Results 71 to 80 of about 368,659 (337)

Receptive field center-surround interactions mediate context-dependent spatial contrast encoding in the retina

open access: yeseLife, 2018
Antagonistic receptive field surrounds are a near-universal property of early sensory processing. A key assumption in many models for retinal ganglion cell encoding is that receptive field surrounds are added only to the fully formed center signal.
Maxwell H Turner   +2 more
doaj   +1 more source

Slow feature analysis yields a rich repertoire of complex cell properties [PDF]

open access: yes, 2003
In this study, we investigate temporal slowness as a learning principle for receptive fields using slow feature analysis, a new algorithm to determine functions that extract slowly varying signals from the input data.
Berkes, Pietro, Wiskott, Laurenz
core  

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

open access: yesFEBS Letters, EarlyView.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source

Bayesian population receptive field modeling in human somatosensory cortex

open access: yesNeuroImage, 2020
Somatosensation is fundamental to our ability to sense our body and interact with the world. Our body is continuously sampling the environment using a variety of receptors tuned to different features, and this information is routed up to primary ...
Alexander M. Puckett   +4 more
doaj   +1 more source

Evaluating population receptive field estimation frameworks in terms of robustness and reproducibility. [PDF]

open access: yesPLoS ONE, 2014
Within vision research retinotopic mapping and the more general receptive field estimation approach constitute not only an active field of research in itself but also underlie a plethora of interesting applications.
Mario Senden   +3 more
doaj   +1 more source

Learning Dilation Factors for Semantic Segmentation of Street Scenes

open access: yes, 2017
Contextual information is crucial for semantic segmentation. However, finding the optimal trade-off between keeping desired fine details and at the same time providing sufficiently large receptive fields is non trivial. This is even more so, when objects
DE Rumelhart   +4 more
core   +1 more source

A computational theory of visual receptive fields [PDF]

open access: yesBiological Cybernetics, 2013
A receptive field constitutes a region in the visual field where a visual cell or a visual operator responds to visual stimuli. This paper presents a theory for what types of receptive field profiles can be regarded as natural for an idealized vision system, given a set of structural requirements on the first stages of visual processing that reflect ...
openaire   +4 more sources

The nicotinamide hypothesis revisited—plant defense signaling integrating PARP, nicotinamide, nicotinic acid, epigenetics, and glutathione

open access: yesFEBS Letters, EarlyView.
Nicotinamide (NIC) and nicotinic acid (NIA) are proposed as stress signaling compounds in plants. Oxidative stress may lead to single strand breaks (SSB) in DNA, which activate poly(ADP‐ribose) polymerase (PARP). NIC and NIA are then formed from NAD. NIC and NIA can promote epigenetic changes leading to the expression of defense genes specific for the ...
Torkel Berglund, Anna B. Ohlsson
wiley   +1 more source

Different Roles of Axon Guidance Cues and Patterned Spontaneous Activity in Establishing Receptive Fields in the Mouse Superior Colliculus

open access: yesFrontiers in Neural Circuits, 2014
Visual neurons in the superior colliculus (SC) respond to both bright (On) and dark (off) stimuli in their receptive fields. This receptive field property is due to proper convergence of On- and Off- centered retinal ganglion cells to their target cells ...
Mingna eLiu, Lupeng eWang, Jianhua eCang
doaj   +1 more source

Mechanistic basis for inhibition of the extended‐spectrum β‐lactamase GES‐1 by enmetazobactam and tazobactam

open access: yesFEBS Letters, EarlyView.
Antimicrobial resistance (AMR) is of huge importance, resulting in over 1 million deaths each year. Here, we describe how a new drug, enmetazobactam, designed to help fight resistant bacterial diseases, inhibits a key enzyme (GES‐1) responsible for AMR. Our data show it is a more potent inhibitor than the related tazobactam, with high‐level computation
Michael Beer   +10 more
wiley   +1 more source

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