There are changes in the synaptic synchrony of millions of neurons connected at varying time delays and frequencies in the DMN. The “DMN” is constituted primarily by the cingulate gyrus, hippocampus, medial frontal lobes, temporal lobes and parietal lobes with approximately five times the number of synaptic connections than any other cortical network (Buckner et al., 2008; Hagmann et al., 2008). Activation of the DMN significantly increases demand on blood glucose and oxygen as well as changes in the synchrony of synaptic potentials on the dendrites and cell bodies of cortical pyramidal neurons as measured in the human EEG using 3-dimensional electrical neuroimaging methods (Pascual-Marqui et al., 1994; Pascual-Marqui, 1999; Michel et al., 2009) also referred to as EEG Tomography (tEEG) (Cannon et al., 2009; Thatcher, 2011; Thatcher et al., 2011) or Brain Electromagnetic Tomography (BET) (Valdés-Sosa et al., 1992; Bosch-Bayard et al., 2001; Hernandez-Gonzalez et al., 2011).
