Fig. 4. Scatter plot of individual rat values for total cerebral infarct volume and neurologic score measured 8 weeks after recovery from 50 min of middle cerebral artery occlusion. Open circles indicate rats allowed to emerge from anesthesia during middle cerebral artery occlusion. Stars indicate animals that remained anesthetized with 1.8% isoflurane throughout middle cerebral artery occlusion. A best-fit line is provided indicating the relation between cerebral infarct size and neurologic score (neurologic score =−10.097 + 15.418 × total infarct volume; R 2= 0.78).