Before revision: 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: Sheep respond to hunger, fatigue and hyperthermia by grazing and resting in the shade of a treeDerek 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.