spinothalamic การใช้

• Would these two stimuli send identical signals through the spinothalamic tract?
• The spinothalamic tract is a sensory pathway originating in the spinal cord.
• The spinothalamic tract consists of two adjacent pathways : anterior and lateral.
• The spinothalamic tract is normally divided at the level C1-C2.
• Neuropathic pain is often the result of a lesion in spinothalamic pathways.
• The lateral funiculus transmits the contralateral corticospinal and spinothalamic tracts.
• The anterior spinothalamic tract carries information about crude touch.
• Specifically, crude touch and pressure sensation conveyed through the anterior spinothalamic tract.
• The lateral spinothalamic tract conveys pain and temperature.
• Similarly, afferent fibres from the spinothalamic tract synapse at the periaqueductal grey matter.
• Cross-section of the spinal cord showing the dorsal column and the anterolateral spinothalamic tracts
• The fibers of the anterior spinothalamic tract conduct information about pressure and crude touch ( prothopatic ).
• These messages are then relayed to the brain along an ascending pathway, for example the spinothalamic tract.
• Neurons of the cingulum receive afferent fibers from the parts of the thalamus that are associated with the spinothalamic tract.
• The spinothalamic tract is damaged, resulting in loss of pain and temperature sensation on the opposite side of the body.
• The location of the spinothalamic tract is important clinically due of the characteristic sensory deficits that follow certain spinal cord injuries.
• After synapsing, secondary axons decussate and ascend in the anterior lateral portion of the spinal cord as the spinothalamic tract.
• By specifically targeting pain and temperature pathways and measuring cortical responses, clinicians can identify even minute lesions in the spinothalamic pathways.
• In turn the nucleus raphe magnus projects to the substantia gelatinosa region of the dorsal horn and mediates the sensation of spinothalamic inputs.
• Pain-temperature information from the body is carried to the thalamus by the spinothalamic tract, and from the face by the anterior trigeminothalamic tract.