Patients with SCI underwent 30 minutes
of electrical nerve stimulation therapy five days a week for six weeks on one limb.
Not exact matches
They send a high level
of electrical impulses from peripheral
nerve endings to the brain, which could produce an anti-depressant effect.
His fate changed after a friend
of his father's loaned him a machine called a TENS, short for transcutaneous
electrical nerve stimulation.
Reductionist analyses are analyses
of the objective aspects
of living organisms such as the conduction
of electrical impulses in
nerves or the biochemistry
of the formation
of blood.
A mechanistic physiologist analyses my sitting at my word processor in terms
of light waves hitting my retina from the keyboard and the screen which then set in train chemical and
electrical processes in my
nerves and brain.
In animal studies, too much fibrin in the central nervous system has been associated with breakdown
of the myelin sheath that surrounds the
nerves and allows them to conduct
electrical signals properly.
I had only paracetamol and a TENS (transcutaneous
electrical nerve stimulation) machine for pain relief and the water,
of course.
Increased plasma levels
of oxytocin in response to afferent
electrical stimulation
of the sciatic and vagal
nerves and in response to touch and pinch in anaesthetized rats.
A recent study comparing women's choices
of pain relief in midwife - led and consultant - led units in Ireland showed that when women were offered other options such as hydrotherapy and transcutaneous
electrical nerve stimulation, fewer women chose epidural analgesia [9].
Traditional implants rely on a series
of electrodes that lie directly against the membrane
of the inner ear, and use
electrical signals to stimulate the auditory
nerves lying beneath.
Neuroscience focused on the nuts and bolts
of the brain: how
nerve cells communicate with
electrical and chemical pulses, how brains learn and calculate and remember.
When Sørensen used the hand to grasp an object,
electrical signals from the pressure pads fired directly into his
nerves, giving him a sense
of touch.
The nonsense in dreams is caused by random
electrical noise in
nerve cells, asserted Hobson, a kind
of cellular static; repression had nothing to do with it.
Nerve cells communicate by means
of electrical impulses, which are transmitted along neural processes known as axons.
An electrode «cuff» that clamps around the outside
of nerve bundles is also being tested but because the electrodes don't enter the
nerves, greater changes in
electrical input are needed for stimulation.
For the first time, a person who lost his hand has had a near - natural sense
of touch restored thanks to a prosthesis that delivers
electrical signals straight to individual
nerves.
Contracting muscles
of the heart, diaphragm and limbs; ion pumps that maintain the
electrical properties
of nerves; and biochemical reactions that break down food and synthesize new tissues (to name a few) generate body heat continuously.
So far, researchers with the Allen Institute for Brain Science in Seattle have described the intricate shapes and
electrical properties
of about 100
nerve cells, or neurons, taken from the brains
of 36 patients as they underwent surgery for conditions such as brain tumors or epilepsy.
In a human brain, 85 billion
nerve cells communicate via trillions
of connections using complex patterns
of electrical jolts and more than 100 different chemicals.
Scores
of laboratories at universities and in private industry are uncovering how to use these cells, which transform into neurons, astrocytes (the cells that regulate transmission
of electrical impulses in the brain) and oligodendrocytes (which insulate
nerve fibers with a fatty coating).
When the recipient operates the device, it applies a continuous
electrical current — at varying frequencies and intensities — to specific regions in the lower spinal cord where there are dense bundles
of nerves that control the hips, knees, ankles and toes.
In comparison, rats given the same chemical and
electrical treatment but trained on a treadmill were unable to move voluntarily as there was no regrowth
of nerve fibres.
The disability score ranged from 0 (no disability) to 88 (severely disabled) and incorporated measurements
of sensation, muscle power, tendon reflexes and
electrical activity in the leg
nerves.
As long as the pulse activates enough
nerves it will have performed its role, but as each waveform uses a different amount
of electrical energy, it's possible that implants could be putting out unnecessarily strong pulses that waste precious battery power.
Instead, they translate sound into
electrical signals that are used to electrically stimulate the cochlea — a spiral - shaped part
of the inner ear attached to the auditory
nerve.
That's when two researchers at Uppsala University, Åke Vallbo and Karl - Erik Hagbarth, discovered the process
of microneurography and used it to record
electrical impulses from people's peripheral
nerves.
The same information can be represented as lines on paper, as
electrical charges inside a PC's memory banks or as the strength
of the synaptic connections among
nerve cells.
Instead, the triangular module applies pulsed
electrical currents to the electrodes, targeting
nerves on the face and neck that then modulate some
of the hormones underlying the fight - or - flight response.
This fatty material is an insulator covering and modulating a part
of the
nerve cell called the axon, which transmits
electrical signals to other cells.
On one level, there's the dynamics
of electrical currents that constitute the main signaling method
of the brain's
nerve cells.
Nerve cells exchange information with each other in the form
of electrical signals via so - called synapses.
Commercial versions typically employ an array
of electrodes, each
of which channels
electrical signals corresponding to a different pitch toward the auditory
nerve.
A man in a vegetative state for 15 years has been able to open his eyes, move his head, and even try to smile, after
electrical stimulation
of his vagus
nerve
In their study, Mazzolini and co-workers found that depending on the region
of the cell being hit by the light, the
electrical response
of the
nerve changes.
Until recently, it was unclear how the physical pressure
of a light touch gets transduced from a mechanical force to an
electrical nerve signal in Merkel discs.
This fatty substance ensures
electrical conductivity
of the
nerve fibers.
Electrodes are surgically implanted into or on top
of target
nerve fibres, ready to sense
electrical signals from neural activity or to deliver electric current that mimics the language
of the nervous system.
It's the
electrical output
of these
nerve cells that puts the fly to sleep.»
«According to the theory
of this ion mechanism, the
electrical signal leaves an inactive region in its wake, and the
nerve can only support new signals after a short recovery period
of inactivity.
The wires enabled the researchers to monitor the
electrical activity
of individual
nerve cells in the medial temporal lobe and to detect neurons that would respond more to the perception
of one person than to that
of another.
Researchers at the Niels Bohr Institute at the University
of Copenhagen have now conducted experiments that raise doubts about this well - established model
of electrical impulses along the
nerve pathway.
The answer is that they all affect the ability
of nerves to transmit
electrical impulses by affecting the ion channels in
nerves.
Based on years
of scientific research into the root causes
of the condition, the device uses precisely timed sounds and weak
electrical pulses that activate touch - sensitive
nerves, both aimed at steering damaged
nerve cells back to normal activity.
In brain research, these tools have been used successfully to regulate individual
nerve cells in millisecond time scale using light instead
of electrical stimulus.
Specifically, the research sheds light on the role
of RPM - 1 in the development
of axons or
nerve fibers — the elongated projections
of nerve cells that transmit
electrical impulses away from the neuron via synapses.
In an electroencephalogram (EEG)-- a recording
of the brain's
electrical activity — the synchronous rhythm
of the
nerve cells manifests as a periodic pattern.
In cases
of severe to profound hearing loss where there is no benefit from conventional amplification (i.e. hearing aids), cochlear implantation that uses direct
electrical stimulation
of the auditory
nerve has proven successful and selected older patients are among those who can benefit, according to the study background.
Our studies help us to understand how the
nerve cells in the entorhinal cortex operate and how
electrical activities might get interrupted in this area
of the brain.»
«We measured the
electrical activity
of groups
of nerve cells within the subthalamic nucleus in patients with Parkinson's disease, who had recently been treated with deep brain stimulation.
Several groups
of fish have evolved the capacity to generate
electrical pulses from specialised «electric organs», derived from either muscle tissue or
nerve tissue.