546 results found
    1. Neuroscience

    Representational untangling by the firing rate nonlinearity in V1 simple cells

    Merse E Gáspár, Pierre-Olivier Polack ... Gergő Orbán
    Firing rate nonlinearity recovers linear decodability of orientation information from simple cells of the primary visual cortex under uncertainty of nuisance parameters phase and spatial frequency.
    1. Neuroscience

    Dendritic nonlinearities are tuned for efficient spike-based computations in cortical circuits

    Balázs B Ujfalussy, Judit K Makara ... Máté Lengyel
    Dendrites combine the inputs that they receive from other neurons using calculations that have been optimized for those particular input patterns.
    1. Neuroscience

    Adaptation in cone photoreceptors contributes to an unexpected insensitivity of primate On parasol retinal ganglion cells to spatial structure in natural images

    Zhou Yu, Maxwell H Turner ... Fred Rieke
    A combination of electrophysiology and quantitative modeling shows that subtle changes in input due to adaptation in cone phototransduction control the linearity or nonlinearity of how ganglion cells integrate spatial inputs.
    1. Neuroscience

    Coding of chromatic spatial contrast by macaque V1 neurons

    Abhishek De, Gregory D Horwitz
    Many V1 double-opponent cells integrate light information across their receptive fields as linearly as simple cells do.
    1. Computational and Systems Biology
    2. Neuroscience

    Mapping nonlinear receptive field structure in primate retina at single cone resolution

    Jeremy Freeman, Greg D Field ... EJ Chichilnisky
    Multi-electrode recordings and modeling are combined to reveal the transformations of signals from cones to bipolar cells and then to ganglion cells within the primate retina.
    1. Neuroscience

    A simple retinal mechanism contributes to perceptual interactions between rod- and cone-mediated responses in primates

    William N Grimes, Logan R Graves ... Fred Rieke
    A combination of physiological and perceptual experiments show that the responses of rod photoreceptors inhibit those of cones more than vice versa, and reveal both the site of the retinal interaction and the underlying mechanism.
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    1. Neuroscience

    Nonlinear circuits for naturalistic visual motion estimation

    James E Fitzgerald, Damon A Clark
    New computational models provide insights into how the insect brain estimates the speed and direction of movement.
    1. Neuroscience

    Brain and molecular mechanisms underlying the nonlinear association between close friendships, mental health, and cognition in children

    Chun Shen, Edmund T Rolls ... Jianfeng Feng
    Close friend quantity is nonlinearly associated with various mental health and cognitive outcomes in children and could be partly explained by the structure of the social brain and the endogenous opioid system.
    1. Neuroscience

    Distributed functions of prefrontal and parietal cortices during sequential categorical decisions

    Yang Zhou, Matthew C Rosen ... David J Freedman
    Prefrontal cortex plays a leading role in sequential decisions compared to posterior parietal cortex and relies on nonlinear integration of sensory and mnemonic information for decision formation.
    1. Neuroscience

    On the normative advantages of dopamine and striatal opponency for learning and choice

    Alana Jaskir, Michael J Frank
    A computational model of the opponent neural architecture the basal ganglia, in tandem with adaptive dopamine modulation, exhibits robust advantages over traditional learning algorithms and ties together seemingly aberrant behavioral patterns resulting from dopamine and environmental manipulations across species.

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