Human Brain and Computer Essay Example | Topics and Well Written Essays - 1500 words

Human Brain and Computer - Essay Example Possibly, it can be said that the brain is better at doing some specific jobs and the computer is good at doing other jobs. This paper is intended to analyze the benefits and limitations of the metaphor "the brain is often compared to a computer" which is commonly used by many. Before getting into the details it is important to understand why such a comparison was made. Theoretically the brain is a machine just as the heart and kidney. It can be said that the brain is a computer (processor) with neural connections, programmed responses, and a data bank. It has sensors in the body that input information into the computer. It has an output to devices that perform actions, and the brain communicates with these devices through electrical and chemical channels. The comparison of the brain and the computer is a metaphor. In general metaphors are just used to help us better understand things. Or in other words metaphors are used to convey the idea that one thing is similar to another thing. They are useful for helping us understand things, such as mind/body interaction. Metaphors do not mean that both the things compared are one and the same neither is one thing is a substitute for the other. Since several processes in the brain are similar to the computer, it is commonly compared with each other. For instance, both brain and computers use electrical signals to transmit information. Both have a memory which tends to grow over time. With proper instructions given, both brain and computers can learn. Both work based on the energy present. Brain and computers are able to think logically and do math. There are also differences between brain and the computers. For instance, brain uses chemicals such as calcium and sodium to transmit information where as the computer uses electricity. Electrical signals generated in the brain travels much slower when compared to computers. A computer uses switches that are either on or off and works on the binary system, where as the brains do not have such a system. Memory of the brain generally grows by stronger synaptic connections but in a computer it is only possible by adding additional memory chips. The brain needs essential nutrients such as oxygen and sugar for working where as the computer only require electricity or a battery to keep working (faculty.washington.edu, N.D.). Though till date the technology had not grown to replace the brain with a computer, there have been several advantages with the development of this technology. For instance, today it is possible to use computer inputs as substitutes for other sensory inputs, and for outputs to limbs or devices to create movement of neurologically damaged limbs, control the environment by sensing the brain's electrical impulses, and even create limited forms of sight. Besides, great steps are being made in bionics, including artificial hearts that work for longer periods. In recent years study is under progress for replacements for muscle made from specialized ceramic or polymer materials that contract like muscles, which can be triggered by a computer. With this trend of advancement in technology, perhaps one day we could also replace computers with brain (Cole, 2003). A person can do many things which a computer cannot even attempt to do it. A brain beyond doubt has one thing that a computer doesn't and this is a major difference. A brain communicates with itself and the body