Precuneus

The precuneus becomes less active during goal-directed cognitive or perceptual tasks, suggesting it is selectively reducing awareness of potentially distracting environmental factors (Gusnard and Raichle, 2001).

The logistic regression model revealed that reduced rCBF^([regional cerebral blood flow]) in the inferior parietal lobule, angular gyrus, and precunei had high predictive values and discriminative ability of converters to nonconverters.

Studies using EEG-fMRI have shown that there are bilateral areas of deactivation during generalized spike-wave discharges (GSW) in IGE within the thalamus, precuneus, anterior cingulate cortex and inferior parietal cortex.