What happens during the refractory period of a neuron?
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 does refractory period mean in psychology?
psychological refractory period (PRP) the period after response to a stimulus during which response to a second stimulus, presented shortly after the first, is delayed.
Which channel gets open up after a stimulus is applied?
The opening of sodium channels allows nearby sodium channels to open, allowing the change in permeability to spread from the dendrites to the cell body.
How is the refractory period of a neuron related to firing precision?
Furthermore, the neuronal membrane is refractory immediately after a spike, so that the firing probability depends not only on the stimulus but also on the preceding spike train. To connect these observations, we investigated the relationship between the refractory period of a neuron and its firing precision.
What do you need to know about the refractory period?
Refractory Period 1 Definition. The refractory period of a neuron is the time in which a nerve cell is unable to fire an action potential (nerve impulse). 2 Absolute vs Relative Refractory Period. 3 Effective Refractory Period. 4 Refractory Period in Psychology.
How does refractoriness affect the performance of neurons?
Refractoriness, although often thought to limit the performance of neurons, may in fact benefit neuronal reliability. The underlying free firing rate derived by allowing for the refractory period often exceeded the observed firing rate by an order of magnitude and was found to convey information about the stimulus over a much wider dynamic range.
How does the refractory period affect the spike train?
When a neuron is firing near its maximum rate, this refractoriness causes the spike train to become more regular than a Poisson process with the same firing rate. Thus, we asked whether the refractory period plays an important role in setting the response precision of retinal ganglion cells.
