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Results of the breakpoint analysis for regressions between right lateral frontal lobe volume controlled for intracranial volume (DLPFC and IFG) and verbal memory score (Immediate and Delayed). Plotted values denote the significance (y-axis) of differences between segment slopes across 120 possible breakpoints defined by memory z-score (x-axis). Horizontal line denotes p = .05. DLPFC: dorsolateral prefrontal cortex, IFG: inferior frontal gyrus.
