The prefrontal cortex has been defined based on cytoarchitectonics by the presence of a Jacobsen used the term prefrontal to distinguish granular prefrontal areas from agranular motor and premotor areas.
12.
Finally, a spot in the right superior premotor area of the cortex which is shut down in normal speakers, glows in stutterers; its location suggests it is " likely to be involved in movement planning,"
13.
The IO pantomime activity was largely lateralized in the left hemisphere, namely in the bilateral supplementary motor areas, cingulate gyrus, left premotor areas, left superior parietal lobule, and the left middle and inferior frontal gyri.
