Neuroscience

eLife Assessment

This important study aims to understand the role of endothelial cell differentiation into pericytes in the restoration of blood-brain barrier function after ischemic stroke. Identification of pericytes derived from endothelial cells and the involvement of myeloid cell-derived TGFβ1 signaling are compelling new findings, but future studies will be needed to validate the origin and nature of these pericytes. The work will be of interest to blood-brain barrier and basic and translational stroke researchers.

eLife Assessment

This paper provides a useful systematic quantification of the relationship between electrophysiological response properties of single neurons with their position in the brain. The quality of the classification setup is high and the methodology is solid.

eLife Assessment

This valuable study proposes a network implementation of the "re-aiming" learning strategy, which has been hypothesized to underlie brain-computer interface learning. Combining theoretical arguments, numerical simulations, and analysis of experimental data, the authors provide convincing evidence for their hypothesis. This paper will likely be of broad interest to the systems neuroscience community.

eLife Assessment

This study provides important insights as to how interacting brain areas produce movement during the execution of a skilled multi-directional reaching task. Using a combination of single neuron and neural population analysis, optogenetic stimulation, and computational models, the authors provide convincing 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 why different methods provide different outcomes regarding the nature of inter-area interactions would further strengthen this work.

eLife Assessment

Oor and colleagues report the potentially independent effects of the spatial and feature-based selection history on visuomotor choices. They outline compelling evidence, tracking the dynamic history effects based on their extremely clever experimental design (urgent version of the search task). Their finding is of fundamental significance, broadening the framework to identify variables contributing to choice behavior and their neural correlates in future studies.

eLife Assessment

This manuscript provides fundamental new insight into the mechanisms linking photoperiod, reproduction function, and feeding activity, using medaka, a genetic model that itself exhibits photoperiodic responses. As well as identifying key neuropeptide genes that are regulated by photoperiod and involved in regulating feeding activity, the authors establish a knockout line for agrp1 using CRISPR Cas9 - based approach, profiting from the extensive use and development on this methodology in medaka. The combination of the RNAseq and quantitative in situ hybridization analysis with the knockout results as well as the study of ovariectomized fish provides compelling evidence implicating agrp1 in feeding regulation in response to photoperiod and reproductive status.

eLife Assessment

TDP-43 mislocalization is a key feature of some neurodegenerative diseases, but cellular models are lacking. The authors endogenously-tagged TDP-43 with a C-terminal GFP tag in human iPSCs, followed by expression of an intrabody-NES that targeted GFP to the cytosol. They convincingly report physical mislocalization and functional depletion of TDP-43, as measured by microscopy and RNAseq. This method will be valuable to investigators studying the biological consequences of TDP-43 mislocalization and the methodology is in line with the current state-of-the-art.

eLife Assessment

These are valuable findings for those interested in how neural signals reflect auditory speech streams, and in understanding the roles of prediction, attention, and eye movements in this tracking. However, the evidence as it stands is incomplete. Further analyses are needed to clarify how the observed results relate to the relevant theoretical claims.

eLife Assessment

The ExA-SPIM methodology developed here and characterized and supported by convincing evidence is an important development for the field of light sheet microscopy as the new technology provides an impressive field of view making it possible to image the entire expanded mouse brain at cellular and subcellular resolution.

eLife Assessment

This important study of the inhibitory complex amacrines (CAM) in the vertical lobe of Octopus vulgaris delivers a solid standard for the structural characterization of an anatomical region likely to be key for memory processing in this unconventional but complex organism, as well as a helpful classification of CAM subtypes. This work will be of broad relevance to the fields of memory and evolutionary neuroscience.