I think most significantly, Mr. Light's engineering report describes the Ohio gorget as having three apparent sections to the engraving. Mr. Light is an engineer with no archaeological background so his observation may be taken as independent of influence from the work of others regarding like engravings. M.A. Kiriyak also comments regarding three apparent sections on the Siberia, Russia, artifact and thinks it may be related to the universally reported experience of passing three stages in the transcendence to altered mind states as might be experienced in deep meditative or shamanistic activities. She notes similar patterns have been seen ethnographically on the cloaks worn by Siberian shamans.
These patterns are seen entoptically between the visual cortex of the brain and the eyelid. They are known to cognitive archaeology scholars as Turing instabilities.
Here is a recent article describing research into Turing instabilities engraved patterns on artifacts.
"The non-ordinary visual experiences were often characterised by similar kinds of abstract geometric patterns, which he classified into four categories of form constants: (1) gratings, lattices, fretworks, filigrees, honeycombs, and checkerboards; (2) cobwebs; (3) tunnels and funnels, alleys, cones, vessels; and (4) spirals."
The Archaeological Society of Ohio (ASO) quarterly journal edited by Robert N. Converse, Ohio Archaeologist, is available from the Society and also as a benefit of annual membership in the ASO which is just $30.00. Monthly meetings are available at local ASO chapters throughout the State of Ohio.