The most important fibers in the transmission of nociceptive stimulus are the Aδ and C
fibers. The first ones will rapidly transmit a brief and acute pinprick-like sensation,
perceived to be precisely located at the point of stimulation. Following this activity, C fibers
will transmit their information with a relatively long delay (100 millisenconds to a second,
depending on the stimulus location). This second sensory input results in a more diffuse
deep pain sensation.