Classes : Mechanical ( Respond to intense mechanical stimuli) Thermal ( Respond to intense heat) Polymodal ( Respond to a variety of stimuli including inttense mechanical stimuli, heat, cold, and chemical.
What are the pathways to Somatosensory cortex?
Dorsal colum (medial lemniscal pathway)
What type of sensations travel through the Dorsal column-medial lemniscal pathway?
Touch, pressure, and proprioception
What type of sensations travel through the spinothalamic tract?
Pain and temperature
Activation of nocioceptors leads to what type of response?
Perception of pain, elicits autonomic responses, emotional responses, and reflective withdrawal from stimulus.
Describe fast pain perception.
Travel through A delta fibers
Elicit a sharp pricking sensation
Are well localized
Describe slow pain perception.
Travel through C fibers
Elicit a dull aching
Are poorly localized
What neurotransmitter is released from A delta and C fiber pathways?