Second pain event related potentials to argon laser stimuli: recording and quantification.
A non-invasive technique for quantification of argon laser induced burning second pain (C-fibre) is suggested. Using frequency analysis event related responses to burning pain can be detected in the EEG interval 1-2 seconds after laser stimulation. When the laser stimulus induced a burning pain perception, the power from 0.5-2.5 Hz of the EEG interval 1-2 seconds after stimulation differed significantly from the power calculated from the same time interval when no burning pain was perceived.
Arendt-Nielsen
L
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Department of Medical Informatics, Aalborg University, Denmark.
D000328:Adult; D000344:Afferent Pathways / Q000503:physiopathology; D001143:Arousal / Q000502:physiology; D002540:Cerebral Cortex / Q000503:physiopathology; D004569:Electroencephalography / Q000295:instrumentation*; D005073:Evoked Potentials, Somatosensory / Q000502:physiology; D005260:Female; D005583:Fourier Analysis; D006801:Humans; D007834:Lasers; D008297:Male; D009412:Nerve Fibers / Q000502:physiology*; D009619:Nociceptors / Q000503:physiopathology*; D010146:Pain / Q000503:physiopathology*; D010147:Pain Measurement; D011930:Reaction Time / Q000502:physiology; D012684:Sensory Thresholds / Q000502:physiology; D012815:Signal Processing, Computer-Assisted; D012867:Skin / Q000294:innervation; D012881:Skin Temperature / Q000502:physiology*; D013697:Thermosensing / Q000502:physiology*