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Ventral Striatum
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Ventral Striatum | |
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![]() The olfactory tubercle and nucleus accumbens of the ventral striatum. | |
Details | |
Part of | Basal ganglia Reward system |
Parts | Olfactory Tubercle Nucleus Accumbens |
Identifiers | |
Latin | Striatum |
Anatomical terms of neuroanatomy |
The ventral striatum (from Latin, 'striatus' meaning 'striped), is a subcortical brain region which regulates the limbic functions of reward expectation, motivation, and reward perception[1]. By monitoring the subjective value of stimuli, it tracks the outcomes of both reward and adverse experience predictions and tracks errors made in those predictions. Whereas the dorsal striatum mediates flexible or automated motor actions, the ventral striatum mediates motivation, learning and mood[2]. The ventral striatum is directly involved in emotional regulation, particularly when regulating responses to rewarding stimuli in addiction behaviours[3]. It plays a vital role in reinforcement learning, which is to learn associations between stimulus choices that yield rewards[4]. This role extends to making moral judgements about co-operative conspecifics[5].