What does refractory period mean in psychology?
the period after response to a stimulus during which response to a second stimulus, presented shortly after the first, is delayed.
What is the total refractory period?
The total refractory period is comprised of the (1) absolute refractory period (ARP) or effective refractory period (ERP), which is the period during which an electrical stimulus will not elicit an AP because the membrane is not sufficiently repolarized and sodium channels have not completely recovered; (2) relative …
What is atrial effective refractory period?
The effective refractory period (ERP) is the amount of time in which the cell cannot respond to a new conducted stimulus. This period is how the heart stays in rhythm and prevents arrhythmias. It is made up of Phases 0, 1, 2, and 3.
What is the refractory period and why is it significant?
The refractory period limits the rate at which action potentials can be generated, which is an important aspect of neuronal signaling. Additionally, the refractory period facilitates unidirectional propagation of the action potential along the axon.
What is the refractory period in psychology quizlet?
refractory period. The minimum length of time after an action potential during which another action potential cannot begin. action potential.
What occurs during the refractory period quizlet psychology?
a brief time period after an action potential has been initiated during which an axon is either incapable of generating another action potential. The excitable plasma membrane recovers at this time and becomes ready to respond to another stimulus.
What happens during refractory period action potential?
In its wake, the action potential leaves the Na+ channels inactivated and K+ channels activated for a brief time. These transitory changes make it harder for the axon to produce subsequent action potentials during this interval, which is called the refractory period.
What is refractory period quizlet?
Refractory Period. The period of time following the initiation of an action potential during which it is difficult or impossible to initiate a second action potential.
What happens in refractory period of heart?
After an action potential initiates, the cardiac cell is unable to initiate another action potential for some duration of time (which is slightly shorter than the “true” action potential duration). This period of time is referred to as the refractory period, which is 250ms in duration and helps to protect the heart.
What is refractory period in psychology quizlet?
What happens during the absolute refractory period quizlet?
The absolute refractory period. Represents the time required for the sodium ion channel gates to reset their resting positions. That a second action potential does not occur before the first one has finished.
How does the refractory period of an action potential prevent the initiation of another action potential?
The refractory period keeps the action potential from moving backward down the axon. As the action potential moves from one Node of Ranvier to the next, the inactivated sodium channels in the previous axon segment prevent the membrane from depolarizing again.
What is the refractory period and what purpose does it serve quizlet?
a brief time period after an action potential has been initiated during which an axon is either incapable of generating another action potential. The excitable plasma membrane recovers at this time and becomes ready to respond to another stimulus. You just studied 14 terms!
What is meant by the refractory period quizlet?
What occurs during the refractory period psychology quizlet?
What is the significance of the absolute refractory period of a neuron quizlet?
Terms in this set (15) The period from the initiation of the action potential to immediately after the peak is referred to as the absolute refractory period (ARP) This is the time during which another stimulus given to the neuron will not lead to a second action potential.
What is the difference between the absolute and relative refractory period?
Absolute refractory period of a neuron is the period of time during which no amount of external stimulus will generate an action potential. Relative refractory period is the period of time during which only a large stimulus will generate an action potential.
What are the two types of refractory period?
There are two types of refractory periods; the absolute refractory period, which corresponds to depolarization and repolarization, and the relative refractory period, which corresponds to hyperpolarization.
How does refractory period influence direction of impulse?
It means that once it has started going in a direction (any direction) it cannot go back on itself because the section of the neurone immediately behind the action potential is still repolarising (getting its sodiums and potassiums sorted out again) so an action potential would not be able to be created there.
What are the advantages of the refractory period?
The brain will be able to perceive nerve impulses as separated events since there is a time lag between them.
What happens in the refractory period?
The absolute refractory period of a human muscle fibre is typically between 2.2 and 4.6 ms. The refractory period causes 3 things to occur: The brain will be able to perceive nerve impulses as separated events since there is a time lag between them. The number of generated impulses or repetitive firing rate of a neuron will be limited in a given period of time. The nerve impulses will only travel in one direction.
What is the prognosis of typical atrial flutter (AFL)?
Typical atrial flutter (AFL) is a common atrial arrhythmia that may cause significant symptoms and serious adverse effects, including embolic stroke, myocardial ischemia and infarction, and, rarely, a tachycardia-induced cardiomyopathy resulting from rapid atrioventricular conduction.
What does refractory period, psychological mean?
Abstract.