaviors: Hyperactivity and massive release of dopamine can lead to aggressive behaviors. Consequently, the capacity for inhibition is reduced and the person seeks personal satisfaction without assessing the risks. A fact that is common in drug use.
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