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. Author manuscript; available in PMC: 2016 Aug 15.
Published in final edited form as: Respir Physiol Neurobiol. 2015 May 21;215:73–81. doi: 10.1016/j.resp.2015.05.009

Figure 7.

Figure 7

Composite matrix of linear relationships between respiratory variables. Variables analyzed include Pdi amplitude, estimated premotor drive (dPdi), inspiratory time (TI), expiratory time (TE) and the total time (TTOT). Average (± SD) correlation coefficients (r) are reported in each interaction box along with the number of animals (out of 7) displaying a significant (p < 0.05) correlation. The color of each box indicates the average level of correlation according to the map (right) and ranges from positive (red) to negative (blue), with color intensity binned into 4 levels: none (0.0 – 0.1), small (0.1 – 0.3), moderate (0.3 – 0.5), and large (0.5–1.0).