Template:Sensory Nerve Fibres: Difference between revisions

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! Sensory fibre !! Myelinated axons !! Diameter (µm) !! Conduction velocity (m/s) !! Myelin !! Sensory information !! Usefulness of electroneuromyography
! Sensory fibre !! Myelinated axons !! Diameter (µm) !! Conduction velocity (m/s) !! Sensory information !! Usefulness of electroneuromyography
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| Aα || Yes  || 13-20  || 80-120 || Yes || Proprioception  || Yes ([[Nerve Conduction Studies|H reflex]])
| Aα || Yes  || 13-20  || 80-120 || muscle spindle primary endings, golgi tendon organs, touch (and alpha motor neurons)  || Yes ([[Nerve Conduction Studies|H reflex]])
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| Aβ  || Yes  || 6-12  || 33-75 || Yes ||Discriminative sensitivity to mechanical stimuli (touch, vibration) || Yes ([[Nerve Conduction Studies|sensory nerve  conduction]])
| Aβ  || Yes  || 6-12  || 33-75 || Discriminative sensitivity to mechanical stimuli (touch, vibration) || Yes ([[Nerve Conduction Studies|sensory nerve  conduction]])
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| Aδ  || Yes || 1-5  || 3-30 || Thin || Sensitivity to cold and pain (“rapid”pain, pinprick) || No
| Aγ  || Yes  || 4-8  || 15-40 || Touch, pressure (and gamma motor neurons) ||  
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| C || No || 0.3-1.5 || 0.5-2.0 || No || Sensitivity to heat and pain ("slow" pain, burning sensations) || No
| Aδ  || Thin || 1-5  || 3-30 || "rapid" pain, crude touch, pressure, temperature || No
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| C || No || 0.3-1.5 || 0.5-2.0 || "slow" pain, touch, pressure temperature (and postganglionic autonomic) || No
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Revision as of 14:04, 19 July 2021

Characteristics of sensory nerve fibres
Sensory fibre Myelinated axons Diameter (µm) Conduction velocity (m/s) Sensory information Usefulness of electroneuromyography
Aα Yes   13-20   80-120 muscle spindle primary endings, golgi tendon organs, touch (and alpha motor neurons)   Yes (H reflex)
Aβ   Yes   6-12   33-75 Discriminative sensitivity to mechanical stimuli (touch, vibration) Yes (sensory nerve conduction)
Aγ   Yes   4-8   15-40 Touch, pressure (and gamma motor neurons)
Aδ Thin 1-5 3-30 "rapid" pain, crude touch, pressure, temperature No
C No 0.3-1.5 0.5-2.0 "slow" pain, touch, pressure temperature (and postganglionic autonomic) No
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