Sorry, that was of course the mid (to late)80's

On 8/28/2012 11:33 PM, rick wrote:
The flashing LED bike light was invented by Robert Choi in the mid-90's as the Cuë Light. If I remember correctly, he specifically developed the flashing rate to correspond to the "beta"? frequency of the human brain, claiming that a specific flashing rate would be more noticeable to human perception. His original design was a small red lensed light that the rider wore. I can't remember if he sold the design to Bell sports where it evolved into the Vistalight label or if he developed it under their auspices, but I do remember that other companies copied the idea and had to alter the flashing pattern/rate to get around the patent. So glad I retained this knowledge .....

Rick

On 8/28/2012 11:12 PM, Jason Tish wrote:
May be a little late...infrequent poster...15-year bicycle commuter...Sorry of 
I'm breaching any protocol on this list....BUT I have to respond to Kristy's 
post about flashing lights. I don't know anything about seizures but to me it's 
another reason why flashing bike lights suck. The main reason, IMO, is that in 
the dark a flashing light makes it difficult to determine distance to the 
light. Yes, they get attention better, but I contend that any white light at 
night gets sufficient attention, and a flashing light, since it messes with 
depth perception, takes an inordinate amount of attention to decipher, and is 
therefore less safe.

Jason


On Aug 25, 2012, at 3:31 PM,[email protected]  wrote:

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Today's Topics:

   1. Fwd: News Alert: Lance Armstrong to be stripped of 7 Tour    de
      (mstuartev tds.net)
   2. Bike Lights & Seizures (KMSH)
   3. Re: Bike Lights & Seizures (Robbie Webber)
   4. Re: Bike Lights & Seizures (Patrick Lenon)
   5. Weekly Reminder- Next MAM Ride Mon Aug 27 @ 6:30pm
      (We Are All Mechanics)


----------------------------------------------------------------------

Message: 1
Date: Fri, 24 Aug 2012 15:53:38 -0500
From: "mstuartev tds.net"<[email protected]>
To:[email protected]
Subject: [Bikies] Fwd: News Alert: Lance Armstrong to be stripped of 7
    Tour    de
Message-ID:
    <CAMxbj7pAetqSzMOzH8cBHTywoz_EOB=x2i_dwwz6f_h39gu...@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

News Alert: Lance Armstrong to be stripped of 7 Tour de....
blah blah blah blah blah blah etc etc blah
Lance Armstrong...    blah blah blah blah blah blah etc etc blah
Tour de France...     blah blah blah blah blah blah etc etc blah
Big surprise that pro bike racers are doping...   blah blah blah blah
blah blah etc etc blah

Sorry, Tour de France... becoming the most boring sports event in the
world. They keep running it and either it never gets finished or no
one wins... what's the point? Just let them do the dope. Make dope a
requirement of doing the race.

blah blah blah blah blah blah etc etc blah


------------------------------

Message: 2
Date: Fri, 24 Aug 2012 18:20:04 -0500
From: KMSH<[email protected]>
To: bikies<[email protected]>
Subject: [Bikies] Bike Lights & Seizures
Message-ID:
    <CABWpYCDeCCqL6S+kX4Y=87cfc29551t49cdj2hgms_sb6jh...@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

I was biking home two nights ago at dusk along the lakefront path near
campus and saw a runner ahead jogging toward me.  As he got close he said
"that light can trigger seizures" in a serious non-joking way, and then
kept on running.

I have heard that flashing lights in videos can trigger seizures, and I
agree that my front light blinks annoyingly fast (it's Bontrager Ion
2<http://store.trekbikes.com/product/bontrager+ion+2+headlight.do>,
from Trek), but is this really a big deal?  I find that I am more visible
with a blinking light (as opposed to keeping it on steady), and it saves
batteries too.

