Fig. 7. Metabolic and molecular underpinnings of synergy in the human brain.
(a) Significant Spearman correlation (two-sided CI: [0.195, 0.572]) between regional redundancy-to-synergy gradient scores, and the mean regional estimate of aerobic glycolysis based on PET measurements of cerebral metabolic rates for oxygen and glucose (Glycolytic Index); n=78 cortical regions. (b) Significant Spearman correlation (two-sided CI: [0.270, 0.731]) between cortical redundancy-to-synergy gradient scores, and the diversity (entropy) of neurotransmitter receptor expression from in vitro quantitative autoradiography across n=39 regions of human visual, somatosensory, auditory and multimodal association cortices. Color-bars correspond to scatter-plot axes.