Abstract：
:Dendritic spines are motile structures that contain high concentrations of filamentous actin. Using hippocampal neurons expressing fluorescent actin and the method of fluorescence recovery after photobleaching, we found that 85 +/- 2% of actin in the spine was dynamic, with a turnover time of 44.2 +/- 4.0 s. The rapid turnover is not compatible with current models invoking a large population of stable filaments and static coupling of filaments to postsynaptic components. Low-frequency stimulation known to induce long-term depression in these neurons stabilized nearly half the dynamic actin in the spine. This effect depended on the activation of N-methyl-D-aspartate (NMDA) receptors and the influx of calcium. In neurons from mice lacking gelsolin, a calcium-dependent actin-binding protein, activity-dependent stabilization of actin was impaired. Our studies provide new information on the kinetics of actin turnover in spines, its regulation by neural activity and the mechanisms involved in this regulation.
journal_name
Nat Neuroscijournal_title
Nature neuroscienceauthors
Star EN,Kwiatkowski DJ,Murthy VNdoi
10.1038/nn811subject
Has Abstractpub_date
2002-03-01 00:00:00pages
239-46issue
3eissn
1097-6256issn
1546-1726pii
nn811journal_volume
5pub_type
杂志文章abstract：:In the version of this article initially published, what was originally described as 'conditioned place preference' in a two-chamber mouse experiment could be better described as 'conditioned place avoidance'. ...
journal_title：Nature neuroscience
pub_type： 已发布勘误
doi：10.1038/s41593-018-0323-x
更新日期：2019-03-01 00:00:00
abstract：:Electrophysiological connectivity patterns in cortex often have a few strong connections, which are sometimes bidirectional, among a lot of weak connections. To explain these connectivity patterns, we created a model of spike timing-dependent plasticity (STDP) in which synaptic changes depend on presynaptic spike arri...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn.2479
更新日期：2010-03-01 00:00:00
abstract：:We combined psychophysical and transcranial magnetic stimulation studies to investigate the dynamics of action anticipation and its underlying neural correlates in professional basketball players. Athletes predicted the success of free shots at a basket earlier and more accurately than did individuals with comparable ...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn.2182
更新日期：2008-09-01 00:00:00
abstract：:In vivo model systems are a critical tool for gaining insight into the pathology underlying psychiatric disorders. Although modern functional imaging tools allow study of brain correlates of behavior in clinical groups and genome-wide association studies are beginning to uncover the complex genetic architecture of psy...
journal_title：Nature neuroscience
pub_type： 杂志文章,评审
doi：10.1038/nn.4413
更新日期：2016-11-01 00:00:00
abstract：:Intrinsic signal imaging from inferotemporal (IT) cortex, a visual area essential for object perception and recognition, revealed that visually presented objects activated patches in a distributed manner. When visual features of these objects were partially removed, the simplified stimuli activated only a subset of th...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/90547
更新日期：2001-08-01 00:00:00
abstract：:We investigated the regulation of T-type channels by Rho-associated kinase (ROCK). Activation of ROCK via the endogenous ligand lysophosphatidic acid (LPA) reversibly inhibited the peak current amplitudes of rat Ca(v)3.1 and Ca(v)3.3 channels without affecting the voltage dependence of activation or inactivation, wher...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn1921
更新日期：2007-07-01 00:00:00
abstract：:Individuals' risk attitudes are known to guide choices about uncertain options. However, in the presence of others' decisions, these choices can be swayed and manifest as riskier or safer behavior than one would express alone. To test the mechanisms underlying effective social 'nudges' in human decision-making, we use...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn.4022
更新日期：2015-06-01 00:00:00
abstract：:Arcuate nucleus (ARC) neurons sense the fed or fasted state and regulate hunger. Agouti-related protein (AgRP) neurons in the ARC (ARCAgRP neurons) are stimulated by fasting and, once activated, they rapidly (within minutes) drive hunger. Pro-opiomelanocortin (ARCPOMC) neurons are viewed as the counterpoint to ARCAgRP...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn.4442
