Is an area of motor cortex lying within the frontal lobe of the brain just anterior to the primary motor cortex. It occupies part of Brodmann's area 6. It has been studied mainly in primates, including monkeys and humans.
The motor cortex comprises three different areas of the frontal lobe, immediately anterior to the central sulcus. These areas are the primary motor cortex (Brodmann’s area 4), the premotor cortex, and the supplementary motor area (Figure 3.1). Electrical stimulation of these areas elicits movements of particular body parts. The fourth level of the motor hierarchy is the association cortex, in particular the prefrontal cortex and the posterior parietal cortex (Figure 3.14). These brain areas are not motor areas in the strict sense. The premotor cortex is also known as the premotor area and the agranular cortex of Brodmann's area 6. Brodmann's areas are 47 different brain regions located on a map of the brain created by the German anatomist, Korbinian Brodmann. The premotor cortex is so-named because it is located before the primary motor cortex. The premotor cortex has connections with the prefrontal cortex and the supplemental motor area. It also has connections with the spinal cord and helps control movements in the trunk muscles of the body. The premotor cortex is also important for learning (imitation) and social cognition (empathy) – mirror neurons in the premotor cortex area of the macaque brain fire when the animal observes an action in others. Keywords: premotor, cortex, brain, movement, control, mirror, neurons. Description: The premotor cortex is involved in preparing and executing limb movements and coordinates with other regions to select appropriate movements. Transcript: The premotor cortex consists of a narrow region between the prefrontal and motor cortices. It is involved in preparing and executing limb movements and uses information from other cortical regions to select appropriate movement 2. the premotor cortex is responsible for some aspects of motor control, possibly including the preparation for movement, the sensory guidance of movement, the spatial guidance of reaching, or the direct control of some movements with an emphasis on control of proximal and trunk muscles of the body. First it is divided into an upper (or dorsal) premotor cortex and a lower (or ventral) premotor cortex. Each of these is further divided into a region more toward the front of the brain (rostral premotor cortex) and a region more toward the back (caudal premotor cortex). The premotor cortex is dysgranular: it contains a faint layer IV. The premotor cortex can be distinguished from Brodmann area 46 of the prefrontal cortex, just anterior to it, by the presence of a fully formed granular layer IV in area 46. The premotor cortex is therefore anatomically a transition between the agranular motor cortex and the granular, six-layered prefrontal cortex. The premotor cortex occupies the part of Brodmann area 6 that lies on the lateral surface of the cerebral hemisphere. The medial extension of area 6, onto the midline surface of the hemisphere, is the site of the supplementary motor area, or SMA. postcentral area (postrolandic area) an area just posterior to the central sulcus of the cerebral hemisphere that is the primary receiving area for general sensations. precentral area primary somatomotor area. premotor area an area of the motor cortex of the frontal lobe immediately in front of the precentral gyrus. Kiesselbach's area an area on the anterior part of the nasal septum, richly supplied with capillaries, and a common site of epistaxis (nosebleed). language area any nerve center of the cerebral cortex, usually in the dominant hemisphere, controlling the understanding or use of language. The premotor cortex is an area of motor cortex lying within the frontal lobe of the brain just anterior to the primary motor cortex. It occupies part of Brodmann's area 6. It has been studied mainly in primates, including monkeys and humans. The premotor cortex occupies the part of Brodmann area 6 that lies on the lateral surface of the cerebral hemisphere. The medial extension of area 6, onto the midline surface of the hemisphere, is the site of the supplementary motor area, or SMA. Brodmann Areas. Over a lifetime, the various parts of the brain that control the body's movements can suffer damage from various causes, such as head injuries, strokes, and degenerative brain diseases. One typical example is what happens when one side of the motor cortex is completely destroyed by a stroke.
http://neuroscience.uth.tmc.edu/s3/chapter03.html http://www.medfriendly.com/premotor-cortex.html https://www.dnalc.org/view/2101-Premotor-Cortex-.html https://en.wikipedia.org/wiki/Motor_cortex https://en.wikipedia.org/wiki/Premotor_cortex http://medical-dictionary.thefreedictionary.com/premotor+area https://en.wikipedia.org/wiki/Premotor_cortex http://thebrain.mcgill.ca/flash/d/d_06/d_06_cr/d_06_cr_mou/d_06_cr_mou.html
what does the premotor area control