ArticleNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2019
The medial septum enhances reversal learning via opposing actions on ventral tegmental area and substantia nigra dopamine neurons.
Article in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed, 14 citations in OpenAlex.
- Medial Prefrontal Cortex to Medial Septum Pathway Activation Improves Cognitive Flexibility in Rats.The international journal of neuropsychopharmacology · 2023Article
- Hippocampus-prefrontal cortex inputs modulate spatial learning and memory in a mouse model of sepsis induced by cecal ligation puncture.CNS neuroscience & therapeutics · 2023Article
- Medial septum activation improves strategy switching once strategies are well-learned via bidirectional regulation of dopamine neuron population activity.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2022Article
- Modulation of Dopamine for Adaptive Learning: A Neurocomputational Model.Computational brain & behavior · 2021Article
- Dorsolateral Striatal proBDNF Improves Reversal Learning by Enhancing Coordination of Neural Activity in Rats.Molecular neurobiology · 2020Article
- Dysregulation of Midbrain Dopamine System and the Pathophysiology of Schizophrenia.Frontiers in psychiatry · 2020Review
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Abstract
Cognitive flexibility deficits are one of the most pervasive symptoms across psychiatric disorders, making continued investigation of the circuitry underlying this function a top priority. Medial septum (MS) lesions lead to perseverative, inflexible-type behavior; however, a role for this region in cognitive flexibility circuitry has never been examined. We activated the MS (DREADDs) and measured performance in a T-maze spatial reversal learning task in male Sprague-Dawley rats. Systemic activation of the MS (CNO) significantly decreased both trials to perform a reversal and entries into the previously baited arm. Intra-ventral subiculum CNO enhanced reversal learning in the same manner as systemic CNO and also significantly increased ventral tegmental area and decreased substantia nigra dopamine neuron population activity. Finally, co-injection of the D1 antagonist SCH23390 with CNO prevented the enhanced reversal learning performance seen in the previous two experiments. Taken together, these data suggest a key role for the MS in cognitive flexibility, and suggest that MS-mediated changes in midbrain dopamine neuron population activity could be one mechanism by which this occurs.
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