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Ascending somato-sensory pathways
Home > 1.4 Effects of lesions to somatosensory and motor pathways > 1.4.1 Effects of lesions to ascending somatosensory pathways
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Dorsal column tract lesions


dorsal column tract lesions


EFFECTS OF A UNILATERAL LESION:

 

 

  • Loss of discriminative touch, vibration sense and conscious proprioception.
  • If the lesion is below the decussation of the medial lemniscus, the loss is on the same side as the lesion.
  • If the lesion is above this decussation, the loss is on the contralateral side.
  • The loss of sensation is at levels below the lesion.

Dorsal column tract lesions


KEY CONCEPTS/EFFECTS OF A UNILATERAL LESION

 

 

  • Loss of discriminative touch, vibration sense and conscious proprioception.
  • If the lesion is below the decussation of the medial lemniscus, the loss is on the same side as the lesion.
  • If the lesion is above this decussation, the loss is on the contralateral side.
  • The loss of sensation is at levels below the lesion.


© King's College London 2011 | Content & original graphics by Professor Lawrence Bannister | Interface design & development by EHM, CTEL | Content development by Julia Warner, VC TEL