Normalizing the STA in script_102_RetinaData_STA

[chinmayeelm]

In line 57,
sta = sta / norm(sta) ; % the STA is normalized to 1

The norm() function returns a Euclidean norm, i.e,

$$ ||v|| = \sqrt \sum_{k=1}^N |v_k|^2 $$

So, the sta is not normalized to 1.