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What is the response if you increase the stimulus intensity past the threshold level for a neuron?
Wiki User
∙ 13y ago
Try increases dramatically......
Wiki User
∙ 14y ago
Wiki User
∙ 13y agough you generate an action potential
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What stimulus below this intensity will result in no response in a neuron?
Threshold stimulus
Strong stimuli cause the amplitude of action potentials generated to increase?
Yes. ....Up to a point. There is a threshold the stimulus must surpass before creating a CAP (compound action potential). Anything below this threshold is called subthreshold. Once the stimulus is strong enough cause a CAP it is a stimulus threshold. At this point the CAP will continue to increase as the intensity of the stimulus increases (now termed suprathreshold) until a maximal stimulus causes a maximum response. Any stimulus stronger than the maximal stimulus is called a supramaximal and does not result in any larger a CAP than the maximum response caused by the maximal stimulus. source: http://www.unmc.edu/physiology/Mann/mann12.html
The smallest intensity of a stimulus that you can detect 50 percent of the time is?
Absoulute threshold
Minimum level of stimulation required to trigger a neural impulse?
An action potential needs to occur to trigger the neurons but the action potential depends on whether a stimulus is able to bring the membrane potential to a certain level termed the THRESHOLD. This threshold is about -55 mV for most neurons, but the stimulus needs to bring the membrane potential to this certain level or it will not be triggered. Relating to the ALL-OR-NONE PRINCIPLE, which if the threshold is not acquired then an action potential will not occur but once a stimulus is strong enough to depolarize (making the inside of the cell less negative going from -70 mV to -55 mV) it will trigger. The resting potential is -70 mV which the stimulus needs to bring it up to -55mV.
What is threshold in medical terms?
In medical terms (since you categorised your question in "Health"), a threshold is defined as:1 - The minimal stimulus that produces excitation of a human structure (i.e - the minimal stimulus eliciting a motor response).2- The lower limit of perception for a stimulus.3 - The point at which a stimulus produces a sensation.In architectural terms, a threshold is defined as:1- A strip of metal, wood or stone forming the bottom of a doorway.2 - A point of entry or beginning in a building.
What stimulus below this intensity will result in no response in a neuron?
Threshold stimulus
What is meant by coding of stimulus intensity?
Threshold
What can increase a strong stimulus?
threshold stimulus
Strong stimuli cause the amplitude of action potentials generated to increase?
Yes. ....Up to a point. There is a threshold the stimulus must surpass before creating a CAP (compound action potential). Anything below this threshold is called subthreshold. Once the stimulus is strong enough cause a CAP it is a stimulus threshold. At this point the CAP will continue to increase as the intensity of the stimulus increases (now termed suprathreshold) until a maximal stimulus causes a maximum response. Any stimulus stronger than the maximal stimulus is called a supramaximal and does not result in any larger a CAP than the maximum response caused by the maximal stimulus. source: http://www.unmc.edu/physiology/Mann/mann12.html
What is the minimal intensity of stimulation necessary to trigger a muscle contraction?
threshold stimulus
The smallest intensity of a stimulus that you can detect 50 percent of the time is?
Absoulute threshold
What is a pain threshold?
A pain threshold is the point at which a person starts to feel discomfort or pain from a stimulus. It is the level of intensity at which a person perceives a sensation as painful. Different individuals have different pain thresholds.
Just noticeable difference is a constant proportion of the intensity of an initial stimulus is this weber's law?
Yes, that's correct. Weber's law states that the just noticeable difference (JND) between two stimuli is proportional to the intensity of the initial stimulus. This means that the difference needed to perceive a change in stimulus intensity remains constant regardless of the initial intensity level.
What is the smallest increase or increase in the intensity of a stimulus a person can detect?
just noticeable difference
How does the threshold stimulus influence muscle contraction?
The threshold stimulus is the stimulus required to create an action potential. So any stimulus under this level will not cause muscle contraction, while a stimulus above this level will cause the muscle to contract. The higher the stimulus the more muscle fibers are recruited, and thus the higher the response.
What is the all none law of muscle response?
all-or-none law is the principle that the strength by which a nerve or muscle fiber responds to a stimulus is not dependent on the strength of the stimulus. If the stimulus is any strength above threshold, the nerve or muscle fiber will give a complete response or otherwise no response at all
The minimum stimulus needed to cause a contraction is called the?
threshold stimulus
