center of mass

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James Jun edited this page Jan 3, 2018 · 1 revision

Center of mass is calculated for each spike or cluster using the following formula:

x_cm = sum(sx_k * a_k^2, k=1..n) / sum(a_k^2, k=1..n)

sx_k: x coordinate value of site k
a_k: first principal component value of spike waveform at site k
k: site index
sum(b, b=1..10): sum of b from 1 to 10