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Originally posted by VoidSpiritActually the senses are far from independent.
senses work independently and automatically. you don't have to 'know' anything to be able to see, to hear, to taste, etc.
The brain is constantly adapting and updating sensory input and modifying one sense based on input from another.
http://www.livescience.com/17046-plate-color-flavor-psychology.html
http://www.theskepticsguide.org/archive/podcastinfo.aspx?mid=1&pid=332
- Joined
- 31 May 06
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Originally posted by VoidSpiritAnyone deprived of navigation aids will (barring obsticals) walk in a spiral.
so a blind person can only walk in a spiral?
However the blind (as opposed to someone simply blindfolded) use different
cue to navigation than sight.
Some can even utilise echo-location, and there is at least one guy good enough at it
that he can ride a bicycle while echo-locating.
Originally posted by googlefudgeAmazing.
Anyone deprived of navigation aids will (barring obsticals) walk in a spiral.
However the blind (as opposed to someone simply blindfolded) use different
cue to navigation than sight.
Some can even utilise echo-location, and there is at least one guy good enough at it
that he can ride a bicycle while echo-locating.
If you haven't seen it here it is
Originally posted by googlefudgeSo is this evolution or adaptation?
Actually the senses are far from independent.
The brain is constantly adapting and updating sensory input and modifying one sense based on input from another.
http://www.livescience.com/17046-plate-color-flavor-psychology.html
http://www.theskepticsguide.org/archive/podcastinfo.aspx?mid=1&pid=332
Originally posted by galveston75I don't know exactly, and apparently nobody else does either.
Soooooooo exactly how did this just happen for these amazing fish?
However, based on our knowledge of other traits of living things, it almost certainly followed this general pathway:
1. In one of their ancestors there existed the necessary components for navigation, (whether they use smell or magnetism or a combination).
2. Those components existed for some other reason, either they were useful for something else or were a side effect of something else useful. Or just occurred by chance in a few individuals.
3. The components proved useful to some individuals, and as a result of natural selection they improved, and spread through out the population.
Originally posted by googlefudgei'm talking about senses being independent of what you know, not independent from information gathered by the senses! you can hear a train without knowing that it is a train. you can see a tree without knowing it is a tree, and so on, and if you can feel magnetic nuances, you don't have to know anything about cardinal directions.
Actually the senses are far from independent.
The brain is constantly adapting and updating sensory input and modifying one sense based on input from another.
http://www.livescience.com/17046-plate-color-flavor-psychology.html
http://www.theskepticsguide.org/archive/podcastinfo.aspx?mid=1&pid=332
Originally posted by googlefudgedo you have any sources on the research done on this topic?
Anyone deprived of navigation aids will (barring obsticals) walk in a spiral.
However the blind (as opposed to someone simply blindfolded) use different
cue to navigation than sight.
Some can even utilise echo-location, and there is at least one guy good enough at it
that he can ride a bicycle while echo-locating.
Originally posted by googlefudgeinteresting. however, i noticed a couple of things; 1st is that "most" not all of those tested walked in circles, and only a small number of people were tested.
http://www.newscientist.com/article/dn17658
http://www.youtube.com/watch?v=_0gQWK737aU
i don't find the results too surprising. most people don't have training to navigate without their sense of vision and tend to ignore other cues.
Originally posted by googlefudgeWell the thing I'm questioning about with any life that has this ability of homing or navagation on any level is at some point in the evolutionary process this did not exist. It couldn't have as it's a faily complicated ability to pull off and to be so accurate and something that we don't fullt understand. So how did this just accidently start in some basic life form ions ago?
Our brains evolved, like the rest of us, but the day to day operation of the brain is not described by evolution, but neuroscience.
so neither.
In fact I'm curious why humans don't have this ability on a higher lever even then what a bird or fish has as we're supposed to be the most advanced species on earth so they say?
Originally posted by galveston75I thought you'd studied evolution 'all your life'? Surely you should know the answers already?!
Well the thing I'm questioning about with any life that has this ability of homing or navagation on any level is at some point in the evolutionary process this did not exist. It couldn't have as it's a faily complicated ability to pull off and to be so accurate and something that we don't fullt understand. So how did this just accidently start in some ba ...[text shortened]... bird or fish has as we're supposed to be the most advanced species on earth so they say?