Show coding for stimulus intensity, Biology

Assignment Help:

Q. Show Coding for stimulus intensity?

Coding for stimulus intensity: If AP's are all-or-none responses that do not vary in amplitude, how does the NS distinguish between stimuli intensity? (whisper vs. loud noise!).

The size of the receptor potential (generator potential) will affect the frequency at which the neuron fires AP's along the axon:

424_Coding for stimulus intensity.png

Note: Hence a loud noise is distinguished from a soft whisper mainly by the rate at which the nerve fires AP's. Eventually, a maximum rate is reached as nerve cell membranes are REFRACTORY (cannot respond to a stimulus immediately after the previous one).

386_Coding for stimulus intensity1.png

Also, sensory receptors usually ADAPT to sustained stimuli by decreasing their frequency at which AP's are fired:


Related Discussions:- Show coding for stimulus intensity

Explain about stacking faults, Explain about Stacking faults Stacking ...

Explain about Stacking faults Stacking faults happen in a number of crystal structures, but the common example is in close-packed structures.  Face-centered cubic (fcc) struct

For non-insulin users consumption of alcohol, Q. For non-insulin users cons...

Q. For non-insulin users consumption of Alcohol? 1. Substitute for fat calories. A drink providing 100 calories should be substituted by 2 fat exchanges. . 2. Avoid if your

Define the dietary guidelines, Define the Dietary Guidelines? Dietary G...

Define the Dietary Guidelines? Dietary Guidelines are becoming increasingly powerful tools to help the general public to appreciate the role of diet in prevention of degenerati

Abscission - effects of plant growth regulators, Abscission - Effects of Pl...

Abscission - Effects of Plant Growth Regulators Abscission of leaves and fruit is one of the more obvious characteristics of senescence. Leaves do not fall simply because they

Name the alloys which are commonly used, Name the alloys which are commonly...

Name the alloys which are commonly used The most commonly used alloys are Ti-6Al-4V and Ti-6Al-4V extra low interstitial (ELI). Commercially pure Titanium comes in different gr

Define the spatial processes, Define the Spatial processes? Environment...

Define the Spatial processes? Environmental and integrative biology cuts across a wide array of spatial scales, and theoretical approaches that take into account these widely v

Menstrual cycle- reproduction, Menstrual Cycle- Reproduction Menstrual...

Menstrual Cycle- Reproduction Menstrual cycles are characteristic of primates and do not occur in other vertebrate groups. The length of the cycle is highly variable, though 2

Cells, Where do the light reactions occur in prokaryotic and eukaryotic cel...

Where do the light reactions occur in prokaryotic and eukaryotic cells?

Technique-recurrence of angina, Technique:  Careful re-opening of ste...

Technique:  Careful re-opening of sternum and release of steinum from the underlying adhesion is done. Femoral artery and vein are exposed for going on femoro fenioral bypass

Long term potentiation, It is a neural mechanism that plays a role in encod...

It is a neural mechanism that plays a role in encoding of new information. Encoding takes place as a result of changes in the strength of synapses among neurons in neuronal network

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd