Spinothalamic Tract - Sub-systems

Sub-systems

There are two sub-systems identified:

  • Direct (for direct conscious appreciation of pain)
  • Indirect (for affective and arousal impact of pain). Indirect projections include
    • Spino-Reticulo-Thalamo-Cortical (part of the ascending reticular arousal system, aka ARAS)
    • Spino-Mesencephalic-Limbic (for affective impact of pain).

Read more about this topic:  Spinothalamic Tract