Supplementary Motor Area (SMA)
The supplementary motor area (SMA) is situated medially and is in front of the primary motor cortex and medial to the premotor cortex. The SMA is also known as Brodmann area 6. The SMA can be divided into two areas, pre-SMA (rostral) and SMA proper (caudal). The SMA proper is involved in planning of learned complex movements (thought to be internally driven and not driven by visual cues) and in coordinating movements involving both hands. The pre-SMA is involved in the learning of new motor sequences.