Neuroscience

eLife Assessment

This study presents convincing evidence of the role of an intestine-released neuropeptide, FLP-2, in the oxidative stress response of C. elegans, as well as for the neural circuit pathway that regulates its release in response to sensing reactive oxygen species (i.e., H2O2). These valuable results advance the understanding of gut-brain signaling and the neural circuit basis of behavioral responses to stress.

eLife Assessment

This study used a novel continuous dot motion decision-making task to measure participants' perception and uncertainty/confidence in a social context. The social element is that participants can see another player's responses as well as their own. The study is a useful contribution to social decision-making primarily by introducing a new task and offering solid evidence on how participants are impacted by others' decisions during continuous perceptual choices. The manuscript could be improved through streamlining, more consistent use of terms such as "dyadic" and clarification about the differences between primary uncertainty and metacognitive confidence.

eLife Assessment

This study presents a valuable finding on the molecular mechanisms that govern GABAergic inhibitory synapse function. The authors propose that Endophilin A1 serves as a novel regulator of GABAergic synapses by acting as a component of the inhibitory postsynaptic density. Although the study employs a variety of approaches to address this question, the current analysis is incomplete and requires further experiments to substantiate the claims fully. The findings are likely to interest a broad audience of scientists focusing on inhibitory synaptic transmission, the excitation-inhibition balance, and its disruption in disorders such as epilepsy.

eLife Assessment

Computational simulation of neuron function depends on a collection of morphological properties and ion channel biophysics. This manuscript introduces DendroTweaks, a useful web application and Python library that, compared to existing modeling tools, eases interactive graphical exploration, development, and validation of single-neuron models. The authors provide a convincing demonstration that their software aids with building intuition and rapid prototyping of biophysical models of neurons, which improves the accessibility of dendritic simulation.

eLife Assessment

This study provides important insights into the question of how interacting brain areas produce behaviour during the execution of a skilled multi-directional reaching task. Using a combination of single neuron and neural population analysis, as well as optogenetic stimulation and computational models, the authors provide solid evidence of an asymmetrical influence between mouse premotor and motor cortex during the execution of a well-practiced behaviour. This asymmetry can only be captured by some but not all population analysis methods, which is a key lesson to the field in and of itself. Analyzing how activity that is shared and private to these areas relates to different aspects of movements, and linking the model predictions to the actual data, would further strengthen this work.

eLife Assessment

This important paper takes a novel approach to the problem of automatically reconstructing long-range axonal projections from stacks of images. The key innovation is to separate the identification of sections of an axon from the statistical rules used to constrain global structure. The authors provide convincing evidence that their method is a significant improvement over existing measures in circumstances where the labelling of axons and dendrites is relatively dense, but the robustness to image noise remains to be tested.

eLife Assessment

This study is part of an ongoing effort to clarify the effects of cochlear neural degeneration on auditory processing in listeners with normal audiograms. Here the authors provide important new data demonstrating associations between cochlear neural degeneration, non-invasive assays of auditory processing, and speech perception. Based on a cross-species comparison, these findings pose compelling evidence that cochlear synaptopathy is associated with a significant part of hearing difficulties in complex environments for some listeners with normal hearing thresholds, such as older individuals.

eLife Assessment

This study presents a valuable finding that altruistic tendency during moral decision-making is context-dependent (present in the gain domain but absent in the loss domain) and its absence in the loss domain can be restored by the neuropeptide oxytocin. However, the evidence supporting this claim is somewhat incomplete and would benefit from better overall framing and clarity on its approaches. Overall, this study will be of interest to social scientists and neuroscientists who work on moral decision-making and oxytocin.

eLife Assessment

The central claim in this valuable manuscript is that microglia in the PVH sculpt the density of AgRP inputs to the PVH in a spatially restricted manner. The anatomical results are solid but the analysis of how microglia activity affects body weight when lactating dams are fed a high-fat diet is incomplete.

eLife Assessment

This study provides useful information on the potential role of ERbB4 expression in parvalbumin-positive cells on olfactory behaviour and circuit dynamics in the olfactory bulb. The question is timely and novel, and findings could shed light on the critical role that ErbB4 may play in modulating olfactory bulb cell function and olfactory perception. Although the authors use a comprehensive set of experiments for their analysis, the evidence is incomplete as many of the experiments are underpowered and the model for selective knockout of ErbB4 in olfactory parvalbumin cells is not validated.