The term task positive network refers to a combination of cortical areas that are prominently fMRI activated during cognitive tasks involving attention and/or working memory. It and the default network are both activated under resting, no-task conditions. Rhythmic fluctuation of activity, periodic on a 2 to 3 sec time base, is anticorrelated between the two networks ( Fox-2005 ). The task positive network includes area PF, area PHT, area 23c and area 46 ( Supplementary Methods 5.4 to Glasser-2016 ).