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. 2016 Jul 20;91(2):293–311. doi: 10.1016/j.neuron.2016.06.012

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© 2016 MRC Laboratory of Molecular Biology

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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Organizing Huge Neuron Datasets

(A) Affinity propagation generated 1,052 clusters. The mean within-cluster similarity score was 0.559; mean cluster size = 10. Exemplars were identified for each cluster.

(B) Mean cluster score versus cluster size.

(C) Hierarchical clustering (HC) of 1,052 exemplars divided into three groups (A–C). Group A corresponds mostly to optic lobe and VPN neurons; B and C to central brain neurons. Insets show neurons from these groups. Right inset shows stray neurons removed (n = 11).

(D) HC of central brain exemplars (groups B and C, inset) cut into 14 groups; h = 2.7.

(D′) Neuron plots from dendrogram groups in (D). Main neuron types/innervated neuropils are noted.

(E) Affinity propagation of defined neuron types. Exemplar neurons (top row) or all neurons (bottom row) for auditory AMMC-IVLP PN1 neurons (compare Figure S6D) and VPN types LC10B (compare Figure 5B) and LC4 (compare Figure S5B). Numbers of exemplars and neurons indicated in top left corner. AMMC (antennal mechanosensory and motor center) in green; wedge in magenta; AOTU (anterior optic tubercle) in green; LO, lobula; PVLP (posterior ventrolateral protocerebrum) in purple; PLP (posterior lateral protocerebrum) in cyan.