Sentences with phrase «by neurons sending»

Not exact matches

Modafinil also indirectly alters the action of glutamate, the main neurotransmitter used by neurons in the brain to send signals down the line.

When a neuron sends a message it releases the neurotransmitter serotonin, which is detected by the next neuron receiving the message.

The Northwestern team, led by physiologist James Surmeier, reports in the online edition of Nature that the dopamine neurons, which are targeted by Parkinson's, are constantly at work — like a pacemaker — sending the striatum nonstop, electrical pulses.

In a small study of healthy twentysomethings the scientists showed they could make neurons more or less excitable by sending weak electrical currents through the brain's motor cortex.

Many antidepressants that target serotonin work by blocking serotonin transporters that reabsorb the neurotransmitter into a neuron, so it can be reused after it has sent a chemical signal.

Implanted devices send targeted electrical stimulation to the nervous system to interfere with abnormal brain activity, and it is commonly assumed that neurons are the only important brain cells that need to be stimulated by these devices.

Each glomerulus — «a ball of axons and dendrites,» according to Albeanu — is a junction where axons from sensory neurons meet up with and connect, or synapse, with dendrites sent from the next processing layer in the bulb, populated by mitral cells.

Her research suggested that T cells can also send signals that activate the brain's resident immune cells, microglia and blood - borne macrophages, telling them to protect the injured neurons from toxins released by the injury.

But the brain's skinniest neurons sometimes send out random spikes triggered by ion channel proteins» popping open accidentally.

When these photoreceptors detect light, they send a signal to specialized neurons in the retina called retinal ganglion cells, or RGCs, which then transmit visual information to the brain by firing electrical pulses along the optic nerve.

Neurons, or nerve cells, in the brain communicate with each other by transmitting electric signals, or firing action potentials, through long processes named axons (which send out signals) and dendrites (which receive signals).

Various previous studies had shown that epigenetic remodeling of DNA by methylation or demethylation led to changes located in synapses, where one neuron communicates with another by chemical or electrical signals sent across a small gap.

In general, a neuron spikes, meaning it it sends an electrical signal that travels down a nerve fiber, when cued by a sensory element.

A synapse has three components: a pre-synaptic terminal contributed by the sending neuron, a post-synaptic receptive component contributed by the receiving cell and a synaptic cleft — the space between the pre - and post-synaptic components.

Although signals from the feeling sensory neurons were reduced by 20 percent, they were still active and sending sensation signals to the spinal cord.

The next major advance which moved this analysis from a cell physiological to a molecular level was accomplished by Scheller and Südhof who made overlapping contributions that characterized the proteins that controlled the two key steps of transmitter release: 1) They showed the mechanism by which the vesicle is mobilized to the release sites of the presynaptic terminal, where the synaptic vesicle first fuses with the membrane of the sending neuron and then leaves the cell, and 2) they also discovered how Ca2 + drives the vesicle to release its contents.

The information gathered by your senses is transmitted by nerve cells, or neurons, to specific brain regions where the signal is routed through circuits and sent downstream to areas that essentially translate the information into behavior and get you back on track.

That job is to communicate with other neurons by sending tiny chemical messages from one cell to another.

Researchers have discovered that a new neurotransmitter — a chemical message sent by neurons — exists in the roundworm C. elegans.

Dopamine — this functions as a neurotransmitter which is a chemical released by neurons or nerve cells to send signals to other nerve cells.