Sunday, October 18, 2009

Cyborg

A cyborg is a cybernetic organism (i.e., an organism that has both artificial and natural systems). The term was coined in 1960 when Manfred Clynes and Nathan Kline used it in an article about the advantages of self-regulating human-machine systems in outer space. D. S. Halacy's Cyborg: Evolution of the Superman in 1965 featured an introduction which spoke of a "new frontier" that was "not merely space, but more profoundly the relationship between 'inner space' to 'outer space' -a bridge...between mind and matter." The cyborg is often seen today merely as an organism that has enhanced abilities due to technology, but this perhaps oversimplifies the category of feedback.
Fictional cyborgs are portrayed as a synthesis of organic and synthetic parts, and frequently pose the question of difference between human and machine as one concerned with morality, free will, and empathy. Fictional cyborgs may be represented as visibly mechanical (e.g. the Cybermen in the Doctor Who franchise or The Borg from Star Trek); or as almost indistinguishable from humans (e.g. the "Human" Cylons from the re-imagining of Battlestar Galactica). The 1970s television series the Six Million Dollar Man featured one of the most famous fictional cyborgs. Cyborgs in fiction often play up a human contempt for over-dependence on technology, particularly when used for war, and when used in ways that seem to threaten free will. Cyborgs are also often portrayed with physical or mental abilities far exceeding a human counterpart (military forms may have inbuilt weapons, among other things).
Real (as opposed to fictional) cyborgs are more frequently people who use cybernetic technology to repair or overcome the physical and mental constraints of their bodies. While cyborgs are commonly thought of as mammals, they can be any kind of organism.

Individual cyborgs
Generally, the term "cyborg" is used to refer to a man or woman with bionic, or robotic, implants.
In current prosthetic applications, the C-Leg system developed by Otto Bock HealthCare is used to replace a human leg that has been amputated because of injury or illness. The use of sensors in the artificial C-Leg aids in walking significantly by attempting to replicate the user's natural gait, as it would be prior to amputation. Prostheses like the C-Leg and the more advanced iLimb are considered by some to be the first real steps towards the next generation of real-world cyborg applications. Additionally cochlear implants and magnetic implants which provide people with a sense that they would not otherwise have had can additionally be thought of as creating cyborgs.
In 2002, under the heading Project Cyborg, a British scientist, Kevin Warwick, had an array of 100 electrodes fired in to his nervous system in order to link his nervous system into the internet. With this in place he successfully carried out a series of experiments including extending his nervous system over the internet to control a robotic hand, a loudspeaker and amplifier. This is a form of extended sensory input and the first direct electronic communication between the nervous systems of two humans.
Cyborg proliferation in society
In medicine
In medicine, there are two important and different types of cyborgs: these are the restorative and the enhanced. Restorative technologies “restore lost function, organs, and limbs”. The key aspect of restorative cyborgization is the repair of broken or missing processes to revert to a healthy or average level of function. There is no enhancement to the original faculties and processes that were lost.
On the contrary, the enhanced cyborg “follows a principle, and it is the principle of optimal performance: maximising output (the information or modifications obtained) and minimising input (the energy expended in the process) ”. Thus, the enhanced cyborg intends to exceed normal processes or even gain new functions that were not originally present.
Although prostheses in general supplement lost or damaged body parts with the integration of a mechanical artifice, bionic implants in medicine allow model organs or body parts to mimic the original function more closely. Michael Chorost wrote a memoir of his experience with cochlear implants, or bionic ear, titled "Rebuilt: How Becoming Part Computer Made Me More Human." Jesse Sullivan became one of the first people to operate a fully robotic limb through a nerve-muscle graft, enabling him a complex range of motions beyond that of previous prosthetics. By 2004, a fully functioning artificial heart was developed. The continued technological development of bionic and nanotechnologies begins to raise the question of enhancement, and of the future possibilities for cyborgs which surpass the original functionality of the biological model. The ethics and desirability of "enhancement prosthetics" have been debated; their proponents include the transhumanist movement, with its belief that new technologies can assist the human race in developing beyond its present, normative limitations such as aging and disease, as well as other, more general incapacities, such as limitations on speed, strength, endurance, and intelligence. Opponents of the concept describe what they believe to be biases which propel the development and acceptance of such technologies; namely, a bias towards functionality and efficiency that may compel assent to a view of human people which de-emphasises as defining characteristics actual manifestations of humanity and personhood, in favour of definition in terms of upgrades, versions, and utility.
One of the more common and accepted forms of temporary modification occurs as a result of prenatal diagnosis technologies. Some modern parents willingly use testing methods such as ultrasounds and amniocentesis to determine the sex or health of the fetus. The discovery of birth defects or other congenital problems by these procedures may lead to neonatal treatment in the form of open fetal surgery or the less invasive fetal intervention.
A brain-computer interface, or BCI, provides a direct path of communication from the brain to an external device, effectively creating a cyborg. Research of Invasive BCIs, which utilize electrodes implanted directly into the grey matter of the brain, has focused on restoring damaged eye sight in the blind and providing functionality to paralysed people, most notably those with severe cases, such as Locked-In syndrome.
Retinal implants are another form of cyborgization in medicine. The theory behind retinal stimulation to restore vision to people suffering from retinitis pigmentosa and vision loss due to aging (conditions in which people have an abnormally low amount of ganglion cells) is that the retinal implant and electrical stimulation would act as a substitute for the missing ganglion cells (cells which connect the eye to the brain).
While work to perfect this technology is still being done, there have already been major advances in the use of electronic stimulation of the retina to allow the eye to sense patterns of light. A specialized camera is worn by the subject (possibly on the side of a their glasses frames) the camera converts the image into a pattern of electrical stimulation. A chip located in the users eye would then electrically stimulate the retina with this pattern and the image appears to the user. Current prototypes have the camera being powered by a hand sized power supply that could be placed in a pocket or on the waist.
Currently the technology has only been tested on human subject for brief amounts of time and the amount of light picked up by the subject has been minimal. However, if technological advances proceed as planned this technology may be used by thousands of blind people and restore vision to most of them. Robot assisted surgery is another way cyborgs are being integrated into medicine

In the military
Military organizations' research has recently focused on the utilization of cyborg animals for inter-species relationships for the purposes of a supposed a tactical advantage. DARPA has announced its interest in developing "cyborg insects" to transmit data from sensors implanted into the insect during the pupal stage. The insect's motion would be controlled from a MEMS, or Micro-Electro-Mechanical System, and would conceivably surveil an environment and detect explosives or gas. Similarly, DARPA is developing a neural implant to remotely control the movement of sharks. The shark's unique senses would be exploited to provide data feedback in relation to enemy ship movement and underwater explosives.
 
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