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Cellular activation of hypothalamic hypocretin/orexin neurons facilitates short-term spatial memory in mice

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journal contribution
posted on 01.07.2020 by Teemu Aitta-aho, Elpiniki Pappa, Denis Burdakov, John Apergis-Schoute
The hypothalamic hypocretin/orexin (HO) system holds a central role in the regulation of several physiological functions critical for food-seeking behavior including mnemonic processes for effective foraging behavior. It is unclear however whether physiological increases in HO neuronal activity can support such processes. Using a designer rM3Ds receptor activation approach increasing HO neuronal activity resulted in improved short-term memory for novel locations. When tested on a non-spatial novelty object recognition task no significant difference was detected between groups indicating that hypothalamic HO neuronal activation can selectively facilitate short-term spatial memory for potentially supporting memory for locations during active exploration.

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