Animal Physiology Question 1. Dynamic Range is the range of stimulus intensities over which a receptor...

Animal Physiology Question

1. Dynamic Range is the range of stimulus intensities over which a receptor can respond. Receptors that have a smaller (or narrower) dynamic range have much better discrimination of changes in stimulus intensity than receptors that have a large dynamic range (although I can’t test figures here, you should be able to draw a neuron with a wide vs. narrow dynamic range). Please explain the trade-off between dynamic range and discrimination using the relationship between number of action potentials fired and changes in stimulus intensity for both receptors with narrow vs. large dynamic ranges.

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Expert Solution

Dynamic Range

It is the range of stimulus intensities on to which the receptor can produce a response. Receptors having smaller/ narrow dynamic range provide significantly better discrimination of changes in stimulus intensity as compared to those with a large dynamic range. Dynamic range and its discrimination have a negative degree of correlation. A large dynamic range results in a poor sensory discrimination, whereas the small dynamic range provide an impact with notable sensory discrimination. Though, a range fractionation observed is when a group of receptors work together to intensify the dynamic range without altering the sensory discrimination. A large dynamic range of a receptor comprise of one or more intensity that tend to impact a bigger dynamic range. Despite the fact, a narrow dynamic range has two or more action potential per increase in intensity that reveals a precise degree of discrimination compared to the large dynamic range. Large dynamic range has a large impact in stimulus resulting in a small change in frequency of action potential and narrow dynamic range creates a small change in stimulus leading to a large change in frequency of action potential.

Sydney Mullin answered 9 months ago

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