ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2017
Direct Recording of Dendrodendritic Excitation in the Olfactory Bulb: Divergent Properties of Local and External Glutamatergic Inputs Govern Synaptic Integration in Granule Cells.
Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed.
- 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
- Fast-spiking interneuron detonation drives high-fidelity inhibition in the olfactory bulb.PLoS biology · 2024Article
- Fast-spiking interneuron detonation drives high-fidelity inhibition in the olfactory bulb.bioRxiv : the preprint server for biology · 2024Article
- Distinct information conveyed to the olfactory bulb by feedforward input from the nose and feedback from the cortex.Nature communications · 2024Article
- Anatomical and Functional Connectivity at the Dendrodendritic Reciprocal Mitral Cell-Granule Cell Synapse: Impact on Recurrent and Lateral Inhibition.Frontiers in neural circuits · 2022Article
- Cortical feedback and gating in odor discrimination and generalization.PLoS computational biology · 2021Article
- Olfactory bulb granule cells: specialized to link coactive glomerular columns for percept generation and discrimination of odors.Cell and tissue research · 2021Article
- Modulation of Neural Microcircuits That Control Complex Dynamics in Olfactory Networks.Frontiers in cellular neuroscience · 2021Article
- An Evolutionary Microcircuit Approach to the Neural Basis of High Dimensional Sensory Processing in Olfaction.Frontiers in cellular neuroscience · 2021Article
- Activation of Granule Cell Interneurons by Two Divergent Local Circuit Pathways in the Rat Olfactory Bulb.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2020Article
- Article
- Context-dependent plasticity of adult-born neurons regulated by cortical feedback.Science advances · 2020Article
- Dendritic integration in olfactory bulb granule cells upon simultaneous multispine activation: Low thresholds for nonlocal spiking activity.PLoS biology · 2020Article
- Predicting brain organization with a computational model: 50-year perspective on lateral inhibition and oscillatory gating by dendrodendritic synapses.Journal of neurophysiology · 2020Review
- A Synaptic Circuit Required for Acquisition but Not Recall of Social Transmission of Food Preference.Neuron · 2020Article
- A17 Amacrine Cells and Olfactory Granule Cells: Parallel Processors of Early Sensory Information.Frontiers in cellular neuroscience · 2020Review
- Improved Separation of Odor Responses in Granule Cells of the Olfactory Bulb During Odor Discrimination Learning.Frontiers in cellular neuroscience · 2020Article
- Complex neural representation of odour information in the olfactory bulb.Acta physiologica (Oxford, England) · 2020Review
- A Systematic Framework for Olfactory Bulb Signal Transformations.Frontiers in computational neuroscience · 2020Article
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2 authors.
Funding
Abstract
The olfactory bulb contains excitatory principal cells (mitral and tufted cells) that project to cortical targets as well as inhibitory interneurons. How the local circuitry in this region facilitates odor-specific output is not known, but previous work suggests that GABAergic granule cells plays an important role, especially during fine odor discrimination. Principal cells interact with granule cells through reciprocal dendrodendritic connections that are poorly understood. While many studies examined the GABAergic output side of these reciprocal connections, little is known about how granule cells are excited. Only two previous studies reported monosynaptically coupled mitral/granule cell connections and neither attempted to determine the fundamental properties of these synapses. Using dual intracellular recordings and a custom-built loose-patch amplifier, we have recorded unitary granule cell EPSPs evoked in response to mitral cell action potentials in rat (both sexes) brain slices. We find that the unitary dendrodendritic input is relatively weak with highly variable release probability and short-term depression. In contrast with the weak dendrodendritic input, the facilitating cortical input to granule cells is more powerful and less variable. Our computational simulations suggest that dendrodendritic synaptic properties prevent individual principal cells from strongly depolarizing granule cells, which likely discharge in response to either concerted activity among a large proportion of inputs or coactivation of a smaller subset of local dendrodendritic inputs with coincidence excitation from olfactory cortex. This dual-pathway requirement likely enables the sparse mitral/granule cell interconnections to develop highly odor-specific responses that facilitate fine olfactory discrimination.
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