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The mesolimbic pathway, sometimes referred to as the reward pathway, is a dopaminergic pathway in the brain. [1] The pathway connects the ventral tegmental area in the midbrain to the ventral striatum of the basal ganglia in the forebrain. The ventral striatum includes the nucleus accumbens and the olfactory tubercle. [2]
The reward system (the mesocorticolimbic circuit) is a group of neural structures responsible for incentive salience (i.e., "wanting"; desire or craving for a reward and motivation), associative learning (primarily positive reinforcement and classical conditioning), and positively-valenced emotions, particularly ones involving pleasure as a core component (e.g., joy, euphoria and ecstasy).
[3] [2] BSR to the medial forebrain bundle (MFB) through either electrical or chemical means activates key components of the reward pathway also activated by natural rewards. When specific regions of the hypothalamus are electrically stimulated, it elicits reward-related behaviors such as eating, drinking, or copulation responses.
The main dopaminergic pathways of the human brain. Dopaminergic pathways (dopamine pathways, dopaminergic projections) in the human brain are involved in both physiological and behavioral processes including movement, cognition, executive functions, reward, motivation, and neuroendocrine control. [1]
Incentive salience is a cognitive process that grants a "desire" or "want" attribute, which includes a motivational component to a rewarding stimulus. [1] [2] [3] [9] Reward is the attractive and motivational property of a stimulus that induces appetitive behavior – also known as approach behavior – and consummatory behavior. [3]
The limbic loop is a functional pathway of the basal ganglia, in which the ventral pallidum is involved. It (and the internal globus pallidus and substantia nigra pars reticulata) receives input from the temporal lobes, and the hippocampus via the ventral striatum.
Our pleasure and reward systems in the brain are hyper-activated, which makes us display continuous approach behaviors to the reward in question. Our neuro-circuitry is as such that when we stop having access to such pleasurable objects of desire, we then experience negative consequences ( withdrawal symptoms).
Behavioral activation system (BAS) The BAS includes brain regions involved in regulating arousal: cerebral cortex, thalamus, and striatum. [14] The system is responsive to conditioned and unconditioned reward cues. BAS regulates approach behaviors and is referred to as the reward system. [12] It has also been called the "go" system because it ...