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From: rknowles@garnet.berkeley.edu
Newsgroups: comp.sys.amiga
Subject: Re: Amiga 1000 in Computers in Physics
Message-ID: <1990Feb17.180003.871@agate.berkeley.edu>
Date: 17 Feb 90 18:00:03 GMT
References: <3050@pur-phy>
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In article <3050@pur-phy> murphy@newton.physics.purdue.edu.UUCP (William J. Murphy) writes:
>
>Last night I was reading my most recent issue of Computers In Physics.
>One of the feature articles was about tracking the blood flow in the retina
>using a laser doppler velocimetry technique.  A second technique that was
>used in a quantifiable subjective test was a comparison of stimulating the
>subjects retina with blue light.  When stimulated, the subject will
>perceive white dots seemingly in random motion.  The dots (this is only my
>recollection of the article) are caused by white corpuscles moving through
>the capillary structure and network of the retina.  The researchers quantified
>this motion using an Amiga 1000 performing a realtime animation.  
>
I just saw this system at the Nonivasive Assessment of the Visual System
meeting at Lake Tahoe.   They had a 500 at the meeting.   What you see
when looking at the blue field is the white blood cells.   Three quantities
are varied, the number of cells, the flow speed, and the pulse rate.  
Pulse rate is usually measured directly by a pulse detector hooked to the
ear lobe.  The amiga is synced to the heartbeat!  The subject then varies
the speed and number with two knobs until the Amiga graphic resembles what
they see in the blue-field entoscope.   Good repeatability, amazingly enough.