598 results found
    1. Neuroscience

    Auditory cortex shapes sound responses in the inferior colliculus

    Jennifer M Blackwell, Alexandria MH Lesicko ... Maria N Geffen
    Feedback from the mammalian auditory cortex to the midbrain decreases sound selectivity, altering how sounds are processed in the brain.
    1. Neuroscience

    Experience-dependent flexibility in a molecularly diverse central-to-peripheral auditory feedback system

    Michelle M Frank, Austen A Sitko ... Lisa V Goodrich
    Single-nucleus sequencing, anatomy, and physiology reveal heterogeneity among olivocochlear neurons (a group of cells that provide feedback to the inner ear), identify a neuropeptide-enriched subtype, and show that neuropeptide expression changes during postnatal development and after sound exposure.
    1. Neuroscience

    A single exposure to altered auditory feedback causes observable sensorimotor adaptation in speech

    Lana Hantzsch, Benjamin Parrell, Caroline A Niziolek
    Hearing a single auditory error while speaking causes an adaptive change that corrects for that error the next time we say a word, providing empirical support for current models of speech sensorimotor adaptation and aligning speech with other motor domains.
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    1. Neuroscience

    Sound exposure dynamically induces dopamine synthesis in cholinergic LOC efferents for feedback to auditory nerve fibers

    Jingjing Sherry Wu, Eunyoung Yi ... Elisabeth Glowatzki
    Based on the animal’s recent history of sound exposure, cholinergic auditory brainstem neurons dynamically regulate dopamine synthesis for inhibitory feedback to the inner ear.
    1. Neuroscience

    Auditory synapses to song premotor neurons are gated off during vocalization in zebra finches

    Kosuke Hamaguchi, Katherine A Tschida ... Richard Mooney
    Intracellular recordings in singing birds and images of synapses in deafened birds provide insights into the neural circuitry that enables songbirds to fine-tune their songs.
    1. Neuroscience

    Corticofugal regulation of predictive coding

    Alexandria MH Lesicko, Christopher F Angeloni ... Maria N Geffen
    A specific neuronal pathway within the auditory system represents information about the statistical prediction and error for incoming sounds, thereby contributing to efficient representation of complex sounds and sound streams in the brain.
    1. Neuroscience

    Shared mechanisms of auditory and non-auditory vocal learning in the songbird brain

    James N McGregor, Abigail L Grassler ... Samuel J Sober
    A novel, non-auditory learning paradigm reveals that songbirds can modify their vocal output based on somatosensory signals and that a common set of brain pathways underlies both this form of vocal learning and auditory-guided vocal learning.
    1. Neuroscience

    Timing of the reticular lamina and basilar membrane vibration in living gerbil cochleae

    Wenxuan He, David Kemp, Tianying Ren
    Heterodyne low-coherence interferometry demonstrates that the latency of the sound-induced reticular lamina vibration is significantly greater than that of the basilar membrane vibration in living gerbil cochleae.
    1. Neuroscience

    A role for descending auditory cortical projections in songbird vocal learning

    Yael Mandelblat-Cerf, Liora Las ... Michale S Fee
    Midbrain dopaminergic neurons and a cortex-like structure called the arcopallium form part of a circuit that enables young songbirds to compare their own song with a template stored in memory, and use any discrepancies to improve their performance.
    1. Neuroscience

    Synaptic mechanisms of top-down control in the non-lemniscal inferior colliculus

    Hannah M Oberle, Alexander N Ford ... Pierre F Apostolides
    Optogenetic and electrophysiological experiments show how a behaviorally relevant 'feedback' pathway from auditory cortex controls neural activity in the inferior colliculus, an auditory midbrain region important for processing complex time-varying sounds such as speech.

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