labelling elements in an array

I have a matrix G with

labelsG = {'Delusions','Hallucinations','Flattened','Inappropriate','Poverty','Thought'};

I have performed constrained PCA and a rotation to get a new variable, Predictor_weights. Each element of Predictor_weights is how much a given column of G (symptom) can predict variation in another matrix (Z).

I took the four most extreme values of Predictor_weights, and called this new variable absmax_Predictor_weights.

[~, index] = sort(abs(Predictor_weights), 'descend');
  absmax_Predictor_weights = Predictor_weights(sub2ind(size(Predictor_weights), index(1:4, :), repmat(1:size(Predictor_weights, 2), 4, 1)));

MY QUESTION:

How can I assign my labels of G to the numeric elements of absmax_Predictor_weights? Each numeric element of absmax_Predictor_weights relates to a column of G.

Hope that makes sense, and thank you!