Intrinsic Sensory Stimulation:

Intrinsic sensory stimulation is both internal sensory stimulation and highly specific sensory information generated naturally within the body—related to the body’s internal mechanisms, like proprioception (body awareness) or stomach signals of hunger — which act as a feedback loop to maintain homeostasis. Internal sensory stimulation originates from inside the body, without specifying the source as actively generated by the body’s own processes, like changes in blood pressure or temperature. Also see Extrinsic