Class | Type | Modality | Fibers | Tracts |
Nociceptors | Pain/Temperature | Pain (mechanical, thermal, chemical) | A-delta (fast) myelinated, C-fiber (slow) unmyelinated | Anterolateral system |
Mechanoreceptors | Free nerve endings | Touch, pressure | A-delta, C-fibers | Anterolateral system |
ㅤ | Merkel’s tactile discs | Discriminative touch, superficial pressure | A-beta myelinated | Dorsal column-medial lemniscus |
ㅤ | Meissner’s corpuscles | Two-point discriminative fine touch | A-beta myelinated | Dorsal column-medial lemniscus |
ㅤ | Pacinian corpuscles | Deep pressure and vibration | A-beta myelinated | Dorsal column-medial lemniscus |
ㅤ | Ruffini’s corpuscles | Skin pressure/stretch | A-beta myelinated | Dorsal column-medial lemniscus |
ㅤ | Peritrichial nerve endings | Hair movement | A-beta myelinated | Dorsal column-medial lemniscus |
Muscle and tendon mechanoreceptors | Nuclear bag fibers | Onset of muscle stretch | A-alpha myelinated fibers, muscle spindle afferents, secondary afferents | Dorsal column-medial lemniscus and spinocerebellar |
ㅤ | Nuclear chain fibers | Progress of muscle stretch | ㅤ | ㅤ |
ㅤ | Golgi tendon organ | Tendon stretch | A-alpha myelinated fibers | ㅤ |
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