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Difference between revisions of "Trigeminal Nervous System Segmentation"
Trigeminal Nervous System Segmentation (view source)
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, 2 years ago→Laser Evoked Potentials and Masseteric Laser Silent Period
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[[File:Laser_Evoked_Potentials_-_Blink_reflex_-_Masseter_Silent_Period.jpg|left|thumb|'''<translate>Figure</translate> 10:''' <translate>Laser stimulation that evoke a Blink reflex (BR), a Masseter Inhibitor Reflex (MIR) and Evoked Potentials Laser</translate> (LEPs)]] | [[File:Laser_Evoked_Potentials_-_Blink_reflex_-_Masseter_Silent_Period.jpg|left|thumb|'''<translate>Figure</translate> 10:''' <translate>Laser stimulation that evoke a Blink reflex (BR), a Masseter Inhibitor Reflex (MIR) and Evoked Potentials Laser</translate> (LEPs)]] | ||
<translate>The perception threshold has been determined by the limits method in two sets of intensity by increasing or decreasing the trigger stimulation</translate>. <translate>The intensity of the laser beam is fixed at 1.5 the perceptual threshold</translate>. <translate>With regard to LEP (LEP: Laser Evoked Potentials), signals are recorded through the top-disk electrodes (Cz) with two references for each side on the ear lobes</translate> (A1, A2). <translate>Two blocks of eight to 12 tests each are mediated off-line. Signs are amplified, filtered (0.5–50 Hz), and stored by means of an analyser for biopotential</translate> (Premiere, Medelec, UK). <translate>For each block, we have measured the latency of the N and P components and the peak-to-peak width of the potential evoked</translate>.<ref>Romaniello | <translate>The perception threshold has been determined by the limits method in two sets of intensity by increasing or decreasing the trigger stimulation</translate>. <translate>The intensity of the laser beam is fixed at 1.5 the perceptual threshold</translate>. <translate>With regard to LEP (LEP: Laser Evoked Potentials), signals are recorded through the top-disk electrodes (Cz) with two references for each side on the ear lobes</translate> (A1, A2). <translate>Two blocks of eight to 12 tests each are mediated off-line. Signs are amplified, filtered (0.5–50 Hz), and stored by means of an analyser for biopotential</translate> (Premiere, Medelec, UK). <translate>For each block, we have measured the latency of the N and P components and the peak-to-peak width of the potential evoked</translate>.<ref>{{cita libro | ||
| autore = Romaniello A | |||
| autore2 = Cruccu G | |||
| autore3 = Frisardi G | |||
| autore4 = Arendt-Nielsen L | |||
| autore5 = Svensson P | |||
| titolo = Assessment of nociceptive trigeminal pathways by laser-evoked potentials and laser silent periods in patients with painful temporomandibular disorders | |||
| url = https://pubmed.ncbi.nlm.nih.gov/12749956/ | |||
| volume = | |||
| opera = Pain | |||
| anno = 2003 | |||
| editore = | |||
| città = | |||
| ISBN = | |||
| DOI = 10.1016/s0304-3959(02)00347-0 | |||
| oaf = <!-- qualsiasi valore --> | |||
| LCCN = | |||
| OCLC = | |||
| PMID = 12749956 | |||
}}</ref> | |||
<translate>For LSPs, the same parameters were used as described above, but the recording is performed on masseter muscles</translate>. <translate>The area was subtracted from the 100-ms curve prior to adjusted and mediated laser stimulus (pre-analysis)</translate>. <translate>The duration of the registered EMG activity is 400 ms, of which 100 ms corresponds to pre-stimulus and 300 ms in the post-stimulus period</translate>. <translate>The EMG signals are amplified, filtered (20 Hz–1 kHz), and sampled at 4 kHz</translate>. <translate>Subjects are asked to tighten their teeth with the maximum muscular strength to determine the EMG activity corresponding to the Maximum Volunteer Contraction</translate> (MVC: <translate>Maximum Voluntary Contraction</translate>) <translate>of masseter muscles and at different levels (15–25%), (35–45%), (55-65%), and (75–85%) of MVC</translate>. <translate>Subjects receive visual feedback with markers on the computer screen, which clearly indicates when the default level is reached</translate>. | <translate>For LSPs, the same parameters were used as described above, but the recording is performed on masseter muscles</translate>. <translate>The area was subtracted from the 100-ms curve prior to adjusted and mediated laser stimulus (pre-analysis)</translate>. <translate>The duration of the registered EMG activity is 400 ms, of which 100 ms corresponds to pre-stimulus and 300 ms in the post-stimulus period</translate>. <translate>The EMG signals are amplified, filtered (20 Hz–1 kHz), and sampled at 4 kHz</translate>. <translate>Subjects are asked to tighten their teeth with the maximum muscular strength to determine the EMG activity corresponding to the Maximum Volunteer Contraction</translate> (MVC: <translate>Maximum Voluntary Contraction</translate>) <translate>of masseter muscles and at different levels (15–25%), (35–45%), (55-65%), and (75–85%) of MVC</translate>. <translate>Subjects receive visual feedback with markers on the computer screen, which clearly indicates when the default level is reached</translate>. | ||