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===Laser evoked potentials===
 
===Laser evoked potentials===
   
Neuropathic pain is often the result of a lesion in [[spinothalamic pathways]]. Laser evoked potentials (LEPs) are measurements of cortical responses using lasers to selectively stimulate thermonociceptors in the skin. Lasers can emit a radiant-heat pulse stimulus to selectively activate A-delta and C free nerve endings. By specifically targeting pain and temperature pathways and measuring cortical responses, clinicians can identify even minute lesions in the spinothalamic pathways. LEP abnormalities are strongly indicative of neuropathic pain, while a normal LEP is often more ambiguous. LEPs have high sensitivity and are very reliable in assessing damage to both central and peripheral nervous systems<ref>Garcia-Larrea L. 2008. Laser-evoked potentials in the diagnosis of central neuropathic pain. Douleur Et Analgesie 21:93-8</ref>.
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Neuropathic pain is often the result of a lesion in [[spinothalamic]] pathways. Laser evoked potentials (LEPs) are measurements of cortical responses using lasers to selectively stimulate thermonociceptors in the skin. Lasers can emit a radiant-heat pulse stimulus to selectively activate A-delta and C free nerve endings. By specifically targeting pain and temperature pathways and measuring cortical responses, clinicians can identify even minute lesions in the spinothalamic pathways. LEP abnormalities are strongly indicative of neuropathic pain, while a normal LEP is often more ambiguous. LEPs have high sensitivity and are very reliable in assessing damage to both central and peripheral nervous systems<ref>Garcia-Larrea L. 2008. Laser-evoked potentials in the diagnosis of central neuropathic pain. Douleur Et Analgesie 21:93-8</ref>.
   
 
===Quantitative sensory testing===
 
===Quantitative sensory testing===

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