[NSRCA-discussion] S.bus

[rcmaster199 at aol.com]

I found out last year during signal testing in my wrists, that average signal traverse through the wrist is 4 ms. Anything above that means your response to stimulus is slow and you are probably going to need surgery to attempt a repair. My resposne was in the teens in both wrists. My repairs were successful
 
I also asked what the response time is for the signal having to travel from the head to the wrist....that time is apparently about 10X the normal response time through the wrist, or around 50 ms.
 
That's only half of the sequence of events, the response half. There is also the visual stimulus half that creates the response half. I could easily see the whole sequence taking 100 ms or more before your eye perceives, brain processes, and fingers react. 
 
FWIW2U
 
MattK




-----Original Message-----
From: Dave <DaveL322 at comcast.net>
To: 'General pattern discussion' <nsrca-discussion at lists.nsrca.org>
Sent: Sat, Jul 10, 2010 9:04 am
Subject: Re: [NSRCA-discussion] S.bus

I believe the NSRCAAFAPSAHITIRCAF has been directed to join NASA in their efforts of cultural unification…….
 

From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Keith Hoard
Sent: Friday, July 09, 2010 12:44 PM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] S.bus

 
Sounds like a mission for the NSRCAAFAPSAHITIRCAF (NSRCA Academy For Advanced Pattern Studies And Human Interfaces To Improve Radio Controlled Aerobatic Flight).  


On Sat, Jul 10, 2010 at 12:35 AM, Phil Spelt <chuenkan at comcast.net> wrote:
Bill, that is an empirical question -- one that could be tested in the lab.  However, I am convinced that your implication is correct:  the difference between 7 ms and 14ms is probably not detectable by anyone.  The fascinating question is, where is the mean cut-off time between non-detectable and detectable delays...

Anyone got a coupl'a mil $$ so I can but the equipment and conduct the tests??? lol

At 12:00 PM 7/9/2010, you wrote:


The next question then becomes, at what level can we perceive a difference in performance? In other words, can we really perceive a difference between 7ms and 14ms latency? I will not argue that large differences are readily perceptible (25 versus 250), but what about smaller differences. How large of a difference does there need to be and is there a threshold below which it does not really matter?



Phil Spelt wrote: 


As a Psychologist, I agree with you, Bill.  As an R/C pattern jockey, I will only point out that the electronic latency is ADDED TO the wet-ware latency...

Thus, your last statement is true, indeed!

At 11:19 AM 7/9/2010, you wrote:


I am amused by discussions about latency. We have long discussions about the perceived advantages of single digit differences in system latency while ignoring the fact that the average human reaction time (call it organic latency) is around 250 milliseconds. 

I guess you can argue that since we are inherently so slow we need all the electronic help we can get!! 





Jon Lowe wrote: 
There is a great article on latency here: 

http://www.rcmodelreviews.com/what_is_latency.shtml

A lot of people are hung up on transmitter/receiver latency numbers, and don't see the whole picture.  This gives as good a fact based write up as any I've seen.

Jon Lowe

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--> There are only two types of aircraft -- fighters and targets.

Phil Spelt, Past President, Knox County Radio Control Society, Inc.
       URL: http://www.kcrctn.com
AMA--1294,  Scientific Leader Member  SPA--177, Board Member
      My URL: http://mywebpages.comcast.net/~chuenkan/
      (865) 435-1476 v  (865) 604-0541 c 
_______________________________________________NSRCA-discussion mailing listNSRCA-discussion at lists.nsrca.orghttp://lists.nsrca.org/mailman/listinfo/nsrca-discussion
_______________________________________________
NSRCA-discussion mailing list
NSRCA-discussion at lists.nsrca.org
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion 

-->There are only two types of aircraft -- fighters and targets.

Phil Spelt, Past President, Knox County Radio Control Society, Inc.
       URL: http://www.kcrctn.com
AMA--1294,  Scientific Leader Member  SPA--177, Board Member
      My URL: http://mywebpages.comcast.net/~chuenkan/
      (865) 435-1476 v  (865) 604-0541 c 


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-- 

Keith Hoard
Collierville, TN
khoard at gmail.com





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