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Visual objects refine head direction coding
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DOI：10.1126/science.adu9828.png)
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Abstract
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Although much of the visual system is dedicated to processing objects, we still don’t fully understand how visual objects affect spatial information coding. Siegenthaler et al. used functional ultrasound imaging to screen for mouse brain areas strongly activated by visual objects. At the brain network level, the spatial navigation system, not the ventral visual stream as in primates, exhibited a robust preference for visual objects. At the brain region level, one of the top hits of the ultrasound screen was the postsubiculum, an area with many head direction cells. In recordings from postsubiculum cells in freely moving mice, visual objects boosted the firing rate of head direction cells, with preferred firing directions pointing toward the object, and decreased the firing of cells that encoded other head directions. —Peter Stern
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