Figure 8—figure supplement 4.
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- ZDB-FIG-230319-86
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- Chen et al., 2023 - Granger causality analysis for calcium transients in neuronal networks, challenges and improvements
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Distribution of GC link directions. Polar histogram of the proportion of angles of significant Granger causality links over all possible GC links between neurons. Using the naive bivariate GC (top row), we obtain a network that is almost fully connected, thus the proportion is close to 100% for all links and the polar histogram is close to a circle. The results of the adapted bivariate GC (2nd row), the naive multivariate GC (3rd row), and the adapted multivariate GC (bottom row), show a majority of links from right to left, suggesting an information flow from the right to the left hindbrain. This result is obtained in the medial swim-correlated neurons of the reference plane (N = 20 neurons, red, left column) and is conserved when GC is applied to all swim-correlated neurons of this plane (N = 41 neurons, blue, 2nd column), as well on swim-correlated neurons of all planes the reference fish (11 planes, 176 neurons in total, purple, third column), and across all swim-correlated neurons of all planes of all fish (n = 10 fish, 975 neurons in total, gray, right column). |