Proneural lineage identity is the primary determinant of embryonic synchrony patterns in the developing hindbrain

Proneural gene expression in zebrafish hindbrain progenitors hardwires whether emerging neurons show synchrony or asynchrony, with activity patterns predicted by progenitor identity.

• Why it matters: It addresses whether stem cell origin shapes how daughter neurons acquire functional modes, and how embryonic progenitor identity links to neuronal diversity and network activity.
• What they did: Using intersectional lineage tracing, multimodal lineage reconstruction with new computational tools, and genetic knockouts, the study mapped how different proneural progenitor pools generate glutamatergic and GABAergic subtypes over developmental time.
• The result: Whole-hindbrain 3D calcium imaging with genetic perturbations and progenitor origin showed that the emergence of neuronal activity patterns is presaged by progenitor identity, linking ontogeny to synchrony/asynchrony in the zebrafish hindbrain.

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