Proprioception

**Proprioception**, in the field of parapsychology and other realms parascientific research, refers to the ability of a person or object to sense phenomena that occurs outside the confines of true reality - namely events and cryptids within perireality. This alternative meaning of the word was extrapolated from proprioception's definition in neurophysiology as the sense of self-movement and bodily position, and in the terms of parapsychology, attempts to relate the sense of things beyond normal sense and reality relative to oneself. It was pioneered by parapsychologist Martin Gruer in 1889 and became the foundation of what would become paranormal and parapsychological research in the modern age.

## Overview

Parapsychological proprioception varies from cryptid to cryptid that utilizes it, and as such, is particular to each cryptid that exhibits the phenomenon. For example, most humans lack a sufficient level of parapsychological proprioception to detect any preternatural instance, cryptid, or phenomenon; those that do, however, are able to sense such through parallel sense of sight, sound, touch, smell, and taste that would otherwise not be present or detectable. It is currently unknown as to what portion of the human brain possesses a nervous tract for the sensing of parapsychological proprioception, but a biological basis nevertheless implicated due to its existence in animals and its ability to be replicated in artificial tools like the Brugmann Device.

### Conscious proprioception

*Conscious proprioception* is a term used to refer to the conscious, mindful detection of supernatural phenomena by a living being such as a human or an animal. This is seen in animals through sudden changes in natural behaviors, such as dogs or cats becoming instantaneously alert and displaying fight-or-flight responses or wildlife in an area ceasing sounds. However, this is not consistent nor reliable of a response, as the threshold for proprioception varies even between animal to animal, and the context of the anomalous phenomenon may suggest different conscious responses.

### Non-conscious proprioception

*Non-conscious proprioception* refers to the non-mindful or otherwise artificial detection of supernatural phenomena; this can be accomplished by both living and non-living entities. For living beings, non-conscious proprioception can manifest in sudden reflex and autonomic nervous responses to phenomena that may not be consciously visible to the brain, such as fight-or-flight responses. However, unlike fight-or-flight responses found with conscious proprioception, these responses are often more confused and sporadic in both humans and other animals, and are also much more commonly reported by humans (thus implying to also be true in other animals). Other feelings reported apart from fight-or-flight responses of higher beats-per-minute, sweating, and general fear includes the feeling of being watched, of being in a dangerous environment, or of impending doom.

For non-living things such as Brugmann Devices, non-conscious & non-living proprioception involves the artificial detection of supernatural phenomena through the basal understanding and application of the Psi factor. The psi factor (symbolized by **ψ**) is a parascientific variable assigned to anything supernatural that can be influencing the local environment, and cannot be individually quantified. In most cases, ψ factors arise as:

* the sudden appearance or disappearance of physical vectors of movement for objects despite having no input of energy and motion,
* the sudden appearance of temperature fluctuations and the appearance/disappearance of radiation and heat without a determinable thermodynamic cause,
* the sudden outright appearance or disappearance of objects in violation of the law of conservation of mass.

Due to the reliance on these ψ factors, many artificial proprioceptive devices are unreliable, as preternatural phenomena within the Other or perireality may still arise without violating these principles.