PMID- 30397817 OWN - NLM STAT- MEDLINE DCOM- 20190311 LR - 20200225 IS - 1590-3478 (Electronic) IS - 1590-1874 (Linking) VI - 40 IP - 2 DP - 2019 Feb TI - Prepulse modulation and recovery of trigemino-cervical reflex in normal subjects. PG - 305-310 LID - 10.1007/s10072-018-3624-7 [doi] AB - OBJECTIVE: In this study, we analyzed the inhibitory control on the trigemino-cervical reflex (TCR), and whether or not prepulse modulation (PPM) has an effect on TCR. Thus, we studied the PPM of TCR. We hypothesized that TCR would presumably be under the modulatory effect after the prepulse stimulus similar to blink reflex (BR). We also studied the recovery of TCR which was previously shown. METHODS: We included 13 healthy individuals. All subjects underwent recordings of TCR, TCR-PPM, and recovery of TCR. For TCR-PPM, a subthreshold stimulus to second finger 50 or 100 ms before the test stimulus was applied. For recovery of TCR, two stimuli at the infraorbital nerve were applied at 300, 500, and 800 ms interstimulus intervals (ISIs). RESULTS: There was an inhibition of bilateral late responses of TCR at the ISIs of both 50 ms and 100 ms. There was no change of latencies. Full recovery of TCR did not develop even at the ISI 800 ms. DISCUSSION: We have provided an evidence for the TCR-PPM in healthy subjects for the first time in this study. The prepulse inhibition is attributed to the functions of the pedunculopontine tegmental nucleus. Our study provides a strong indication that there are connections between pedunculopontine tegmental nucleus and trigemino-cervical circuit, which produces TCR. FAU - E Kiziltan, Meral AU - E Kiziltan M AD - Department of Neurology, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey. FAU - Bekdik Sirinocak, Pinar AU - Bekdik Sirinocak P AD - Department of Neurology, Kocaeli Derince Education and Research Hospital, Istanbul, Turkey. FAU - Akinci, Tuba AU - Akinci T AD - Department of Neurology, Beylikduzu State Hospital, Istanbul, Turkey. FAU - Cerrahoglu Sirin, Tuba AU - