Synonyms for Somaesthesis (same or very similar meaning)
WordNet sense 1 (the faculty of bodily perception; sensory systems associated with the body; includes skin senses and proprioception and the internal organs):
somaesthesia, somatesthesia, somesthesia, somesthesis, somataesthesis, somatic sense, somatic sensory system, somatosensory systemFrom the ODE community, based on WordNetadd/edit