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- W2327326787 endingPage "451" @default.
- W2327326787 startingPage "444" @default.
- W2327326787 abstract "Noradrenergic neurons in the locus coeruleus (LC) play a critical role in many functions including learning and memory. This relatively small population of cells sends widespread projections throughout the brain including to a number of regions such as the amygdala which is involved in emotional associative learning and the medial prefrontal cortex which is important for facilitating flexibility when learning rules change. LC noradrenergic cells participate in both of these functions, but it is not clear how this small population of neurons modulates these partially distinct processes. Here we review anatomical, behavioral, and electrophysiological studies to assess how LC noradrenergic neurons regulate these different aspects of learning and memory. Previous work has demonstrated that subpopulations of LC noradrenergic cells innervate specific brain regions suggesting heterogeneity of function in LC neurons. Furthermore, noradrenaline in mPFC and amygdala has distinct effects on emotional learning and cognitive flexibility. Finally, neural recording data show that LC neurons respond during associative learning and when previously learned task contingencies change. Together, these studies suggest a working model in which distinct and potentially opposing subsets of LC neurons modulate particular learning functions through restricted efferent connectivity with amygdala or mPFC. This type of model may provide a general framework for understanding other neuromodulatory systems, which also exhibit cell type heterogeneity and projection specificity." @default.
- W2327326787 created "2016-06-24" @default.
- W2327326787 creator A5003923772 @default.
- W2327326787 creator A5022514179 @default.
- W2327326787 creator A5024369310 @default.
- W2327326787 date "2015-09-01" @default.
- W2327326787 modified "2023-10-17" @default.
- W2327326787 title "Projection specificity in heterogeneous locus coeruleus cell populations: implications for learning and memory" @default.
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