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What happens to a neuron when a stimulus reaches the threshold level?
It simply and completely self destructs. You see, once the threshold is reached it no longer can sustance its physical structure due to power surges. This results in an power overload just like when a star such as the sun reaches critical level and eventually explodes resulting in a Supernova.
What is the trigger point at which a neuron will fire called?
Its where there are a lot of sodium channels. Once the trigger zone is 'triggered' to threshold (from -70mV to -55mv), then an action potential occurs. trigger zone in MOTOR neurons are in the axon hillock and in SENSORY neurons, they're in the 1st unmyelinated area (first node of ranvier).
The minimum stimulus needed to cause a contraction is called the?
The minimum stimulus needed to cause a contraction is called the threshold stimulus. This is the minimal level of stimulation required to activate muscle fibers and initiate a contraction response.
What are the key factors that influence the generation and propagation of action potential in neurons?
The key factors that influence the generation and propagation of action potential in neurons are the balance of ions inside and outside the cell, the opening and closing of ion channels, and the threshold level of stimulation needed to trigger an action potential.
What does sensation level mean?
The sensation level is measured in decibels. It is frequency specific and starts at 0 dB SL (sensation level) where 0 dB SL is the softest the patient can here a specific frequency. This means that the SL will be different for different people. Everyone's SL will start at 0 but my SL at 1000 Hz may be at 23 db IL and another's may be at 54 db IL.Put more simply, dB SL is the difference between a person's threshold of hearing and the presentation level of a stimulus. If a person's speech reception threshold (SRT) is 10 dB on an audiometer (dB HL) and you present a speech stimulus to them at 50 dB HL on the audiometer, their sensation level would be derived thus: 50 dB (presentation level) minus 10 dB (threshold), which equals a sensation level of 40 dB SL. This is also the procedure for a frequency-specific stimulus (e.g. pure tones): subtract the audiometric threshold (dB HL) from the supra-threshold presentation level (dB HL) and the difference is the sensation level (dB SL).
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 does threshold means in respect to neurons response?
In the context of neurons, the threshold refers to the level of stimulation needed to generate an action potential or nerve impulse. Once the input signal surpasses this threshold, the neuron will fire and transmit an electrical signal down its axon. Below the threshold, the neuron remains inactive.
What happens to a neuron when a stimulus reaches the threshold level?
It simply and completely self destructs. You see, once the threshold is reached it no longer can sustance its physical structure due to power surges. This results in an power overload just like when a star such as the sun reaches critical level and eventually explodes resulting in a Supernova.
What does it mean when I'm over the threshold when making a payroll tax payment?
A threshold for a tax payment is a level above which some provision of the tax is applicable. So when you are "over the threshold" you have reached a level where some addtional aspect of payroll tax applies to you.
Minimum level of stimulation required to trigger a neural impulse?
The minimum level of stimulation required to trigger a neural impulse is known as the "threshold." This threshold is the minimum amount of neurotransmitter release or electrical stimulation needed to generate an action potential in a neuron. Below this threshold, the neuron will not fire an action potential.
What stimulus below this intensity will result in no response in a neuron?
Any stimulus below the neuron's threshold potential will not result in a response, as it is not strong enough to generate an action potential. Neurons require a minimum level of stimulus intensity to reach the threshold potential and fire an action potential.
What is the trigger point at which a neuron will fire called?
Its where there are a lot of sodium channels. Once the trigger zone is 'triggered' to threshold (from -70mV to -55mv), then an action potential occurs. trigger zone in MOTOR neurons are in the axon hillock and in SENSORY neurons, they're in the 1st unmyelinated area (first node of ranvier).
What happens when someone's brain has a low level of neurotransmitters?
Neurons aren't able to communicate with each other.
What happens when someone brain has a low level of neurotransmitters?
Neurons aren't able to communicate with each other.
What happens when someone's brain has a low level of neurotransmitter?
Neurons aren't able to communicate with each other.
What happens when someones brain has a low level of neurotransmitter?
Neurons aren't able to communicate with each other.
What happens when someone brain has a low level of neurotransmitter?
Neurons aren't able to communicate with each other.
