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Christenson et al. describe hue-selective neurons in the fruit fly optic lobe. Using a connectomics-constrained model combined with genetic manipulations of the circuit, they show that recurrent connections are critical for hue selectivity.
By performing displacement experiments with Lamprologus ocellatus, we show evidence consistent with fish using path integration to navigate alongside other mechanisms: allothetic place cues and route recapitulation.
Neural circuitry conveying visual information to the medial entorhinal cortex (MEC), a crucial region for spatial cognition, is not fully understood. Here, the authors report a direct pathway from the secondary visual cortex to MEC layer 5a in mice and its involvement in memory-guided navigation, thus revealing a role of deep MEC in sensory information transmission.
The uniformity of laminar processing in a cortex remains not fully understood. Here authors show that high spatial frequency stimuli elicit distinct active patterns across V1 layers, arising from multiple mechanisms involving M and P pathways.
Innate fear-like responses are thought to involve the amygdala, but here a tetra-synaptic pathway is identified that mediates odour-evoked innate fear in mice.