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189
what are fibre type A delta fibres?
responsible for fast or first pain
sense pain and temperature
activated by noxious mechanical and heat stimuli
Transmit sharp pain following injury
can be subdivided
- low threshold hence respond quickly in normal circumstances but rapidly adapt and the firing rate falls despite continued stimulation
-high threshold respond to intense stimuli only but slow adapting and continue firing with continued stimulation
sense pain and temperature
activated by noxious mechanical and heat stimuli
Transmit sharp pain following injury
can be subdivided
- low threshold hence respond quickly in normal circumstances but rapidly adapt and the firing rate falls despite continued stimulation
-high threshold respond to intense stimuli only but slow adapting and continue firing with continued stimulation