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Studies in fruit flies have greatly aided our understanding of the nervous system. Bellen and colleagues take us through the key findings in the last century. They argue that thanks to the unmatched wealth of tools that can be used inDrosophila melanogaster, research in flies will continue to contribute to many aspects of vertebrate neuroscience.
Pulvermüller and Fadiga address the much discussed question of whether speech comprehension depends on activation of cortical motor areas. Reviewing data from neuroimaging, brain stimulation, lesion and computational studies, they conclude that action and perception circuits have interdependent roles in language comprehension.
The importance of neurotransmitter release by astrocytes is highly controversial. Hamilton and Attwell review evidence for the release of glutamate,D-serine and ATP by astrocytes and their role in shaping synaptic activity. Potential mechanisms of astrocyte neurotransmitter release, including regulated exocytosis, are assessed.
Kotaleski and Blackwell describe computational approaches derived from systems biology that have been used to elucidate the complex molecular mechanisms underlying synaptic plasticity. They highlight the advancements produced by these quantitative modelling efforts and discuss new approaches that incorporate data from live-cell imaging.
Emerging data suggest that small regulatory RNAs regulate stem cell self-renewal and neuronal fate specification. Li and Jin review the mechanisms through which this can be achieved and the implications for vertebrate and invertebrate neurogenesis.
The function of adult hippocampal neurogenesis is incompletely understood. Gage and colleagues describe the regulation and maturation of adult-born hippocampal neurons and review behavioural and computational modelling studies that indicate how adult-born neurons might contribute to hippocampus-dependent learning and memory.
Ensheathing glia are essential for the long-term survival of axons; however, the mechanisms by which they contribute to neuronal viability are unclear. Here, Nave proposes that long axons require continuous support from glia to meet their metabolic needs, especially when insulated by myelin.
Epidemiological and pathological evidence points to a link between traumatic brain injury and an increased risk of developing Alzheimer's disease in later life. Smith and colleagues consider the mechanisms underlying this link, with a focus on axonal injury and amyloid-β accumulation after injury.
The putative role of the parieto-frontal mirror circuit in action understanding is hotly debated. Reviewing studies in monkeys and humans, Rizzolatti and Sinigaglia describe what parieto-frontal mirror neurons encode, discuss the cognitive functions this circuit might support and address outstanding issues of controversy.
Palmitoylation is the most frequently observed lipid modification of neuronal proteins. Here, the authors review the roles and regulation of this reversible and highly dynamic post-translational modification in neurophysiological and neuropathological contexts.
The spatial arrangement of sensory receptors on the face is reiterated at each stage of the somatosensory pathway from the brainstem to the cortex. Rijli and colleagues discuss the molecular mechanisms by which somatotopic maps are formed in the brainstem.
Both vertebrates and insects use a broad repertoire of receptors to detect olfactory environmental cues. Kaupp reviews our current understanding of olfactory signalling, highlighting shared features and important differences between the systems used by vertebrates and insects.
The biological bases of individual differences in intelligence are largely unknown. Deary and colleagues discuss why, despite its high heritability, the molecular underpinnings of intelligence remain elusive, and show that variations in the structure and efficiency of brain pathways might contribute to intelligence differences.
Uhlhaas and Singer outline the evidence that schizophrenia is associated with deficits in neural oscillations. They discuss the possible underlying mechanisms and how these impairments might contribute to the pathophysiology of the disorder.
Astrocytes, like neurons, are organized into networks and exchange information through gap junction channels. Giaume and colleagues discuss the rules that govern communication between astrocytes and how astroglia networks can influence the function of neural networks.
The derivation of neural stem cellsin vitro offers a promising tool for basic research and biomedicine. In this Review the authors compare the properties of the cells generated in these culture systems with those present in vivoin an attempt to assess their physiological relevance for the study of neural precursors during CNS development and disease.
Karl Friston shows that different global brain theories all describe principles by which the brain optimizes value and surprise. He discusses how these brain theories fit into the free-energy framework, suggesting that this framework might provide a unified account of brain function.
To celebrate the centenary of Brodmann's brain map, Zilles and Amunts review his pioneering work and its legacy. This article reconsiders the original concepts described by Brodmann and the use of his map for interpreting functional and structural neuroimaging data today.
Sleep improves the consolidation of both declarative and non-declarative memories. Diekelmann and Born discuss the potential mechanisms through which slow wave sleep and rapid eye movement sleep support system and synaptic consolidation.
Sex influences on brain function are emerging in all areas of neuroscience. Jazin and Cahill review sex differences in gene expression in various species and consider the potential mechanisms that underlie these differences, including alternative splicing and epigenetics.