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From: djones@polya.Stanford.EDU (David Jones)
Newsgroups: comp.graphics
Subject: details of Pulfich Effect (SuperBowl 3D effect)
Message-ID: <6696@polya.Stanford.EDU>
Date: 7 Feb 89 00:32:30 GMT
Reply-To: djones@polya.Stanford.EDU (David Jones)
Distribution: na
Organization: Stanford University
Lines: 16

Although there have been many postings explaining how the SuperBowl
3D effect worked, I thought those of you wondering about the details
may be interested in the following paper just published.  Pulfrich
published his paper in 1922 by the way.

A Physiological Correlate of the Pulfrich Effect
in Cortical Neurons of the Cat
   Thom Carney, Michael Paradiso, Ralph Freeman
   Vision Research (1989), vol29 no2, pp 155-165

The abstract says:
"We found that placing a filter before one of the cat's eyes
produced a temporal delay in the cortical response."

From a quick skim of the paper, the size of the delays they find
are roughly 11 and 29 milliseconds, for 1 and 2 log unit filters.