Eggcorn Forum

“Synthesis” can imply a blending or mixing of disparate things, so it’s fairly unsurprising that the word might also influence the form of “synesthesia,” which describes a condition in which different senses are seemingly blended with or substituted for each other. (It’s impossible to get a count for this because there are a number of songs, albums and bands called “Synthesthesia.”) Examples:

Klein may have been describing a condition called “synthesthesia” in which two or more of a person’s senses are blended together.
http://www.news-antique.com/?id=781420& … o-Schwartz

There’s also synthesthesia in which information of one abstract sort may come to you as a more familiar interpretable sense like color.
http://surveycentral.org/survey/19987.html

Landing, as it did, on the same emerging “midnight movie” circuit as NIGHT OF THE LIVING DEAD, FRITZ THE CAT, and EL TOPO – with almost everybody stoned or tripping their ass off – it HOTWIRED OUR TRANSGRESSIVE GLANDS into a kind of cultural synthesthesia.
http://www.storytellersunplugged.com/20 … house.html

Fantasia (1940) features scenes that portray synthesthesia (“See the music, hear the pictures,” reads the video’s promotional copy) and other phantasmic phenomena that make it one of the most beloved of all films to view while tripping.
http://www.psychedelicadventures.com/BriefHistory.htm

A bout of synthesthesia told him that the air tasted like blue, the cold felt like spicy marigolds, and the melancholy was just hanging there like dirty quilts.
http://raincoatflashers.blogspot.com/20 … ed-11.html