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The efficacy and duration of memory storage is regulated by neuromodulatory transmitter actions. While the modulatory transmitter serotonin (5-HT) plays an important role in implicit forms of memory in the invertebrate Aplysia, its function in explicit memory mediated by the mammalian hippocampus is less clear. Specifically, the consequences elicited by the spatio-temporal gradient of endogenous 5-HT...
Despite the well-established role of serotonin signaling in mood regulation, causal relationships between serotonergic neuronal activity and behavior remain poorly understood. Using a pharmacogenetic approach, we find that selectively increasing serotonergic neuronal activity in wild-type mice is anxiogenic and reduces floating in the forced-swim test, whereas inhibition has no effect on the same...
Depression is a common and devastating neuropsychiatric disorder, and a better understanding of its pathophysiology is needed to improve diagnosis, treatment and prevention. By considering the developmental dimensions of genetic and environmental factors, new insights have been found into the etiology and pathophysiology of depression. Specifically, we begin to understand how certain vulnerability...
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