Abstract:
:Humans are motivated to seek information from their environment. How the brain motivates this behavior is unknown. One speculation is that the brain employs neuromodulatory systems implicated in primary reward-seeking, in particular dopamine, to instruct information-seeking. However, there has been no causal test for the role of dopamine in information-seeking. Here, we show that administration of a drug that enhances dopamine function (dihydroxy-L-phenylalanine; L-DOPA) reduces the impact of valence on information-seeking. Specifically, while participants under Placebo sought more information about potential gains than losses, under L-DOPA this difference was not observed. The results provide new insight into the neurobiology of information-seeking and generates the prediction that abnormal dopaminergic function (such as in Parkinson's disease) will result in valence-dependent changes to information-seeking.
journal_name
Elifejournal_title
eLifeauthors
Vellani V,de Vries LP,Gaule A,Sharot Tdoi
10.7554/eLife.59152subject
Has Abstractpub_date
2020-12-02 00:00:00issn
2050-084Xpii
59152journal_volume
9pub_type
杂志文章相关文献
eLife文献大全abstract::Migration of skeletal muscle precursor cells is a key step during limb muscle development and depends on the activity of PAX3 and MET. Here, we demonstrate that BRAF serves a crucial function in formation of limb skeletal muscles during mouse embryogenesis downstream of MET and acts as a potent inducer of myoblast cel...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.18351
更新日期:2016-12-01 00:00:00
abstract::Conventional Ly6Chi monocytes have developmental plasticity for a spectrum of differentiated phagocytes. Here we show, using conditional deletion strategies in a mouse model of Toll-like receptor (TLR) 7-induced inflammation, that the spectrum of developmental cell fates of Ly6Chi monocytes, and the resultant inflamma...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.57007
更新日期:2020-07-29 00:00:00
abstract::Humans and animals construct internal models of their environment in order to select appropriate courses of action. The representation of uncertainty about the current state of the environment is a key feature of these models that controls the rate of learning as well as directly affecting choice behaviour. To maintai...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.39404
更新日期:2019-02-28 00:00:00
abstract::While traditional microbiological freshwater tests focus on the detection of specific bacterial indicator species, including pathogens, direct tracing of all aquatic DNA through metagenomics poses a profound alternative. Yet, in situ metagenomic water surveys face substantial challenges in cost and logistics. Here, we...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.61504
更新日期:2021-01-19 00:00:00
abstract::Daily rhythms of food anticipatory activity (FAA) are regulated independently of the suprachiasmatic nucleus, which mediates entrainment of rhythms to light, but the neural circuits that establish FAA remain elusive. In this study, we show that mice lacking the dopamine D1 receptor (D1R KO mice) manifest greatly reduc...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.03781
更新日期:2014-09-12 00:00:00
abstract::Cytomegaloviruses (CMVs) are ubiquitous pathogens known to employ numerous immunoevasive strategies that significantly impair the ability of the immune system to eliminate the infected cells. Here, we report that the single mouse CMV (MCMV) protein, m154, downregulates multiple surface molecules involved in the activa...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.50803
更新日期:2020-01-13 00:00:00
abstract::The dorsal raphe nucleus (DRN) is an important source of neuromodulators and has been implicated in a wide variety of behavioral and neurological disorders. The DRN is subdivided into distinct anatomical subregions comprised of multiple cell types, and its complex cellular organization has impeded efforts to investiga...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.46464
更新日期:2019-08-14 00:00:00
abstract::The final identity of a differentiated neuron is determined by multiple signaling events, including activity dependent calcium transients. Non-canonical Frizzled2 (Fz2) signaling generates calcium transients that determine neuronal polarity, neuronal migration, and synapse assembly in the developing vertebrate brain. ...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.07046
更新日期:2015-05-08 00:00:00
abstract::Smoothened (Smo) inhibition by Patched (Ptch) is central to Hedgehog (Hh) signaling. Ptch, a proton driven antiporter, is required for Smo inhibition via an unknown mechanism. Hh ligand binding to Ptch reverses this inhibition and activated Smo initiates the Hh response. To determine whether Ptch inhibits Smo strictly...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.17634
更新日期:2016-08-23 00:00:00
abstract::Drug treatment of 3D cancer spheroids more accurately reflects in vivo therapeutic responses compared to adherent culture studies. In EGFR-mutated lung adenocarcinoma, EGFR-TKIs show enhanced efficacy in spheroid cultures. Simultaneous inhibition of multiple parallel RTKs further enhances EGFR-TKI effectiveness. We sh...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.58204
更新日期:2020-09-08 00:00:00
abstract::Oligomeric assemblies of intraflagellar transport (IFT) particles build cilia through sequential recruitment and transport of ciliary cargo proteins within cilia. Here we present the 1.8 Å resolution crystal structure of the Chlamydomonas IFT-B protein IFT80, which reveals the architecture of two N-terminal β-propelle...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.33067
更新日期:2018-04-16 00:00:00
abstract::Motile ciliopathies are characterized by specific defects in cilia beating that result in chronic airway disease, subfertility, ectopic pregnancy, and hydrocephalus. While many patients harbor mutations in the dynein motors that drive cilia beating, the disease also results from mutations in so-called dynein axonemal ...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.38497
更新日期:2018-12-18 00:00:00
abstract::The diaphragm muscle is essential for breathing in mammals. Its asymmetric elevation during contraction correlates with morphological features suggestive of inherent left-right (L/R) asymmetry. Whether this asymmetry is due to L versus R differences in the muscle or in the phrenic nerve activity is unknown. Here, we h...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.18481
更新日期:2017-06-22 00:00:00
