Neuronal wiring diagram of an adult brain

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2023, Номер unknown

Опубликована: Июнь 30, 2023

Abstract Connections between neurons can be mapped by acquiring and analyzing electron microscopic (EM) brain images. In recent years, this approach has been applied to chunks of brains reconstruct local connectivity maps that are highly informative, yet inadequate for understanding function more globally. Here, we present the first neuronal wiring diagram a whole adult brain, containing 5×10 7 chemical synapses ∼130,000 reconstructed from female Drosophila melanogaster . The resource also incorporates annotations cell classes types, nerves, hemilineages, predictions neurotransmitter identities. Data products available download, programmatic access, interactive browsing made interoperable with other fly data resources. We show how derive projectome, map projections regions, connectome. demonstrate tracing synaptic pathways analysis information flow inputs (sensory ascending neurons) outputs (motor, endocrine, descending neurons), across both hemispheres, central optic lobes. Tracing subset photoreceptors all way motor illustrates structure uncover putative circuit mechanisms underlying sensorimotor behaviors. technologies open ecosystem FlyWire Consortium set stage future large-scale connectome projects in species.

Язык: Английский

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Connectome-driven neural inventory of a complete visual system

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Апрель 18, 2024

Vision provides animals with detailed information about their surroundings, conveying diverse features such as color, form, and movement across the visual scene. Computing these parallel spatial requires a large network of neurons, that in distant flies humans, regions comprise half brain's volume. These brain often reveal remarkable structure-function relationships, neurons organized along maps shapes directly relate to roles processing. To unravel stunning diversity complex system, careful mapping neural architecture matched tools for targeted exploration circuitry is essential. Here, we report new connectome right optic lobe from male Drosophila central nervous system FIB-SEM volume comprehensive inventory fly's neurons. We developed computational framework quantify anatomy establishing basis interpreting how vision. By integrating this analysis connectivity information, neurotransmitter identity, expert curation, classified ~53,000 into 727 types, which are systematically described named first time. Finally, share an extensive collection split-GAL4 lines our neuron type catalog. Together, set data unlock possibilities systematic investigations vision Drosophila, foundation deeper understanding sensory

Язык: Английский

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Neuronal parts list and wiring diagram for a visual system

Nature, Год журнала: 2024, Номер 634(8032), С. 166 - 180

Опубликована: Окт. 2, 2024

Язык: Английский

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Connectome-driven neural inventory of a complete visual system

Nature, Год журнала: 2025, Номер unknown

Опубликована: Март 26, 2025

Abstract Vision provides animals with detailed information about their surroundings and conveys diverse features such as colour, form movement across the visual scene. Computing these parallel spatial requires a large network of neurons. Consequently, from flies to humans, regions in brain constitute half its volume. These often have marked structure–function relationships, neurons organized along maps shapes that directly relate roles processing. More than century anatomical studies catalogued detail cell types fly systems 1–3 , behavioural physiological experiments examined capabilities flies. To unravel diversity complex system, careful mapping neural architecture matched tools for targeted exploration this circuitry is essential. Here we present connectome right optic lobe male Drosophila melanogaster acquired using focused ion beam milling scanning electron microscopy. We established comprehensive inventory developed computational framework quantify anatomy. Together, data establish basis interpreting how vision. By integrating analysis connectivity information, neurotransmitter identity expert curation, classified approximately 53,000 into 732 types. are systematically described newly named. Finally, share an extensive collection split-GAL4 lines our neuron-type catalogue. Overall, set unlocks new possibilities systematic investigations vision foundation deeper understanding sensory

Язык: Английский

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The Neuronal Circuit of the Dorsal Circadian Clock Neurons in Drosophila melanogaster

Frontiers in Physiology, Год журнала: 2022, Номер 13

Опубликована: Апрель 29, 2022

Drosophila's dorsal clock neurons (DNs) consist of four clusters (DN1as, DN1ps, DN2s, and DN3s) that largely differ in size. While the DN1as DN2s encompass only two neurons, DN1ps ∼15 DN3s comprise ∼40 per brain hemisphere. In comparison to well-characterized lateral (LNs), neuroanatomy function DNs are still not clear. Over past decade, numerous studies have addressed their role fly's circadian system, leading several sometimes divergent results. Nonetheless, these agreed important fine-tune activity under light temperature cycles play essential roles linking output from LNs downstream control sleep metabolism. Here, we used Flybow specific split-GAL4 lines, trans-Tango, recently published fly connectome (called hemibrain) describe morphology greater detail, including synaptic connections other non-clock neurons. We show some DN groups heterogenous. certain strongly connected with LNs, others mainly signal circuits clock. Among latter mushroom body central complex tubercle bulb neurosecretory cells pars intercerebralis, unidentified partners. This heterogeneity may explain conflicting results previously found about functionality. Most importantly, identify putative novel communication centers network: one fiber bundle superior protocerebrum running toward anterior optic hub posterior protocerebrum. Both invaded by might an instrumental network.

