Their crisscrossing paths and collective efforts have nonetheless led to a clear - eyed understanding of how neurons — the brain's cellular building blocks — form and function and how ion - conducting channels control the flow of
electrical signals through the nervous system.
One goal in neurobiology is to understand how the flow of
electrical signals through brain circuits gives rise to perception, action, thought, learning and memories.
Further experiments that tracked
electrical signaling through the neurons corroborated the result.
Not exact matches
Through their
electrical signals plants show how they are responding to their environment.»
Biosensors work by detecting a biological element (enzymes, whole cells or affinity biomolecules such as antibodies) and relaying the information
through an
electrical, optical or thermal
signal.
We might think that the brain works in a similar way to a computer: after all, even computers work
through electrical signals.
«The protein travels by diffusion
through the cells like
electrical signals travel
through the brain,» Zeng says.
This device allows the activation of any environmental instrument
through specific
electrical brain
signals selected at will.
If two adjacent neurons produce that protein, they join up, forming a synapse
through which
electrical signals can flow.
The neuron accumulates its incoming
electrical signals from connecting neurons
through several terminals, and generates a short
electrical pulse, known as a spike, when its threshold is reached.
Special heart cells create
electrical signals that cause the heart's upper and lower chambers to beat in the proper sequence to pump blood
through the body.
Ultimately, these neurons form a circuit between the brain and the target tissue
through which chemical and
electrical signals are relayed.
Once the nanoparticles squeezed
through the barrier and the mouse was exposed to a weak magnetic field, the critter's brain responded by firing
electrical signals.
Neuroprosthetics can not only be controlled
through electrical signals in the brain, but may soon provide sensory information
through brain - machine - brain interfaces.
They're what gives the device its ability to decode the complex «language» of the brain, expressed
through the
electrical signals of large groups of neurons.
The brain controls movement by sending
electrical signals to our muscles
through nerve cells.
A film with higher resistance has lower
electrical conductivity, meaning that more voltage must be applied to send a
signal through it, which further degrades the material.
Electrical recordings of
signals transmitted from the hippocampus suggested that the animals had developed place cells — cells that are believed to convey a sense of location — and that these cells were firing when an animal passed
through a familiar place.
This may help us to understand how processes such as learning and memory formation, which require long - term changes in the brain, arise from the short bursts of
electrical activity
through which neurons
signal to each other,» Greenberg said.
The retina sits at the back of the human eye, and contains protein cells that convert light into
electrical signals that travel
through the nervous system, triggering a response from the brain, ultimately building a picture of the scene being viewed.
Now, an international group led by Prof. Danny Porath of the Hebrew University of Jerusalem reports reproducible and quantitative measurements of electricity flow
through long molecules made of four DNA strands,
signaling a significant breakthrough towards the development of DNA - based
electrical circuits.
Some of the pinpointed genes are known to be involved in the function of synapses, tiny connectors that allow brain cells to communicate with each other
through electrical and chemical
signals.
Then they pulsed
electrical current — similar to the current in a brain —
through each slice and measured the strength of the
electrical signal in the synapses.
During the renal denervation procedure with the Symplicity device used in this trial, a catheter is threaded
through arteries to deliver radiofrequency energy that inactivates kidney nerves, interrupting
electrical signals to and from the kidney, an organ that performs a major role in regulating blood pressure.
These results were achieved
through continual direct epidural
electrical stimulation of the participants» lower spinal cords, mimicking
signals the brain normally transmits to initiate movement.
«After a year of sound deprivation, we observed dramatic changes in the inner ear — notably, a significant loss of the synaptic connections
through which the sensory cells send their
electrical signals to the brain,» Dr. Maison said.
Then they take a photo of a person's face, transform the image into a pattern of
electrical signals, and feed the
signals to the neurons
through the electrodes.
It then conducts any
electrical signals from the neuron up
through the micropipette, and into a computer via the conductive fluid.
Neurons communicate with each other
through chemical and
electrical signals that can be excitatory (activating) or inhibitory (deactivating), depending on their class: Pyramidal cells are excitatory neurons whilst interneurons are inhibitory.
They listen,
through your scalp, for the incredibly weak remnants of
electrical signals from your brain activity.
But to reveal synapses — the minute
signalling junctions
through which
electrical or chemical
signals flow — nanometer - resolution electron microscopy is required.
electrode A device that conducts electricity and is used to make contact with non-metal part of an
electrical circuit, or that contacts something
through which an
electrical signal moves.
[emphasis mine] Now the team has published a paper which suggests that
electrical signals pass
through the nanotubes and that a «gap junction» enables transmission to nonadjacent cells.
Yet its rate remains fairly regular, thanks to
electrical signals that travel as waves from cell to cell
through the heart.
PEMF uses
electrical energy to direct a series of magnetic pulses
through injured tissue, and each magnetic pulse induces a tiny
electrical signal that stimulates cellular repair by upregulating a tissue repair protein called «heat shock protein» and also by increasing the uptake of oxygen and nutrients into tissue.
In the case of bone healing, PEMF uses
electrical energy to direct a series of magnetic pulses
through injured tissue whereby each magnetic pulse induces a tiny
electrical signal that stimulates cellular repair.
Excitation - contraction coupling describes the way in which the
electrical signal sent
through the nervous system leads to muscular contractions at the sarcomere level.
This section provides a discussion of excitation - contraction and how
electrical signals sent
through the nervous system lead to muscular contractions at the sarcomere level.
Almost one third of the brain is composed of neurons, cells that transmit information
through electrical and chemical
signals with a seemingly unconscious intelligence.
The
electrical signal is then carried
through the atrioventricular (AV) node into the ventricles, causing them to contract.
These currents can be «musical,» like the
signals running
through loudspeaker cables; or they can come from
electrical activity in the infrastructures of buildings or cities.
«They can count, learn and remember; nurse sick neighbors; warn each other of danger by sending
electrical signals across a fungal network known as the «Wood Wide Web» — and, for reasons unknown, keep the ancient stumps of long - felled companions alive for centuries by feeding them a sugar solution
through their roots.»
In electroencephalography, or EEG, electrodes measure the
electrical signals produced by the brain's neurons
through the scalp.
The diaphragm is normally suspended between two perforated plates, and an
electrical signal is then passed
through the plates to move the diaphragm in a push - pull manner towards one of them.
It does this by measuring the
electrical resistance in your body, by sending a
signal from the underside of the tracker,
through your arm, and to a second metal contact on the top of the tracker, which you need to touch with your finger.
The band monitors
electrical signals that go
through the user's muscles and detects the specific hand and arm gestures.