One of the more positive aspects of the development of brain-machine interfaces — the technology of linking mind and mechanism — is the promise of allowing paralyzed individuals to regain their mobility through controlling machines via their thoughts. While there has been a great deal of progress in this field over the last few years, one program appears to have had an unexpected effect on the subjects involved, where the individuals were able to regain sensation in, and control of, their paralyzed limbs after learning to use the equipment.
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Modern science assumes that our consciousness is generated solely by electro-chemical processes in the brain, a fortunate byproduct of billions of neurons recording and processing sensory information as it comes in. But that view comes into question if one take into account stories from ancient traditions of astral travel, and more modern accounts of out-of-body experiences by individuals that live at the edge of reality as we know it. But how can we determine which of these views is correct, or if there is a shade of gray involved somewhere between the two? Perhaps the answer, or maybe an even better question, can come from rare cases where otherwise normal individuals have what might be considered insufficient brain matter to properly function.
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Of all the illnesses that one might have to face throughout life, one of the most frightening is that of experiencing a stroke, where a circulatory problem in the brain delivers either too much or too little blood flow to a given region, resulting in impairment in that part of the brain. The effects can be life-changing, resulting in the loss of various functions in the patient, including impairment of vision, speech, and motor functions. However, a new study from Stanford University may be offering researchers a new glimpse into how the brain heals itself, using a stem cell therapy that triggered profound healing effects in its patients, including giving one formerly wheelchair-bound individual the ability to walk again.
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