Definitions for nucleus accumbens
nu·cleus ac·cum·bens

WiktionaryRate this definition:0.0 / 0 votes

1. nucleus accumbensnoun

   A dopaminergic nucleus found near the most anterior portion of the caudate nucleus.

2. nucleus accumbensnoun

   The primary nucleus thought to be involved with addiction

3. nucleus accumbensnoun

   The nucleus which received is connected to the ventral tegmental area and the prefrontal cortex.

WikipediaRate this definition:0.0 / 0 votes

1. Nucleus accumbens

   The nucleus accumbens (NAc or NAcc; also known as the accumbens nucleus, or formerly as the nucleus accumbens septi, Latin for "nucleus adjacent to the septum") is a region in the basal forebrain rostral to the preoptic area of the hypothalamus. The nucleus accumbens and the olfactory tubercle collectively form the ventral striatum. The ventral striatum and dorsal striatum collectively form the striatum, which is the main component of the basal ganglia. The dopaminergic neurons of the mesolimbic pathway project onto the GABAergic medium spiny neurons of the nucleus accumbens and olfactory tubercle. Each cerebral hemisphere has its own nucleus accumbens, which can be divided into two structures: the nucleus accumbens core and the nucleus accumbens shell. These substructures have different morphology and functions. Different NAcc subregions (core vs shell) and neuron subpopulations within each region (D1-type vs D2-type medium spiny neurons) are responsible for different cognitive functions. As a whole, the nucleus accumbens has a significant role in the cognitive processing of motivation, aversion, reward (i.e., incentive salience, pleasure, and positive reinforcement), and reinforcement learning (e.g., Pavlovian-instrumental transfer); hence, it has a significant role in addiction. In addition, part of the nucleus accumbens core is centrally involved in the induction of slow-wave sleep. The nucleus accumbens plays a lesser role in processing fear (a form of aversion), impulsivity, and the placebo effect. It is involved in the encoding of new motor programs as well.

WikidataRate this definition:1.0 / 1 vote

1. Nucleus accumbens

   The nucleus accumbens, also known as the accumbens nucleus or as the nucleus accumbens septi in the basal forebrain rostral to the preoptic area. It is considered to be a critical component in the brain's pleasure center due to its association with the ventral striatum. The nucleus accumbens and the olfactory tubercle collectively form the ventral striatum, which is part of the basal ganglia. Each brain hemisphere has its own nucleus accumbens. It is located where the head of the caudate and the anterior portion of the putamen meet just lateral to the septum pellucidum. The nucleus accumbens can be divided into two structures—the nucleus accumbens core and the nucleus accumbens shell. These structures have different morphology and function. Research has indicated the nucleus accumbens has an important role in reward, pleasure, reinforcement learning, laughter, addiction, aggression, fear, impulsivity and the placebo effect.

U.S. National Library of MedicineRate this definition:1.0 / 1 vote

1. Nucleus Accumbens

   Collection of pleomorphic cells in the caudal part of the anterior horn of the lateral ventricle, in the region of the olfactory tubercle, lying between the head of the caudate nucleus and the anterior perforated substance. It is part of the so-called ventral striatum, a composite structure considered part of the basal ganglia.

How to pronounce nucleus accumbens?

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Numerology

1. Chaldean Numerology

   The numerical value of nucleus accumbens in Chaldean Numerology is: 9

2. Pythagorean Numerology

   The numerical value of nucleus accumbens in Pythagorean Numerology is: 5

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Nucleus_Accumbens
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Nucleus_Accumbens
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=nucleus accumbens