Neuroscience

eLife Assessment

This valuable study reports results showing how different neurons in the dysgranular retrosplenial cortex code spatial orientation. Specifically, the paper reports that some neurons maintain tuning for a single head direction across multi-compartmental environments, while other neurons are tuned to different head directions that reflect the geometry within each compartment. The study was viewed as likely to expand the field's understanding of directional tuning of neurons, but incomplete evidence was provided to support the conclusions.

eLife Assessment

The study investigates, from multiple angles, the still-debated function of insect rhodopsin-7 (Rh7). The authors present compelling results for its ancient phylogenetic origin across pan-arthropods, a non-visual role based on expression analyses in the fly brain, an unusual G-protein signalling pathway, and - using behavioural genetics - that Rh7 affects how Drosophila melanogaster interprets and responds to light-dark transitions. Through this, the work provides fundamental new insights into the evolution and function of non-visual opsins.

eLife Assessment

This study addresses a key, long-standing question about how visual feature selectivity is organized in mid-level visual cortex, using an ambitious combination of large-scale neural recordings and image synthesis. It provides important insights into the complexity of single-neuron selectivity and suggests a structured organization across cortical depth. While the evidence is generally solid and technically impressive, several key claims would be strengthened by additional controls, particularly regarding the sources of similarity across neurons and the dependence of the results on modeling choices.

eLife Assessment

There is a perennial question in the field of birdsong: the contribution of the cerebellum to singing and processing song-related information. This study provides a valuable first step into this discussion, using electrophysiology of cerebellar neurons during a battery of assays, including singing and song playback. While the electrophysiological dataset here is novel and could shed light on key aspects of the neural control of vocal behavior, the evidence provided for the conclusions reached by the authors is currently incomplete.