更新日期：2017-01-01 00:00:00
abstract：:Cell type-specific expression of optogenetic molecules allows temporally precise manipulation of targeted neuronal activity. Here we present a toolbox of four knock-in mouse lines engineered for strong, Cre-dependent expression of channelrhodopsins ChR2-tdTomato and ChR2-EYFP, halorhodopsin eNpHR3.0 and archaerhodopsi...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn.3078
更新日期：2012-03-25 00:00:00
abstract：:Dopamine (DA) D2 receptors expressed in DA neurons (D2 autoreceptors) exert a negative feedback regulation that reduces DA neuron firing, DA synthesis and DA release. As D2 receptors are mostly expressed in postsynaptic neurons, pharmacological and genetic approaches have been unable to definitively address the in viv...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn.2862
更新日期：2011-07-10 00:00:00
abstract：:Phosphoinositide 3 kinase enhancer (PIKE) is a recently identified nuclear GTPase that activates nuclear phosphoinositide 3-kinase (PI3 kinase). We have identified, cloned and characterized a new form of PIKE, designated PIKE-L, which, unlike the nuclear PIKE-S, localizes to both the cytoplasm and the nucleus. We demo...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn1134
更新日期：2003-11-01 00:00:00
abstract：:Modeling of human neuropsychiatric disorders in animals is extremely challenging given the subjective nature of many symptoms, the lack of biomarkers and objective diagnostic tests, and the early state of the relevant neurobiology and genetics. Nonetheless, progress in understanding pathophysiology and in treatment de...
journal_title：Nature neuroscience
pub_type： 杂志文章,评审
doi：10.1038/nn.2647
更新日期：2010-10-01 00:00:00
abstract：:Recent evidence suggests that presynaptic-acting NMDA receptors (preNMDARs) are important for neocortical synaptic transmission and plasticity. We found that unique properties of the NR3A subunit enable preNMDARs to enhance spontaneous and evoked glutamate release and that NR3A is required for spike timing-dependent l...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn.2750
更新日期：2011-03-01 00:00:00
abstract：:The 'cognitive map' hypothesis proposes that brain builds a unified representation of the spatial environment to support memory and guide future action. Forty years of electrophysiological research in rodents suggest that cognitive maps are neurally instantiated by place, grid, border and head direction cells in the h...
journal_title：Nature neuroscience
pub_type： 杂志文章,评审
doi：10.1038/nn.4656
更新日期：2017-10-26 00:00:00
abstract：:Axonal injury results in regenerative success or failure, depending on whether the axon lies in the peripheral or the CNS, respectively. The present study addresses whether epigenetic signatures in dorsal root ganglia discriminate between regenerative and non-regenerative axonal injury. Chromatin immunoprecipitation f...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/s41593-019-0490-4
更新日期：2019-11-01 00:00:00
abstract：:The auditory system encodes sound by decomposing the amplitude signal arriving at the ear into multiple frequency bands whose center frequencies and bandwidths are approximately exponential functions of the distance from the stapes. This organization is thought to result from the adaptation of cochlear mechanisms to t...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn831
更新日期：2002-04-01 00:00:00
abstract：:Aggression is a social behavior essential for securing resources and defending oneself and family. Thanks to its indispensable function in competition and thus survival, aggression exists widely across animal species, including humans. Classical works from Tinbergen and Lorenz concluded that instinctive behaviors incl...
journal_title：Nature neuroscience
pub_type： 杂志文章,评审
doi：10.1038/s41593-020-00715-2
更新日期：2020-11-01 00:00:00
abstract：:Learning and memory are associated with the formation and modification of neuronal assemblies: populations of neurons that encode what has been learned and mediate memory retrieval upon recall. Functional studies of neuronal assemblies have progressed dramatically thanks to recent technological advances. Here we discu...
