Using Graph Theory to Assess the Interaction between Cerebral Function, Brain Hemodynamics, and Systemic Variables in Premature Infants

Figure 5

Features used to quantify the reduction in signal interaction strength: (gray shaded area) (a) and ∆ (gray arrow) (b). The feature values are illustrated for one neonate in the group of study (PMA 30 weeks, 2.5 mg·kg⁻¹), where the pairwise interaction was computed using (2). Feature values and ∆ are computed from 0 to 90 minutes, while the reference level is defined as the median value of the interaction curve from 180 to 360 minutes.

(a)

(b)