-Kristy
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Message: 3
Date: Fri, 24 Aug 2012 19:31:56 -0500
From: Robbie Webber<[email protected]>
To: KMSH<[email protected]>
Cc: bikies<[email protected]>
Subject: Re: [Bikies] Bike Lights & Seizures
Message-ID:
    <caot7dyzs1fnn2eqkhg8aly9ower50mvxfgsw0ts+z6bvx6p...@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

OK, a couple of disclaimers:
1. I am not a doctor or any type of medical professional.
2. The information below is the result of about 15-20 minutes of on-line
research.
3. Do your own research or ask a truly knowledgeable person to check my
information.

Epileptics are the population that is really at risk. There is a milder
form of seizure in non-epileptics that basically makes people dizzy, but
isn't considered dangerous.

 From what I can tell, rapidly flashing lights - at the rate of several
times per second - can trigger seizures in about 5-10% of epileptics, who
constitute about 1% of the population. I.E. about 5-10 people out of 1000
might have problems with rapidly flashing lights.

An epileptic responded to this very question that the time looking at the
light is important, and most people sensitive to seizures due to lights
know not to look directly at the lights, or to look away.

I don't know how fast front lights flash, but they might not even be in the
range that are likely to trigger problems in susceptible  persons. The
flash rate has to be really fast.

Bicyclists have a right to protect themselves too, so you have to weigh
your own safety against that of the very small possibility that you will
happen to trigger a seizure in some facing you on the path or street.


Robbie Webber
Transportation Policy Analyst
State Smart Transportation Initiative
www.ssti.us
608-263-9984 (o)
[email protected]



On Fri, Aug 24, 2012 at 6:20 PM, KMSH<[email protected]>  wrote:

I was biking home two nights ago at dusk along the lakefront path near
campus and saw a runner ahead jogging toward me.  As he got close he said
"that light can trigger seizures" in a serious non-joking way, and then
kept on running.

I have heard that flashing lights in videos can trigger seizures, and I
agree that my front light blinks annoyingly fast (it's Bontrager Ion 
2<http://store.trekbikes.com/product/bontrager+ion+2+headlight.do>,
from Trek), but is this really a big deal?  I find that I am more visible
with a blinking light (as opposed to keeping it on steady), and it saves
batteries too.

-Kristy

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Message: 4
Date: Sat, 25 Aug 2012 01:51:58 +0000
From: Patrick Lenon<[email protected]>
To:"[email protected]"  <[email protected]>
Subject: Re: [Bikies] Bike Lights & Seizures
Message-ID:<[email protected]>
Content-Type: text/plain; charset="iso-8859-1"


I doubt VERY MUCH that a bike light could trigger a seizure unless you're 
holding it in the person's face and propping their eyes open.  This came up a 
few years ago when a Pokemon cartoon caused a few seizures.
http://www.snopes.com/radiotv/tv/seizure.asp I'm no doctor either, but I've knows a few epileptics and I'm very skeptical of this.

------------
Patrick Lenon

Date: Fri, 24 Aug 2012 18:20:04 -0500
From:[email protected]
To:[email protected]
Subject: [Bikies] Bike Lights & Seizures

I was biking home two nights ago at dusk along the lakefront path near campus and saw a 
runner ahead jogging toward me.  As he got close he said "that light can trigger 
seizures" in a serious non-joking way, and then kept on running.


I have heard that flashing lights in videos can trigger seizures, and I agree 
that my front light blinks annoyingly fast (it's Bontrager Ion 2, from Trek), 
but is this really a big deal?  I find that I am more visible with a blinking 
light (as opposed to keeping it on steady), and it saves batteries too.


-Kristy

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Message: 5
Date: Sat, 25 Aug 2012 09:43:40 -0700
From: "We Are All Mechanics"<[email protected]>
To: "Bikies Listserve"<[email protected]>
Subject: [Bikies] Weekly Reminder- Next MAM Ride Mon Aug 27 @ 6:30pm
Message-ID:
    
<20120825094340.07c0c84b2a3a7106dddbcf1230189d95.78f8a3cdaf....@email04.secureserver.net>
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End of Bikies Digest, Vol 46, Issue 17
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