journal_title：Nature neuroscience
pub_type： 杂志文章,评审
doi：10.1038/nn.4418
更新日期：2016-12-01 00:00:00
abstract：:To discover novel genes underlying amyotrophic lateral sclerosis (ALS), we aggregated exomes from 3,864 cases and 7,839 ancestry-matched controls. We observed a significant excess of rare protein-truncating variants among ALS cases, and these variants were concentrated in constrained genes. Through gene level analyses...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/s41593-019-0530-0
更新日期：2019-12-01 00:00:00
abstract：:We argue that there will be no single (genetic or cognitive) cause for the diverse symptoms defining autism. We present recent evidence of behavioral fractionation of social impairment, communication difficulties and rigid and repetitive behaviors. Twin data suggest largely nonoverlapping genes acting on each of these...
journal_title：Nature neuroscience
pub_type： 杂志文章,评审
doi：10.1038/nn1770
更新日期：2006-10-01 00:00:00
abstract：:Basal dendrites receive the majority of synapses that contact neocortical pyramidal neurons, yet our knowledge of synaptic processing in these dendrites has been hampered by their inaccessibility for electrical recordings. A new approach to patch-clamp recordings enabled us to characterize the integrative properties o...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn1826
更新日期：2007-02-01 00:00:00
abstract：:Epilepsy is a common and refractory neurological disorder, but the neuronal regulatory mechanisms of epileptogenesis remain largely unclear. Activity-dependent transcription of genes for neurotrophins such as brain-derived neurotrophic factor (BDNF) has been shown to promote epileptogenesis; however, little is known a...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn.3005
更新日期：2011-12-11 00:00:00
abstract：:Age-related decreases in neural function result in part from alterations in synapses. To identify molecular defects that lead to such changes, we focused on the outer retina, in which synapses are markedly altered in old rodents and humans. We found that the serine/threonine kinase LKB1 and one of its substrates, AMPK...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn.3772
更新日期：2014-09-01 00:00:00
abstract：:Neurotransmitters are released continuously at ribbon synapses in the retina and cochlea. Notably, a single ribbon synapse of inner hair cells provides the entire input to each cochlear afferent fiber. We investigated hair cell transmitter release in the postnatal rat cochlea by recording excitatory postsynaptic curre...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn796
更新日期：2002-02-01 00:00:00
abstract：:Although long-term potentiation (LTP) is long-lasting, it is not permanent and decays within weeks after its induction. Little is known about the processes underlying this decay. Here we assessed the contribution of synaptic activity to LTP decay by determining the effect of the competitive NMDA receptor antagonist CP...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn776
更新日期：2002-01-01 00:00:00
abstract：:The deposition of aggregated amyloid-β peptides derived from the pro-amyloidogenic processing of the amyloid precurson protein (APP) into characteristic amyloid plaques (APs) is distinctive to Alzheimer's disease (AD). Alternative APP processing via the metalloprotease ADAM10 prevents amyloid-β formation. We tested wh...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/s41593-019-0432-1
更新日期：2019-08-01 00:00:00
abstract：:The ability to attribute mental states to others, and therefore to predict others' behavior, is particularly advanced in humans. A controversial but untested idea is that this is achieved by simulating the other person's mental processes in one's own mind. If this is the case, then the same neural systems activated by...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn1168
更新日期：2004-01-01 00:00:00
abstract：:The control of cell fate in neural progenitor cells is critical for nervous system development. Nevertheless, the processes involved are only partially known. We found that the expression of the tumor suppressor Pml was restricted to neural progenitor cells (NPCs) in the developing neocortex of the mouse. Notably, in ...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn.2251
更新日期：2009-02-01 00:00:00
abstract：:The precise role of synchronous neuronal firing in signal encoding remains unclear. To examine what kinds of signals can be carried by synchrony, I reproduced a multilayer feedforward network of neurons in an in vitro slice preparation of rat cortex using an iterative procedure. When constant and time-varying frequenc...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn1056
更新日期：2003-06-01 00:00:00
abstract：:The regulation of female reproductive behaviors may involve memories of male pheromone signatures, formed in part by neural circuitry involving the olfactory bulb and hippocampus. These neural structures are the principal sites of adult neurogenesis; however, previous studies point to their independent regulation by s...
journal_title：Nature neuroscience
pub_type： 杂志文章
doi：10.1038/nn1928
更新日期：2007-08-01 00:00:00
