III.   Biological Systems (PSYBIO)

Audition, also known as “hearing” is the ability to sense changes in the density (pressure) of the molecular medium around the body (air or water), expressed as vibrations or sound.

As changes in the density (pressure) of the normal molecular medium around the body (air or water) represents a key sign of potential threats, food or similar members of the species then all independently mobile simple Level III life forms and above can sense or “hear” sounds each within a certain range using:

(i) acoustic resonance designs within body parts for certain harmonic frequencies; and

(ii) sensory neurons and the use of hairs on their outer layers; and

(iii) specialized auditory sensory devices call “ears” for Level IV life forms and above.

Acoustic resonance design of body / bone cavities evolved through nature as a natural means of amplification of key sound frequencies that are both a positive sign or negative sign (threat) to a particular species. For Level IV life, these naturally acoustic body cavities also provided a means of producing consistent specific sounds at frequencies and loudness to communicate, or “speech”.

The ear of Level IV and Level V provides the ability for a life form to isolate and amplify certain frequencies through the existence of mechanoreceptors within ears which through training and education become specialized at converting the vibrations into electrical impulses upon perceived sensory input.