abstract::Toxoplasma gondii contains a limited subset of actin binding proteins. Here we show that the putative actin regulator cyclase-associated protein (CAP) is present in two different isoforms and its deletion leads to significant defects in some but not all actin dependent processes. We observe defects in cell-cell commun...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.50598
更新日期:2019-10-02 00:00:00
abstract::Bacillus subtilis can measure the activity of the enzymes that remodel the cell wall to ensure that the levels of activity are 'just right'. ...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.54244
更新日期:2020-01-24 00:00:00
abstract::Innate lymphoid cells (ILCs) are recently identified lymphocytes that limit infection and promote tissue repair at mucosal surfaces. However, the pathways underlying ILC development remain unclear. Here we show that the transcription factor NFIL3 directs the development of a committed bone marrow precursor that differ...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.04406
更新日期:2014-10-13 00:00:00
abstract::Efficient precision genome engineering requires high frequency and specificity of integration at the genomic target site. Here, we describe a set of resources to streamline reporter gene knock-ins in zebrafish and demonstrate the broader utility of the method in mammalian cells. Our approach uses short homology of 24-...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.53968
更新日期:2020-05-15 00:00:00
abstract::In bacteria, multicellular behaviors are regulated by cell-cell signaling through the exchange of both diffusible and contact-dependent signals. In a multicellular context, Myxococcus cells can share outer membrane (OM) materials by an unknown mechanism involving the traAB genes and gliding motility. Using live imagin...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.00868
更新日期:2013-07-23 00:00:00
abstract::Presynaptic homeostatic plasticity stabilizes information transfer at synaptic connections in organisms ranging from insect to human. By analogy with principles of engineering and control theory, the molecular implementation of PHP is thought to require postsynaptic signaling modules that encode homeostatic sensors, a...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.31535
更新日期:2018-01-05 00:00:00
abstract::INAD assembles key enzymes of the Drosophila compound eye photo-transduction pathway into a supramolecular complex, supporting efficient and fast light signaling. However, the molecular mechanism that governs the interaction between INAD and NORPA (phospholipase Cβ, PLCβ), a key step for the fast kinetics of the light...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.41848
更新日期:2018-12-10 00:00:00
abstract::Mitochondrial dysfunction is associated with activation of the integrated stress response (ISR) but the underlying triggers remain unclear. We systematically combined acute mitochondrial inhibitors with genetic tools for compartment-specific NADH oxidation to trace mechanisms linking different forms of mitochondrial d...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.49178
更新日期:2020-05-28 00:00:00
abstract::In recent years, functional genomics approaches combining genetic information with bulk RNA-sequencing data have identified the downstream expression effects of disease-associated genetic risk factors through so-called expression quantitative trait locus (eQTL) analysis. Single-cell RNA-sequencing creates enormous opp...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.52155
更新日期:2020-03-09 00:00:00
abstract::The risk of developing cancer is correlated with body size and lifespan within species. Between species, however, there is no correlation between cancer and either body size or lifespan, indicating that large, long-lived species have evolved enhanced cancer protection mechanisms. Elephants and their relatives (Probosc...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.65041
更新日期:2021-01-29 00:00:00
abstract::During translation elongation, the ribosome ratchets along its mRNA template, incorporating each new amino acid and translocating from one codon to the next. The elongation cycle requires dramatic structural rearrangements of the ribosome. We show here that deep sequencing of ribosome-protected mRNA fragments reveals ...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.01257
更新日期:2014-05-09 00:00:00
abstract::Mitochondria play important roles in cellular processes and disease, yet little is known about how the transcriptional regime of the mitochondrial genome varies across individuals and tissues. By analyzing >11,000 RNA-sequencing libraries across 36 tissue/cell types, we find considerable variation in mitochondrial-enc...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.41927
更新日期:2019-02-18 00:00:00
abstract::Cardiac conduction defects decrease life expectancy in myotonic dystrophy type 1 (DM1), a CTG repeat disorder involving misbalance between two RNA binding factors, MBNL1 and CELF1. However, how DM1 condition translates into conduction disorders remains poorly understood. Here we simulated MBNL1 and CELF1 misbalance in...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.51114
更新日期:2019-12-12 00:00:00
abstract::More than half of long-term brain tumor survivors develop irreversible cognitive decline that severely affect their quality of life. However, there is no pre-clinical model that allows long-term assessment of cognition, and there is no treatment which ameliorates cognitive deficits in patients. Here, we report a novel...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.38865
更新日期:2018-11-13 00:00:00
abstract::Spatial and temporal cues are required to specify neuronal diversity, but how these cues are integrated in neural progenitors remains unknown. Drosophila progenitors (neuroblasts) are a good model: they are individually identifiable with relevant spatial and temporal transcription factors known. Here we test whether s...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.44036
更新日期:2019-01-29 00:00:00
abstract::AKT is implicated in neurological disorders. AKT has three isoforms, AKT1/AKT2/AKT3, with brain cell type-specific expression that may differentially influence behavior. Therefore, we examined single Akt isoform, conditional brain-specific Akt1, and double Akt1/3 mutant mice in behaviors relevant to neuropsychiatric d...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.56630
更新日期:2020-12-16 00:00:00
abstract::Understanding temporal dynamics of COVID-19 symptoms could provide fine-grained resolution to guide clinical decision-making. Here, we use deep neural networks over an institution-wide platform for the augmented curation of clinical notes from 77,167 patients subjected to COVID-19 PCR testing. By contrasting Electroni...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.58227
更新日期:2020-07-07 00:00:00