home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!spool.mu.edu!uwm.edu!ogicse!news.u.washington.edu!stein.u.washington.edu!hlab
- From: jpc@tauon.ph.unimelb.edu.au (John Costella)
- Newsgroups: sci.virtual-worlds
- Subject: Re: LEGAL: Epilepsy health warnings
- Message-ID: <1k2d9cINN8hk@shelley.u.washington.edu>
- Date: 25 Jan 93 23:47:02 GMT
- Article-I.D.: shelley.1k2d9cINN8hk
- Organization: University of Washington
- Lines: 42
- Approved: cyberoid@milton.u.washington.edu
- NNTP-Posting-Host: stein.u.washington.edu
- Originator: hlab@stein.u.washington.edu
-
-
- > From: diego@minerva.st.dsi.unimi.it (Diego Montefusco)
- > Subject: Re: LEGAL: Epilepsy health warnings
- >
- > I recall that everyone suffering from epilepsy has some kind of "critical"
- > frequency, which (if I recall right) is the one her/his brain works at when
- > having a crisis (sp?). If s/he gets a visual stimulation at the frequency,
- > like when driving in a straight road with trees on the sides and the sun
- > appearing and disappearing through the trees, an epileptic attack can be
- > induced.
- > Maybe they should put warnings on the trees too! :-)
- >
- > Disclaimer: I am talking about things I read a LONG ago, so I may have
- > completely distorted the meaning...
-
- No, you pretty well got it right. I have someone in my family who
- has suffered exactly this. It is now under control with mild drugs.
-
- Possibly more worrying to people who get frazzled by the flickering
- images of a Nintendo is that they may be branded for life as being
- an `epileptic' (no qualifiers). If they go to apply for their Driver's
- Licence, and mention `epileptic', they'll most likely get a big
- red stamp across their application banning them for life. Not very
- nice if they only get tweaked by Nintendos.
-
- I recall some literature saying that if you put people into a
- *closed feedback loop* with an oscillating stimulus, such that the
- brain's own waves are used to synchronise the stimulus, then
- ONE IN TWO of the population suffer epileptic-type fits. So it's
- a little dangerous to label people `epileptic' without a qualifier.
- You'll be including half the population of your country if you do.
-
- Lesson: If someone goes a little wonky after being in your virtual
- world, take them into a confidential area before talking to them
- about `epileptic fits'. Ignorance is still widespread.
-
- John
-
- ----------------------------------------------------------------------------
- John P. Costella School of Physics, The University of Melbourne
- jpc@tauon.ph.unimelb.edu.au Tel: +61 3 543-7795, Fax: +61 3 347-4783
- ----------------------------------------------------------------------------
-