ArticleFrontiers in neural circuits2014
Functional imaging of cortical feedback projections to the olfactory bulb.
Article in Frontiers in neural circuits, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers.
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Who cites it
62 citing papers in PubMed, 89 citations in OpenAlex.
- Target-dependent routing of sensory information in the olfactory system.Communications biology · 2026Article
- Evidence that interglomerular inhibition generates non-monotonic concentration-response relationships in mitral/tufted glomeruli in the mouse olfactory bulb.The Journal of physiology · 2026Article
- Article
- Early and Late Phases of Sensory-Evoked Olfactory Bulb Inhibition Are Mediated by Parallel Local Circuits: Attenuation of Fast Tufted Cell Axo-dendritic Inputs to Granule Cells by Adenosine A1 Receptors.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026Article
- Nasal respiration modulates pain perception via the olfactory Bulb-Anterior cingulate cortex circuit.iScience · 2025Article
- Evidence that interglomerular inhibition generates non-monotonic concentration-response relationships in mitral/tufted glomeruli in the mouse olfactory bulb.bioRxiv : the preprint server for biology · 2025Article
- Fast updating feedback from piriform cortex to the olfactory bulb relays multimodal identity and reward contingency signals during rule-reversal.Nature communications · 2025Article
- Dense and Persistent Odor Representations in the Olfactory Bulb of Awake Mice.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024Article
- Common principles for odour coding across vertebrates and invertebrates.Nature reviews. Neuroscience · 2024Review
- Imaging different cell populations in the mouse olfactory bulb using the genetically encoded voltage indicator ArcLight.Neurophotonics · 2024Review
- Signaling mechanisms underlying activity-dependent integration of adult-born neurons in the mouse olfactory bulb.Genesis (New York, N.Y. : 2000) · 2024Review
- Fast updating feedback from piriform cortex to the olfactory bulb relays multimodal reward contingency signals during rule-reversal.bioRxiv : the preprint server for biology · 2023Article
- Conserved neural dynamics and computations across species in olfaction.bioRxiv : the preprint server for biology · 2023Article
- Appetite-regulating hormones modulate odor perception and odor-evoked activity in hypothalamus and olfactory cortices.Chemical senses · 2023Article
- Long-range functional loops in the mouse olfactory system and their roles in computing odor identity.Neuron · 2022Article
- Olfactory Information Storage Engages Subcortical and Cortical Brain Regions That Support Valence Determination.Cerebral cortex (New York, N.Y. : 1991) · 2022Article
- Connectivity and dynamics in the olfactory bulb.PLoS computational biology · 2022Article
- Cortical feedback and gating in odor discrimination and generalization.PLoS computational biology · 2021Article
- Changes in pairwise correlations during running reshape global network state in the main olfactory bulb.Journal of neurophysiology · 2021Article
- Long-Range GABAergic Inhibition Modulates Spatiotemporal Dynamics of the Output Neurons in the Olfactory Bulb.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021Article
2 more citing papers are in PubMed but not listed here.
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2 authors at 1 institution in 1 country.
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Abstract
Processing of sensory information is substantially shaped by centrifugal, or feedback, projections from higher cortical areas, yet the functional properties of these projections are poorly characterized. Here, we used genetically-encoded calcium sensors (GCaMPs) to functionally image activation of centrifugal projections targeting the olfactory bulb (OB). The OB receives massive centrifugal input from cortical areas but there has been as yet no characterization of their activity in vivo. We focused on projections to the OB from the anterior olfactory nucleus (AON), a major source of cortical feedback to the OB. We expressed GCaMP selectively in AON projection neurons using a mouse line expressing Cre recombinase (Cre) in these neurons and Cre-dependent viral vectors injected into AON, allowing us to image GCaMP fluorescence signals from their axon terminals in the OB. Electrical stimulation of AON evoked large fluorescence signals that could be imaged from the dorsal OB surface in vivo. Surprisingly, odorants also evoked large signals that were transient and coupled to odorant inhalation both in the anesthetized and awake mouse, suggesting that feedback from AON to the OB is rapid and robust across different brain states. The strength of AON feedback signals increased during wakefulness, suggesting a state-dependent modulation of cortical feedback to the OB. Two-photon GCaMP imaging revealed that different odorants activated different subsets of centrifugal AON axons and could elicit both excitation and suppression in different axons, indicating a surprising richness in the representation of odor information by cortical feedback to the OB. Finally, we found that activating neuromodulatory centers such as basal forebrain drove AON inputs to the OB independent of odorant stimulation. Our results point to the AON as a multifunctional cortical area that provides ongoing feedback to the OB and also serves as a descending relay for other neuromodulatory systems.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.