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- Barbier, Estelle, et al.
(författare)
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mTORC and ProSAPiP1: How Alcohol Changes Synapses of Reward Circuitry
- 2017
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Ingår i: Neuron. - : CELL PRESS. - 0896-6273 .- 1097-4199. ; 96:1
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Alcohol addiction is characterized by broad and persistent changes in brain function, but the underlying neural adaptations remain largely unknown. In this issue of Neuron, Laguesse et al. (2017) describe a neural mechanism through which long-term alcohol exposure induces structural and synaptic adaptations that promote excessive alcohol use.
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- Delegates, Global Neuroethics Summit, et al.
(författare)
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Neuroethics Questions to Guide Ethical Research in the International Brain Initiatives
- 2018
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Ingår i: Neuron. - : CELL PRESS. - 0896-6273 .- 1097-4199. ; 100:1, s. 19-36
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Forskningsöversikt (refereegranskat)abstract
- Increasingly, national governments across the globe are prioritizing investments in neuroscience. Currently, seven active or in-development national-level brain research initiatives exist, spanning four continents. Engaging with the underlying values and ethical concerns that drive brain research across cultural and continental divides is critical to future research. Culture influences what kinds of science are supported and where science can be conducted through ethical frameworks and evaluations of risk. Neuroscientists and philosophers alike have found themselves together encountering perennial questions; these questions are engaged by the field of neuroethics, related to the nature of understanding the self and identity, the existence and meaning of free will, defining the role of reason in human behavior, and more. With this Perspective article, we aim to prioritize and advance to the foreground a list of neuroethics questions for neuroscientists operating in the context of these international brain initiatives.
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- Eriksson, Johan, et al.
(författare)
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Neurocognitive Architecture of Working Memory
- 2015
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Ingår i: Neuron. - : CELL PRESS. - 0896-6273 .- 1097-4199. ; 88:1, s. 33-46
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Forskningsöversikt (refereegranskat)abstract
- A crucial role for working memory in temporary information processing and guidance of complex behavior has been recognized for many decades. There is emerging consensus that working-memory maintenance results from the interactions among long-term memory representations and basic processes, including attention, that are instantiated as reentrant loops between frontal and posterior cortical areas, as well as sub-cortical structures. The nature of such interactions can account for capacity limitations, lifespan changes, and restricted transfer after working-memory training. Recent data and models indicate that working memory may also be based on synaptic plasticity and that working memory can operate on non-consciously perceived information.
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- Gharpure, Anant, et al.
(författare)
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Agonist Selectivity and Ion Permeation in the alpha 3 beta 4 Ganglionic Nicotinic Receptor
- 2019
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Ingår i: Neuron. - : CELL PRESS. - 0896-6273 .- 1097-4199. ; 104:3, s. 501-
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Tidskriftsartikel (refereegranskat)abstract
- Nicotinic acetylcholine receptors are pentameric ion channels that mediate fast chemical neurotransmission. The alpha 3 beta 4 nicotinic receptor subtype forms the principal relay between the central and peripheral nervous systems in the autonomic ganglia. This receptor is also expressed focally in brain areas that affect reward circuits and addiction. Here, we present structures of the alpha 3 beta 4 nicotinic receptor in lipidic and detergent environments, using functional reconstitution to define lipids appropriate for structural analysis. The structures of the receptor in complex with nicotine, as well as the alpha 3 beta 4-selective ligand AT-1001, complemented by molecular dynamics, suggest principles of agonist selectivity. The structures further reveal much of the architecture of the intracellular domain, where mutagenesis experiments and simulations define residues governing ion conductance.
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