Both the primary somatosensory cortex and the primary motor cortex have all regions of the body represented within each cortex.How is this representation organized?
A) Larger body parts are represented by more neurons within each cortex.
B) Areas of the body requiring greater muscle strength have more neurons located in both cortexes.
C) Representation is proportional to the innervation of the body area that results in finer motor control or greater sensitivity.
D) The senses of sight and hearing occupy most of the cortical map, with all other body parts having fewer neurons in either cortex.
E) Information from muscle fibers is distributed uniformly throughout the primary motor cortex, which passes this information on to the somatosensory cortex.

Question

Quizplus · Accepted Answer

The organization of the representation in both the primary somatosensory cortex and the primary motor cortex is proportional to the innervation of the body area that results in finer motor control or greater sensitivity. This means that body parts with more precise and intricate movements or more sensitive touch have a larger representation in these cortical regions compared to body parts that require less precise movements or have lower sensitivity. Thus, this organization allows for the precise and differentiated control of movements and sensitivity in different parts of the body.

Both the Primary Somatosensory Cortex and the Primary Motor Cortex