Neuroscience

eLife assessment

The study presents a valuable finding in advancing our understanding of the cellular and molecular mechanisms that regulate the switching of the migration mode from parallel to radial in cerebellar granule cell development. The evidence supporting the claims of the authors is solid and supports the main conclusion; the highlight was the imaging system's visualization of the cell-recognition event associated with neuronal migration, which established a new standard for the field. This study would be of interest to cell biologists and neurodevelopmental biologists working on cell-cell interaction and neuronal migration.

eLife assessment

This is an important and timely study that advances our understanding of the role of lateral hypothalamic orexin/hypocretin neurons in appetitive approach and consummatory behaviors. Specifically, using fiber photometry, the authors provide solid and convincing evidence that orexin neurons are primarily active during approach and not consummatory behavior, in a manner that is dependent on metabolic state. Further, using optogenetics and cell type-specific electrophysiology, they show that inputs from the ventral pallidum and lateral nucleus accumbens shell to orexin/hypocretin neurons in the lateral hypothalamus are predominantly inhibitory.

eLife assessment

This study provides important information about the formation of ribbon synapses in mouse cochlear hair cells, which facilitate the temporally-precise transmission of acoustic information to the auditory nerve. Live-cell imaging provides compelling evidence that ribbon precursor volume is dynamically modified by fission and fusion events on microtubules, but some of the other evidence included, particularly in relation to the directed transport of these precursors to the hair cell active zone is incomplete. These findings will be of interest to neuroscientists studying synapse formation and function and should inspire further research into the molecular basis for synaptic ribbon maturation.