Multisensory extended reality
Multisensory extended reality (XR) integrates the five traditional senses, including sight, hearing, smell, taste and touch. Perception involves signals that go through the nervous system, as vision involves light striking the retina of the eye, smell is mediated by odor molecules, and hearing involves pressure waves. Sensory cues of multisensory extended reality include visual, auditory, olfactory, haptic, and environmental. Scent is prominent in multisensory extended reality, as in biology, the olfactory system is integrated through the sensory nervous system. Multisensory experiences have elements of neuromorphic engineering, cognitive science, positive psychology, neuroenhancement, and nanoemulsion technology. It is a  form of limbic system health technology that includes digital therapeutics. Multisensory experiences are biocentric, and may be designed to enhance user well-being via digital therapeutics by experiencing them as mood enhancing technology with digital therapeutic effects, providing positive changes in perception, mood, cognition, and behavior. Multisensory extended reality utilizes OpenXR and WebXR standards. It consists of perception, motor control, multisensory integration, vision systems, head-eye systems, and auditory processing. It is HCI human-computer interface technology. All of which requires reverse engineering the retina.