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. 2023 Nov 20;20(12):2011–2020. doi: 10.1038/s41592-023-02059-8

Fig. 4. Unsupervised exploration of mouse layer 5 pyramidal dendrite embeddings.

Fig. 4

a, SegCLR embeddings projected to 3D UMAP space, with two selected axes displayed. Each point represents an embedding (aggregation distance 50 μm) sampled from only the dendrites of mouse layer 5 pyramidal cells. The UMAP data separate into three main clusters. b, Renderings of selected cells, colored to match a for locations for which the nearest embedding fell within cluster 1 (blue) or cluster 2 (red). Projections falling within cluster 1 are strongly associated with the apical dendrite subcompartment, while cluster 2 is strongly associated with a subset of basal dendrites corresponding to cells with a distinct ‘near-projecting’ (NP) morphology (inset). c, Of the cells for which the projections fall within cluster 3, a subset have distinctive axon trajectories consistent with their axons joining a major output tract (left). These ‘tract’ cells also occupy a distinct subregion within cluster 3 (middle, green). Cells occupying the remainder of cluster 3 (middle, purple) consistently lack the axon tract morphology (right). The tract and no-tract groups are also able to be separated in both primary visual area V1 (left group of cells for both tract and no-tract) and higher visual areas (right group of cells for both tract and no-tract). Scale bars, 100 μm.