942 results found
    1. Neuroscience

    Synaptic and circuit mechanisms prevent detrimentally precise correlation in the developing mammalian visual system

    Ruben A Tikidji-Hamburyan, Gubbi Govindaiah ... Matthew T Colonnese
    The imprecise and broad connectivity of retinal inputs during development have the potential to generate large correlations in target neurons that reduce retinotopic information unless suppressed by the special synaptic and circuit properties present at these ages.
    1. Neuroscience

    Non-thalamic origin of zebrafish sensory nuclei implies convergent evolution of visual pathways in amniotes and teleosts

    Solal Bloch, Hanako Hagio ... Kei Yamamoto
    Mesencephalic origin of the zebrafish thalamocortical-like visual projection neurons indicates independent evolution of tectofugal visual pathways in amniotes and teleosts.
    1. Neuroscience

    Sensory experience during locomotion promotes recovery of function in adult visual cortex

    Megumi Kaneko, Michael P Stryker
    Mice that viewed a visual stimulus whilst running showed recovery of the neuronal responses that had been lost due to early visual deprivation, with potential relevance for amblyopia.
    1. Neuroscience

    A predictive focus of gain modulation encodes target trajectories in insect vision

    Steven D Wiederman, Joseph M Fabian ... David C O’Carroll
    Visual neurons in the dragonfly predict the path of a moving target, even when it is occluded or crosses from one eye to the other.
    1. Neuroscience

    A cellular mechanism for inverse effectiveness in multisensory integration

    Torrey LS Truszkowski, Oscar A Carrillo ... Carlos D Aizenman
    Building on previous work (Felch et al., 2016), it is shown that inverse effectiveness, a central property of multisensory integration, in the optic tectum is mediated by the activation of NMDA-type glutamate receptors, resulting in a response greater than the sum of responses to each individual sensory modality.
    1. Neuroscience

    Multisensory integration in the developing tectum is constrained by the balance of excitation and inhibition

    Daniel L Felch, Arseny S Khakhalin, Carlos D Aizenman
    During development, the Xenopus brain improves its ability to discern specific time intervals between sensory inputs of different modalities via the maturation of inhibitory circuits.
    1. Neuroscience

    ON selectivity in the Drosophila visual system is a multisynaptic process involving both glutamatergic and GABAergic inhibition

    Sebastian Molina-Obando, Juan Felipe Vargas-Fique ... Marion Silies
    A fundamental visual computation, the establishment of ON selectivity, is established across distributed circuits, allowing for more robust and flexible coding than suggested by core circuit motifs.
    1. Neuroscience

    Spontaneous and evoked activity patterns diverge over development

    Lilach Avitan, Zac Pujic ... Geoffrey J Goodhill
    Spontaneous and evoked patterns of neural activity in the larval zebrafish tectum become less similar over development, in contrast with a previous hypothesis for the computational role of spontaneous activity.
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    1. Neuroscience

    Perception as a closed-loop convergence process

    Ehud Ahissar, Eldad Assa
    Perception is proposed to be a dynamic motor-sensory closed-loop process in which information flows through the environment and the brain in continuous loops, converging towards steady-state percepts.
    1. Neuroscience

    Population rate-coding predicts correctly that human sound localization depends on sound intensity

    Antje Ihlefeld, Nima Alamatsaz, Robert M Shapley
    Softer sound appears closer to midline than louder sound, conflicting with a labelled-line representation of auditory space and supporting the idea that humans use rate coding when calculating sound directionality.

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