The premotor cortex (PM) refers to human Brodmann area 6 (BA6), and often anteriorly adjacent areas BA44 and BA8 are also included. The function traditionally attributed to the PM is the preparation and the organization of movements and actions (Wise, 1985). However, with the introduction of imaging methods, which allow the neural correlates of behavioral functions to be measured online, premotor activations have frequently found in nonmotor “cognitive” domains. As these findings were difficult to interpret in light of the classical motor view, they were typically taken to reflect some kind of latent motor processes. As such, they were experimental artifacts of either nonsuppressible or deliberately chosen behavioral strategies, like verbalizing or tapping, or simply movement noise. However, nowadays the exploration of cognitive function of the human premotor cortex has become an independent field of research, supported and also inspired by results from research in the monkey. Hence, currently a diversity of concepts of PM functions coexist, referring partly to the classical motor account, partly to the scope of nonmotor functions. With particular interest in the nonmotor domain, the present paper aims to outline current concepts of human PM functions as have emerged from imaging results. Concepts apply to functional–anatomical dissociations of right vs left, medial vs lateral, rostral vs caudal, and dorsal vs ventral PM. In view of widely missing macroanatomical borders between PM subsections, these labels can serve only as a gross orientation. Moreover, the investigation of cortical architecture in living humans on the microanatomical level using specific MR protocols is still restricted to a resolution of about 500 m (Damasio, 1991). As we lack direct evidence from individual cytoarchitectonic data in conjunction with functional results, any potential correspondences between subsections of the human and the monkey PM are based on functional rather than on anatomical homologies (e.g., Rizzolatti et al., 2002). The scope of the present paper is limited. It focuses on imaging studies (in contrast to other methods in humans and in contrast to monkey studies), on the lateral (in contrast to medial) PM, and on functional trends along the dorsal– ventral axis. Concepts are illustrated by some representative findings only.