Gurdjieff's Fourth Way teaching, also known as The Work, centers or brains refer to separate apparatuses within a being that dictate its specific functions.
The moving center, or the bottom storey is further divided into three separate functions: sex, instinctive, and motor.
In Beelzebub's Tales to His Grandson, Gurdjieff greatly expanded his idea of humans as "three brained beings".
This is considered the seat of the lower five centers: intellectual, emotional, physical, instinctual, and sexual.
The material body's actions are purely automatic and depend completely on the influences coming from outside factors, and its perception is confined to observation in a "subjective" manner.
On the Ray of Creation Gurdjieff indicated to Ouspensky that the physical body is on the level of the Earth and subject to the same number of laws (48).
On the Ray of Creation Gurdjieff indicated to Ouspensky that this body is on the level of All Planets and subject to the same number of laws (24).
Also, the perceptions of the intellectual body are capable of being of an objective nature in matters regarding both one's self, and things outside of one's self.
On the Ray of Creation Gurdjieff indicated to Ouspensky that this "mental body" is on the level of the Sun and subject to the same number of laws (12).
On the Ray of Creation Gurdjieff indicated to Ouspensky that this "fourth body" is on the level of All Suns and subject to the same number of laws (6).
In other words, the Material Body does not need directed attention in order to function and fulfill its role in the Ray of Creation.