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Why does the number of action potentials vary with increased stimulation frequency?
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What is salutatory conduction?
Saltatory conduction refers to the propagation of action potentials along myelinated axons from one node of Ranvier to the next node. It increases the conduction velocity of action potentials.
Why are fewer action potentials redorded at recording electrodes R2 when TTX is applied between R1 and R2?
Well, it really depends on the numbers. Not to mention, it also depends on the situation they are in also.
What means Mutual action of two waves of the same frequency reinforcing or neutralizing each other?
Interference :)
Is there a action for every reaction?
Yes. Action and Re-action are relative, to how the problem is described. You can start with the reaction and find the action or start with the action and find the reaction.
What is the nickname of Newton's third law?
"Action and reaction", or "For every action there is a reaction"."Action and reaction", or "For every action there is a reaction"."Action and reaction", or "For every action there is a reaction"."Action and reaction", or "For every action there is a reaction".
Nerve impulse consists of a wave of moving away from a point of stimulation?
action potentials
Receptors provide information about the intensity of a stimulus through?
the frequency of their action potentials
The area of the skin where stimulation generates action potentials in a particular sensory neuron is called that neuron's?
receptive field
What does the central nervous system use to determine the strength of a stimulus?
frequncy of action poteinals
How do action potentials relay intensities of information?
The nervous system can detect the strength of a stimulus by measuring the frequency of action potentials . For example a hard hit might generate 10 impulses per second.
Do action potentials in the same neuron come in different sizes and shapes?
Yes, but that is not relevant. The important thing is the frequency of action potential
What is the Difference between a weak stimulus and intense stimulus?
The FREQUENCY of action potentials that are conducted into the central nervous system serves as the code for the strength of the stimulus. This frequency code is needed because the amplitude of action potentials is constatnt (all or none). Acting through changes in action potential frequency, tonic receptors thus provide information about the relative intensity of a stimulus.
An intensely painful stimulus is distinguished from a mildly painful one by:?
a higher frequency of action potentials initiated.
How did the action potential generated with the unheated rod compare to the generated with the heated rod?
Heat information is conducted through neurones. Higher frequency action potentials are perceived in the brain as a hotter stimulus. So the heated rod would have sent higher-frequency action potentials than the cool rod would have.
Why do not action potentials occur during the repolarization phase?
It has to do with what types of channels are open during this phase. In the repolarization phase the number of potassium channels are increased and the number of sodium channels are decreased. This allows for action potentials to not occur. Otherwise, the action potentials would add up and produce tetany.
Given that action potentials traveling down the axon of a particular neuron are always the same amplitude how is a stronger stimulus communicated to the next cell in the neural pathway?
The strength of a stimulus is coded in the frequency of action potentials, not in the amplitude.
How is intensity determined in neural firing?
Intensity is determined by the frequency of action potentials. The higher the intensity, the higher the frequently.
