Your brain weighs approximately 2.5 pounds and consumes approximately 40% to 60% of blood glucose . . . . It produces electricity including synchronised and collective actions of small and large groups of neurons linked by axonal and dendritic connections. Each neuron is like a dynamically oscillating battery that is continually being recharged. Locally connected neurons recruit neighboring neurons with a sequential build up of electrical potential referred to as the recruiting response and the augmenting response also called EEG “burst activity” and “spindles”. . . . EEG burst activity is recognised by spindle shaped waves that wax and wane (i.e., augmenting by sequential build up then asymptote and then decline to repeat as a waxing and waning pattern) are universal and are present in delta.
– Robert Thatcher, PhD, 2004