Before revision: Sheep respond to hunger, fatigue and hyperthermia by grazing and resting in the shade of a tree Derek Denton called these motivating homeostatic feelings "primordial emotions" and defined them as "the subjective element of the instincts, which are the genetically programmed behaviour patterns which contrive homeostasis.
After revision: NeuroscientistSheep respond to hunger, fatigue and hyperthermia by grazing and resting in the shade of a tree Derek Denton called these motivating homeostatic feelings "primordial emotions" and defined them as "the subjective element of the instincts, which are the genetically programmed behaviour patterns which contrive homeostasis.