Animals

Why Can't We Reverse Nerve Damage?

Science has made incredible strides in improving the way our body heals, except when it comes to nerves. What makes nerves so hard to fix?

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Mind-Controlled Prosthetic Arm Move Individual 'Fingers' (Science Daily)
"Physicians and biomedical engineers from Johns Hopkins report what they believe is the first successful effort to wiggle fingers individually and independently of each other using a mind-controlled artificial "arm" to control the movement."

The Many Ills of Peripheral Nerve Damage (The New York Times)
"If you have ever slept on an arm and awakened with a "dead" hand, or sat too long with your legs crossed and had your foot fall asleep, you have some inkling of what many people with peripheral neuropathy experience day in and day out, often with no relief in sight."

Nerve Regeneration (Brown University)
"At the core of the human nervous system, a control system of the body, is the central nervous system (CNS), which is composed of the brain and spinal cord. Using electrical signals that travel from the CNS through the peripheral nervous system (PNS), the brain controls effector cells, which carry out the physiological responses 'requested' by the brain. Thus, the nervous system is a 'wired' communication system of the body."

Regenerating nerve tissue in spinal cord injuries (Science Daily)
"Researchers are exploring a new therapy using stem cells to treat spinal cord injuries within the first 14 to 30 days of injury. The therapy uses a population of cells derived from human embryonic stem cells containing progenitor cells that support nerve cells and can potentially make poorly functioning nerves function better."