tyu by hft hft hjk

http://www.studymode.com/essays/Ib-Tok-Essay-1447804.html erything either consciously or unconsciously. We can never fully picture anything without having a bias on it which limits our knowledge. The same can be said about biological limitations, especially sight because we can only see a small part of what can be seen. However, filtering is more limiting because it includes everything and not just things we can see.
The least limiting is through past experience. Past experiences can be built on to update our knowledge such as driving a new type of car. We might not have driven that particullar car before but since we drove a car with the same concept, we can learn new knowledge faster, by building on what we already know.
Sense perception is our way of gaining knowledge through sight, hearing, taste, feeling and smelling. Scientists say that because we have our 5 senses, none of them are developed to their full potential. Bats who are blind, hear especially well. We don’t fully appreciate our senses as we have always had them. Our brain takes in information through our senses. It’s trained to block out things that we don’t need. Or even things that we do need but don’t realize it. For example, while we are working hard, we can hear slightly the conversation between people nearby. We hear, but we don’t fully understand because our brain is focusing on something else.
Smell is probably our least developed or acknowledged sense. We’re always smelling something but the only time we really acknowledge it is when we get a strong smell like hot dinner or the trash can.
All our senses are very sensitive and can be damaged easily. For example, hearing can be damaged by extensive use of loud music.
For sight and hearing, technology has been developed to enhance these senses.
Though some people claim to have “the sixth sense”, we don’t have a distinct tool that tells us what are people are thinking or feeling. We can only “receive” what others “send”. For example, if a person is invisible, they are not letting themselves be seen by you so you cannot see them.

From experience, we decide what we like. We develop a bias. Because of this, we cannot always rely on our senses. Senses work best at an instant of time. Once the moment has passed, it’s up to our memories to remember what it was like. The senses give us knowledge for the present, then we store the information until we have something else to compare it to. Which is what we’re always doing. We hear someone’s voice and the way in which we can tell when it is another person who’s speaking is through comparing the two voices. Knowledge is gained through experience.
Without experience, we don’t have knowledge. And without experiencing in 5 different ways (plus more), how can we experience?
# posted by dkrulz! : 4:03 AM
The least limiting sense perception is through your past experiences. this is because experiences can always be re-experienced. for example, if you have a car accident, it will be in your nature to be very careful while driving, but you can always gain new knowledge by going into the car again. Yes, it may limit you but it's the least limiting because you can easily overcome it later.
Through spatial familiarity is the 2nd least limiting factor. This has to do with optical illusions which can be overcome quite easily mostly by close analysis. For some people, this is a more limiting factor than the other, but normally we can see overcome the illusion.
Through seeing what is not there is not limiting, similar to spatial familiarity. It also has to with optical illusions, but more also to do with personal views and blocking out certain things that you sometimes don’t want to see. Close analysis does also help to overcome this, but preempted feelings and preempted thoughts can limit heavily this sense perception.
Through filtering is plays quite a large part in limiting your perception. Of course, language barriers are a very strong barrier that CAN be overcome, but not in the short run and it takes effort and motivation. Also, no one can speak every single language in the whole entire world. This depends on what kind of filtering it is as well because language barriers can be overcome with universal sign language but filter and bias viewpoints take more effort and time. It can become a greatly limiting factor.
Through biological limitations I feel is the most limiting. We as humans cannot morph and suddenly grow seven arms or anything like that

Perception
Perception -- seeing, hearing, touching, smelling, tasting, feeling the positions of joints and the tension of muscles, balance, temperature, pain... -- begins with the stimulation of sensory neurons. Each sense involves highly evolved cells which are sensitive to a particular stimulus: Pain receptors respond to certain chemicals produced when tissues are damaged. Touch receptors involve cells with hairs which, when bent, cause signals to travel down the cell's axon. Balance, movement, and even hearing involve similar hair cells. Temperature sensitive neurons response to heat and cold. Taste and smell receptors respond to environmental molecules in the same way that other neurons respond to neurotransmitters. And the neurons of the retina respond to the presence of light or the specific frequency ranges of light we perceive as color.
But perception is more than just passive reception of information. Perception is an active process: Touch, for example, requires movement - something that nowadays we call "scanning." Touch includes information about you (e.g. your muscles, joints) as well as about what you are touching. We can say the same about hearing. We should really call it listening! The sound itself is intrinsically moving, of course - it is constantly changing. If it didn’t, we would stop hearing it!
And the same is true about vision. Vision involves constant movement - of our eyes, head, and body, or of the things we see or all of the above. The outer parts of our retina are particularly sensitive to motion, so when something comes into our field of vision, our attention is drawn to it. Even the fact that we have two eyes (binocular vision) is a kind of movement: The two views are slightly different, as if we had moved a few inches to the left or right. If we kept our eyes and the scene we are looking at perfectly still, everything would all become white!
As most of us have discovered, there are few truths in this universe that are objective. Most of our knowledge is gained through perception, whether it be seeing, listening, touching, smelling, or anything else. The question here is, how reliable are our perceptions? Can we honestly say that we have true knowledge of anything, when we know so little about how the brain functions? Descartes may be able to say ‘I think, therefore I am’, but does that mean we can say ‘I see, therefore I know’? Are there situations where seeing doesn’t mean believing, and perceiving doesn’t mean knowing? We as humans claim to know a lot about our own bodies; however, the brain as an organ remains mainly obscure to us. Hence, there are several ‘special’ cases that stand out when one analyzes the reliability of our senses.

The first limitations come with vision. Human beings gain most of their knowledge from vision, as they get a clear sense of the world surrounding them through sight. From various cases discussed by Dr.Ramachandran, one can observe that vision does not consist merely of seeing, and in fact, there are a number of other activities that go on in one’s brain when one is ‘seeing’. When a person goes blind, everyone would expect them to lose all vision. But as mentioned previously, seeing itself is only a small part of vision. In one case example, a woman named Diane became completely blind, yet she was still able to perform certain functions that one would expect only a person capable of seeing to do. This provides evidence that the sense of vision requires a lot more than seeing, for there is a much more complex series of processes that allow one to perceive visually without the ability to see.

Another fascination phantom of the brain to do with vision was the case in Dr.Ramachandran’s documentary, about a young man who faced an accident, and started believing that his parents were imposters. He would constantly be comparing his ‘imposter mother’ to his ‘real mother’; when in reality they were the same person. I found this case to be extremely thought provoking. There are so many extraterrestrial movies about imposters and aliens, and in every scenario the person facing these visual illusions is observed by society to be psychotic. In this documentary, his illusions were explainable again, by one of the various processes that go into the act of vision. Although Dr.Ramachandran explained such cases scientifically, the paranoid side of me wonders whether or not we really know the answers. Scientists claim to know a lot about the brain, which still remains a mystery, so how can we claim to know the explanations of a case as drastic as this? Who are we to judge whether or not his parents are imposters?