Results 21 to 30 of about 880,117 (356)
Distinct fos-expressing neuronal ensembles in the ventromedial prefrontal cortex mediate food reward and extinction memories [PDF]
, 2016 In operant learning, initial reward-associated memories are thought to be distinct from subsequent extinction-associated memories. Memories formed during operant learning are thought to be stored in “neuronal ensembles.” Thus, we hypothesize that ...
Bossert, Jennifer M. +10 more
core +2 more sources
Extinction of cue-evoked food seeking recruits a GABAergic interneuron ensemble in the dorsal medial prefrontal cortex of mice [PDF]
, 2020 Animals must quickly adapt food-seeking strategies to locate nutrient sources in dynamically changing environments. Learned associations between food and environmental cues that predict its availability promote food-seeking behaviors.
Brebner, Leonie S +9 more
core +2 more sources
The extinction of the dinosaurs [PDF]
Biological Reviews, 2014 ABSTRACTNon‐avian dinosaurs went extinct 66 million years ago, geologically coincident with the impact of a large bolide (comet or asteroid) during an interval of massive volcanic eruptions and changes in temperature and sea level. There has long been fervent debate about how these events affected dinosaurs.
Brusatte, Stephen L. +10 more
openaire +4 more sources
Multiple extinction routes in stochastic population models [PDF]
Phys. Rev. E 85, 021140 (2012), 2011 Isolated populations ultimately go extinct because of the intrinsic noise of elementary processes. In multi-population systems extinction of a population may occur via more than one route. We investigate this generic situation in a simple predator-prey (or infected-susceptible) model.
arxiv +1 more source
Interstellar Grains: Effect of Inclusions on Extinction [PDF]
Earth Planets Space, Vol. 63 (No. 10), pp. 1041-1045, 2011, 2011 A composite dust grain model which simultaneously explains the observed interstellar extinction, polarization, IR emission and the abundance constraints, is required. We present a composite grain model, which is made up of a host silicate oblate spheroid and graphite inclusions.
arxiv +1 more source
Probing Cosmic Dust of the Early Universe through High-Redshift Gamma-Ray Bursts [PDF]
, 2008 We explore the extinction properties of the dust in the distant universe through the afterglows of high-redshifted GRBs based on the "Drude" model which, unlike previous studies, does not require a prior assumption of template extinction laws.
Aigen Li +31 more
core +2 more sources
Increased perceived self-efficacy facilitates the extinction of fear in healthy participants
Frontiers in Behavioral Neuroscience, 2015 Self-efficacy has been proposed as an important element of a successful cognitive behavioral treatment. Positive changes in perceived self-efficacy have been linked to an improved adaptive emotional and behavioral responding in the context of anxiety ...
Armin eZlomuzica +3 more
doaj +1 more source
The Mid-Infrared Extinction Law in the Ophiuchus, Perseus, and Serpens Molecular Clouds [PDF]
, 2008 We compute the mid-infrared extinction law from 3.6-24 microns in three molecular clouds: Ophiuchus, Perseus, and Serpens, by combining data from the "Cores to Disks" Spitzer Legacy Science program with deep JHKs imaging.
Chapman, Nicholas L. +3 more
core +2 more sources
The Extinction and De-Extinction of Species
Philosophy & Technology, 2016 In this paper, we discuss the following four alternative ways of understanding the outcomes of resurrection biology (also known as de-extinction). Implications of each of the ways are discussed with respect to concepts of species and extinction. (1) Replication: animals created by resurrection biology do not belong to the original species but are ...
Siipi, Helena, Finkelman, Leonard
openaire +3 more sources
Open Mathematics, 2019 The extinction property of a two species competitive stage-structured phytoplankton system with harvesting is studied in this paper. Several sets of sufficient conditions which ensure that one of the components will be driven to extinction are ...
Huang Xiaoyan +3 more
doaj +1 more source