accomodation of nerve fibers to constant stimuli

[SamarEsawy]

I don't understand this mechanism at all!
what makes the sodium channels closed during the constant stimulus?how can sod influx cause inactivation of the channel?
why does the threshold increases during constant stimulation??

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[thinkbig]

May be its part of the receptor characteristic to be not responsive to 2nd stimuli for a while


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[SamarEsawy]

I don't think so , because if so why does a nerve respond to a stimulus of increasing intensity?
I don't know what makes threshold increses when a constant stimulus is applied

 

[scoKraz4]

Neural adaption isn't fully understood I believe. They think it is mediated in the cortex though.