Neuroscience

eLife Assessment

Following retinal injury, zebrafish Müller glia reenter the cell cycle and generate replacement cells; this potentially valuable study proposes that injury induces a cxcl18b+ transitional state in Müller cells, which then express nitric oxide, inhibiting notch signaling and allowing Müller glial to reenter the cell cycle. However, the evidence supporting the claims is incomplete; technical limitations and inconsistencies within the data raise concerns. Using larval animals complicates the analysis since the retina is still forming, and distinguishing between injury-induced regeneration and ongoing development is complex. With more rigorous testing of the signaling pathways proposed and a clear demonstration of their interdependence, the link between nitric oxide signaling and Notch activity, particularly, would interest those investigating retinal regeneration.

eLife Assessment

The authors employ an unbiased, affinity-guided reagent to label P2X7 receptor and use super-resolution imaging to monitor P2X7 redistribution in response to inflammatory signaling. The evidence is generally solid but could be further strengthened through revisions. The study will be valuable to those studying the dynamics of receptor distribution and clustering.

eLife Assessment

This valuable study investigates neural circuits mediating motor responses to cold in Drosophila larvae. Using a combination of behavioral analysis, genetic manipulations, EM connectomics, and reporters of calcium activity, the authors provide solid evidence that specific sensory and central neurons are required for cold-induced body contraction. This paper may be of interest to neuroscientists interested in how nervous systems sense and respond to cold.

eLife Assessment

This manuscript demonstrates that Oct4 overexpression synergizes with Notch inhibition (Rbpj knockout) to promote the conversion of adult murine Müller glia (MG) into bipolar cells. These findings are important as the authors used rigorous genetic lineage tracing (GLAST-CreER; Sun-GFP) to confirm that neurogenesis indeed originates from MGs, addressing a key issue in the field. The single-cell multiomic analyses are compelling, and while functional studies of MG-derived bipolar cells would strengthen the conclusions, they are beyond the scope of this study.

eLife Assessment

This important work uses an innovative approach to understand similarities between haemodynamic and electrophysiological activity of the human brain, and how the brain might carry out multiple functions concurrently across different brain regions by using multiple timescales. The study provides convincing evidence to indicate that while spatially similar functional brain networks are found in both modalities, there is a tendency for these to occur asynchronously. This work will be of interest to neurophysiological and brain imaging researchers.

eLife Assessment

This study provides valuable insights into the role of sensory stimulation in neurogenesis in the mammalian olfactory epithelium, where new olfactory sensory neurons are continually born throughout an animal's lifespan. The authors show that exposure to two different musk-related odors specifically increases the birth rates of those neurons that respond to these odors. This potentially results in adaptive changes in the subtype composition of the olfactory sensory neuron population. Solid evidence, well supported by control experiments, is presented to support these findings, though further work is needed to confirm that this phenomenon generalizes to olfactory sensory neurons expressing other types of odorant receptor and to explore the mechanisms underlying the stimulus specificity of neurogenesis.

eLife Assessment

This valuable study combines a computational language model, i.e., HM-LSTM, and temporal response function (TRF) modeling to quantify the neural encoding of hierarchical linguistic information in speech, and addresses how hearing impairment affects neural encoding of speech. The analysis has been significantly improved during the revision but remain somewhat incomplete - The TRF analysis should be more clearly described and controlled. The study is of potential interest to audiologists and researchers who are interested in the neural encoding of speech.

eLife Assessment

This valuable study investigates both online responses to, and offline replay of, visual motion sequences. Sophisticated MEG analyses provide convincing evidence for both feature-specific and non-specific sequence representations. These intriguing findings will be of interest to perception and learning researchers alike.

eLife Assessment

This study proposes an updated analysis technique that allows researchers to identify rhythms in behavior. If the proposed analyses control the rate of false positives, this will be an important contribution for all neuroscientists interested in rhythmic cognition. At present, the strength of evidence is incomplete, as the simulations ignore one crucial aspect of temporal structure in behavior.

eLife Assessment

This important study by Jeong and Choi studied neural activity in the medial prefrontal cortex (mPFC) while rats performed a foraging paradigm in which they forage for rewards in the absence or presence of a threatening object (Lobsterbot). The authors present interesting observations suggesting that the mPFC population activity switches between distinct functional modes conveying distinct task variables- such as the distance to the reward location and types of threat-avoidance behaviors-depending on the location of the animal. Although the specific information represented by individual neurons remains to be clarified through further investigation, the reviewers thought that this study is solid, appreciated the value of studying neural coding in naturalistic settings, and felt that this work offers significant insights into how the mPFC operates during foraging behavior involving reward-threat conflict.