Doing it the other way round – mapping motor function by intrinsic activity

The first neurosurgeons were already known for their aim to localize areas indispensable for motor function. Among them, Krause injected small currents in what became known as primary motor cortex (M1) and noted movements in specific parts of the body (Krause, 1908). Another great leap forward came as Penfield and Jasper laid the foundations for the sensorimotor homunculi, by which time technology had evolved with the advent of EEG so that cortical stimulation could be complemented by electrocorticography (ECoG) recordings of intrinsic brain activity.

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