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@@ -0,0 +1,21 @@
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+function [MI, rows] = getMI(values1, values2)
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+% by Mattia, 09/20
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+% simple helper function to compute modulation index (normalize "paired" values in the -1 to 1 range)
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+% inputs: - values1 & 2 -> vector with values to use to compute MI
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+% output: modulation index for the given values
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+
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+% important: - if the inputs take negative AND positive values,
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+% the behavior of the function is erratic (i.e.
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+% normalization between -1 and 1 fails).
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+% - if the inputs take negative OR positive values,
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+% the normalization succeeds
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+
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+% take only real values if input is complex
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+if ~isreal(values1) || ~isreal(values2)
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+ values1 = real(values1);
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+ values2 = real(values2);
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+end
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+
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+% compute MI
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+MI = (values1 - values2) ./ (values1 + values2);
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+end
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