Язык: Английский

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Visual processing in the fly, from photoreceptors to behavior

Genetics, Год журнала: 2023, Номер 224(2)

Опубликована: Май 2, 2023

Abstract Originally a genetic model organism, the experimental use of Drosophila melanogaster has grown to include quantitative behavioral analyses, sophisticated perturbations neuronal function, and detailed sensory physiology. A highlight these developments can be seen in context vision, where pioneering studies have uncovered fundamental generalizable principles processing. Here we begin with an overview vision-guided behaviors common methods for probing visual circuits. We then outline anatomy physiology brain regions involved processing, beginning at periphery ending descending motor control. Areas focus contrast motion detection optic lobe, circuits feature selectivity, computations support spatial navigation, contextual associative learning. Finally, look future fly neuroscience discuss promising topics further study.

Язык: Английский

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A split-GAL4 driver line resource forDrosophilaneuron types

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Янв. 10, 2024

Abstract Techniques that enable precise manipulations of subsets neurons in the fly central nervous system have greatly facilitated our understanding neural basis behavior. Split-GAL4 driver lines allow specific targeting cell types Drosophila melanogaster and other species. We describe here a collection 3060 range adult 1373 characterized third-instar larvae. These tools functional, transcriptomic, proteomic studies based on anatomical targeting. NeuronBridge search relate light microscopy images these split-GAL4 to connectomes reconstructed from electron images. The collections are result screening over 77,000 split hemidriver combinations. Previously published new included, all validated for expression curated optimal type specificity across diverse types. In addition stocks well-characterized lines, we make available 300,000 3D lines.

Язык: Английский

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Synaptic connectome of the Drosophila circadian clock

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Дек. 5, 2024

Abstract The circadian clock and its output pathways play a pivotal role in optimizing daily processes. To obtain insights into how diverse rhythmic physiology behaviors are orchestrated, we have generated comprehensive connectivity map of an animal using the Drosophila FlyWire brain connectome. Intriguingly, identified additional dorsal neurons, thus showing that network contains ~240 instead 150 neurons. We revealed extensive contralateral synaptic within discovered novel indirect light input to also elucidated via which modulates descending neurons known regulate feeding reproductive behaviors. Interestingly, observed sparse monosynaptic between downstream higher-order centers neurosecretory cells behavior physiology. Therefore, integrated single-cell transcriptomics receptor mapping decipher putative paracrine peptidergic signaling by Our analyses neuropeptides expressed suggest significantly enriches interconnectivity network.

Язык: Английский

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Temporal and Notch identity determine layer targeting and synapse location of medulla neurons

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2025, Номер unknown

Опубликована: Янв. 6, 2025

How specification mechanisms that generate neural diversity translate into specific neuronal targeting, connectivity, and function in the adult brain is not understood. In medulla region of Drosophila optic lobe, progenitors different neurons a fixed order by sequentially expressing series temporal transcription factors as they age. Then, Notch signaling intermediate further diversifies progeny. By establishing birth neurons, we found their identity correlates with depth neuropil targeting brain, for both local interneurons projection neurons. We show this identity-dependent unfolds early development genetically determined. leveraging Electron Microscopy reconstruction fly determined synapse location lobe neuropils find it significantly associated status. Moreover, all putative same predicted share similar location, indicating ensembles layers encode visual functions. conclusion, status can predict function, linking developmental patterning connectivity functional features brain.

Язык: Английский

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A split-GAL4 driver line resource for Drosophila neuron types

eLife, Год журнала: 2025, Номер 13

Опубликована: Янв. 24, 2025

Techniques that enable precise manipulations of subsets neurons in the fly central nervous system (CNS) have greatly facilitated our understanding neural basis behavior. Split-GAL4 driver lines allow specific targeting cell types Drosophila melanogaster and other species. We describe here a collection 3060 range adult CNS 1373 characterized third-instar larvae. These tools functional, transcriptomic, proteomic studies based on anatomical targeting. NeuronBridge search relate light microscopy images these split-GAL4 to connectomes reconstructed from electron images. The collections are result screening over 77,000 split hemidriver combinations. Previously published new included, all validated for expression curated optimal cell-type specificity across diverse types. In addition stocks well-characterized lines, we make available 300,000 3D lines.

Язык: Английский

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