There is exploratory mobility as well as goal-seeking mobility. Modes of awareness are not good indicators of the input of information. Exterospecific and propriospecific information may be concurrent. Sensations are not the basis of perception. Hearing includes not only the tensor tympanic reflex, but also ear cocking and head turning for localization.
Haptic system includes grasping, feeling, rubbing, hefting, palpating, groping, etc.
These systems extract information from the obtained stimulation and seek information from the obtainable stimulation. The invariants of available stimulation specify sources in the environment. The variants specify either external change or self-produced change. The latter both isolates the invariants and controls performance. The sensory systems seek and extract information generally by selecting, maximizing, optimizing, isolating, scanning, integrating, and accumulating.