Update: Primary motor cortex

www.utdallas.edu_tres_integ_mot2_2_08.jpgThe primary motor cortex in the posterior frontal lobe (Brodmann area 4) was first described by David Ferrier in 1874, who used electrical stimulation to map the cortical areas responsible for movement in monkeys 1).
Since these initial findings, the description of this area has evolved to include the concept of a somatotopic map, wherein different parts of the body are represented individually on the primary motor cortex, as observed by Penfield and Boldrey 2)
 
1) Ferrier D. Experiments on the brain of monkeys – No. I. Proc R Soc Lond. 1874;23:409–30.
2) Penfield W, Boldrey E. Somatic motor and sensory representations in the cerebral cortex of man as studied by electrical stimulation. Brain. 1937;60:389–443

David Ferrier has died

Sir David Ferrier FRS (13 January 1843 – 19 March 1928) was a pioneering Scottish neurologist and psychologist.
The primary motor cortex in the posterior frontal lobe (Brodmann area 4) was first described by David Ferrier in 1874, who used electrical stimulation to map the cortical areas responsible for movement in monkeys 1).
1) Ferrier D. Experiments on the brain of monkeys – No. I. Proc R Soc Lond. 1874;23:409–30.

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