Figure 3.

Relationships between activation and cognitive measures. Positive relationships between fMRI contrast values and measures of memory were identified within PIB+ subjects. Specifically, activation in LOcc was correlated with memory performance during the fMRI experiment (measured with the d-prime of high-confidence recognition responses, left; P = 0.007), whereas RHip and the average activation across the 5 task-positive ROIs were correlated with the visual memory factor score (middle, right; P = 0.031 and 0.035, respectively). Values are ranked due to the small number of subjects. There were no relationships with the other factor scores or within young or PIB− old subjects.