Fig. 4.

Pairwise correlation of spontaneously active neurons. A: example Jaccard similarity matrix obtained from one slice in baseline ACSF. B: example map of functional connections (gray lines) between neurons in the same data set as A. C: distributions of Jaccard indices under baseline conditions, pooling all pairs (black curve), or functionally connected pairs (gray) of active neurons from all slices. D and E: conditional probability of functional connection, as a function of neuronal separation distance and the angle between the line segment connecting the pair of neurons and the medial-lateral axis.