Fig. 2From: Systemic inflammation alters the neuroinflammatory response: a prospective clinical trial in traumatic brain injurySigned absolute maximum cross-correlations of brain and blood cytokine time series. For every cytokine and patient, the signed absolute maximum of the cross-correlation series of cytokines in extracellular brain fluid and arterial blood was recorded as the y-value, and the lag at which this occurred was recorded as the x-value. Each lag represents 6 hBack to article page