noun

• (psychology) The entire sensory apparatus of an organism.
  "The continuum is broken, and the rise of writing helps to break up as well the continuum of the sensorium, to locate consciousness in the written word. What the written word is to the sensorium, the ego is to the entire consciousness, and the city is to the entire encirclement of nature."
• (physiology) The central part of a nervous system that receives and coordinates all stimuli.
  "[…]in all injuries of the spine whereby a communication with the sensorium is cut off, it is the parts below the injury which are deprived of sensation, while those above retain their sensibility."
• (figurative) The brain or mind in relation to the senses.
  "Others have conſidered infinite Space as the Receptacle, or rather the Habitation of the Almighty : But the nobleſt and moſt exalted Way of conſidering this infinite Space is that of Sir Iſaac Newton, who calls it the Senſorium of the Godhead. Brutes and Men have their Senſoriola, or little Senſoriums by which they apprehend the Preſence and perceive the Actions of a few Objects, that lie contiguous to them."