ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2010
Developmental regulation of spontaneous activity in the Mammalian cochlea.
Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 150 papers.
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Who cites it
150 citing papers in PubMed, 233 citations in OpenAlex.
- Triggered Calcium Lightning Programs Cochlear Development.Exploration (Beijing, China) · 2026Article
- Upregulation of ATP-purinergic P2×2 receptors in the cochlea over-amplifies hearing sensitivity leading to hyperacusis and attenuation by antagonists.bioRxiv : the preprint server for biology · 2026Article
- Spontaneous Calcium Signalling in the Developing Mammalian Cochlea.Journal of the Association for Research in Otolaryngology : JARO · 2026Review
- Activity and retinoic acid drive hair cell spatial patterning in the zebrafish utricle.Development (Cambridge, England) · 2026Article
- Adeno-associated virus-based rescue of Myo7a expression restores hair-cell function and improves hearing thresholds in a USH1B mouse strain.The Journal of physiology · 2025Article
- Strengthening Medial Olivocochlear Feedback Reduces the Developmental Impact of Early Noise Exposure.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025Article
- Strengthening Medial Olivocochlear Feedback Reduces the Developmental Impact of Early Noise Exposure.bioRxiv : the preprint server for biology · 2025Article
- [Mechanisms of enhanced noise susceptibility in waardenburg syndromeLin chuang er bi yan hou tou jing wai ke za zhi = Journal of clinical otorhinolaryngology head and neck surgery · 2025Article
- Kolliker's Organ and Its Functional Role in the Development of Corti's Organ and Auditory Systems.Audiology research · 2025Review
- Auditory evoked delta brushes involve stimulus-specific cortical networks in preterm infants.iScience · 2025Article
- A Neuroelectronic Interface with Microstructured Substrates for Spiral Ganglion Neurons Cultured In Vitro: Proof of Concept.Biosensors · 2025Article
- Kölliker's Organ Functions as a Developmental Hub in Mouse Cochlea Regulating Spiral Limbus and Tectorial Membrane Development.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025Article
- Expression Patterns of Cav1.3 in the Developing Stria Vascularis of Sprague-Dawley Rats.The journal of international advanced otology · 2025Article
- In vivo spontaneous CaNature communications · 2025Article
- Mechanisms driving the functional maturation of the developing mammalian auditory pathway.Current topics in developmental biology · 2025Review
- Noise induces Ca2+ signaling waves and Chop/S-Xbp1 expression in the hearing cochlea.JCI insight · 2024Article
- Auditory hair cells and spiral ganglion neurons regenerate synapses with refined release properties in vitro.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Priming central sound processing circuits through induction of spontaneous activity in the cochlea before hearing onset.Trends in neurosciences · 2024Review
- Calcium Regulation of Connexin Hemichannels.International journal of molecular sciences · 2024Review
- Damage-evoked signals in cochlear neurons and supporting cells.Frontiers in neurology · 2024Review
90 more citing papers are in PubMed but not listed here.
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
Abstract
Neurons in the developing auditory system fire bursts of action potentials before the onset of hearing. This spontaneous activity promotes the survival and maturation of auditory neurons and the refinement of synaptic connections in auditory nuclei; however, the mechanisms responsible for initiating this activity remain uncertain. Previous studies indicate that inner supporting cells (ISCs) in the developing cochlea periodically release ATP, which depolarizes inner hair cells (IHCs), leading to bursts of action potentials in postsynaptic spiral ganglion neurons (SGNs). To determine when purinergic signaling appears in the developing cochlea and whether it is responsible for initiating auditory neuron activity throughout the prehearing period, we examined spontaneous activity from ISCs, IHCs, and SGNs in cochleae acutely isolated from rats during the first three postnatal weeks. We found that ATP was released from ISCs within the cochlea from birth until the onset of hearing, which led to periodic inward currents, Ca(2+) transients, and morphological changes in these supporting cells. This spontaneous release of ATP also depolarized IHCs and triggered bursts of action potentials in SGNs for most of the postnatal prehearing period, beginning a few days after birth as IHCs became responsive to ATP, until the onset of hearing when ATP was no longer released from ISCs. When IHCs were not subject to purinergic excitation, SGNs exhibited little or no activity. These results suggest that supporting cells in the cochlea provide the primary excitatory stimulus responsible for initiating bursts of action potentials in auditory nerve fibers before the onset of hearing.
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