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Neurons are nerve cells, and they fire to relay messages from neuron to neuron. Neurons fire when a charge jumps across a synapse to the dendrite of a cell. The neuron then fires the charge down it's axon, and the charge travels to the next neuron.
Wiki User
∙ 9y ago
Wiki User
∙ 9y agoWhen a neuron fires, part of the neural membrane opens so that positively charged ions go inside the cell and negatively charged ions leave out. causes a rapid increase in the positive charge of the nerve fiber. This sends out an impulse, and the sodium channels open and the positive sodium cells surge into the cell. After the neuron fires, the potassium channels reopen and the sodium channels close, gradually returning the neuron to its resting potential.
Wiki User
∙ 12y agoA neuron will propagate an action potential as soon as the threshold level for that neuron is reached. In most neurons this is about -50mV, this is when there has been a large enough stimuli to depolarize the membrane enough to cause an influx of Sodium ions and cause a full action potential.
Wiki User
∙ 10y agoNeurons fire when there is an action potential. This means that the neural membrane opens and allows positively charged ions inside the cell and negative ions out.
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How might mirror neurons play a part in observational learning?
Mirror neurons play a part in observational learning because these neurons use modeling as a form of learning. They fire neurons whether a person is performing an action or just observing it.
How does the CNS know weather a stimulus is strong or weak?
Nerves do not fire at varying intensities; for example, neurons won't fire at a stronger intensity if you're hit with a baseball in comparison to a marble. The difference between the two stimuli is the number of firing neurons. After being hit with a baseball, the affected neurons will fire more frequently than if hit with a marble.
What type of membrane transport causes the depolarization phase of the action potential in neurons?
Diffusion
When neurons fire and transmit messages they?
sometimes only partially transmit information, depending on signal strength.
What is Amyotrophic lateral schlerosis?
It is an immune disorder that causes the death of neurons which leads to progressive loss of muscular control
What is the best definition for a neurotransmitter?
The chemical messenger of the body is a neurotransmitter. They are chemicals that carry signals between neurons or from neurons to muscles. In the synaptic cleft, impulses are exchanged between two neurons.
What are neurons that fire when an animal observes an action being preformed by another?
Mirror neurons
What is happening when you are thinking?
When you are thinking, your brain is actively processing and organizing information in order to generate ideas, solve problems, or make decisions. This process involves complex neural pathways and connections between different regions of the brain, such as the prefrontal cortex, hippocampus, and basal ganglia. Neurotransmitters and electrical signals facilitate communication between neurons, enabling the cognitive processes that occur during thinking.
Viral disease that causes destruction of motor neurons?
Poliomyelitis
What disease causes neurons in the brain to die?
Alzheimer's disease
How might mirror neurons play a part in observational learning?
Mirror neurons play a part in observational learning because these neurons use modeling as a form of learning. They fire neurons whether a person is performing an action or just observing it.
Do neurons physically changes their position when a person is happy or sad?
No they do not, When you are happy or sad different neurons fire making you feel happy or sad.
How does the CNS know weather a stimulus is strong or weak?
Nerves do not fire at varying intensities; for example, neurons won't fire at a stronger intensity if you're hit with a baseball in comparison to a marble. The difference between the two stimuli is the number of firing neurons. After being hit with a baseball, the affected neurons will fire more frequently than if hit with a marble.
When several neurons are stimulated equally which one will fire first?
The neuron with the lowest threshold potential will fire first when several neurons are stimulated equally. Threshold potential is the minimum level of depolarization needed to trigger an action potential in a neuron. Neurons with lower threshold potentials are more excitable and will fire before neurons with higher threshold potentials.
What type of membrane transport causes the depolarization phase of the action potential in neurons?
Diffusion
what cell carries messages from nerve cells to your brain?
other nerve cells... The brain is made up of nerve cells (also called neurons). There are neurons both in the central nervous system (the brain and spinal cord) and the peripheral nervous system. The communication between neurons occurs with release of neurotransmitters (chemicals that affect the surface of neurons). The release of neurotransmitters occurs when an electrical impulse travels down the neuron and causes the neuron to "fire" off neurotransmitter. This electrical impulse is called an "action potential." The release of neurotransmitter can have one of two possible effects on the "receiving" neuron, depending on which neurotransmitter binds with which neuron. It can make the receiving neuron either more likely to fire (excitatory) or less likely to fire (inhibitory). The result of this activity in billions of neurons creates quite a symphony, including everything we call thought.
Which nervous tissue cells are involved in epilepsy?
Parts of the brain (a nervous tissue) are involved in epilepsy. Some damage of some kind causes the the brain to "fire" irregularly. There are many kinds of epilepsy, see the link below for more information:
