Before revision:  Results show that (1) the proposed estimator is consistent with theoretical predictions for total correlation, ( 2 ) the capacity increases substantially along the layers of the model, and (3) the capacity of the cortical representation follows the PDF of natural scenes over the chromatic and achromatic dimensions of the stimulus space .
After revision:  Total correlation measured using the proposed estimator is consistent with theoretical predictions for total correlation, ( 2 ) the capacity increases substantially along the layers of the model, and (3) the capacity of the cortical representation follows the PDF of natural scenes over the chromatic and achromatic dimensions of the stimulus space .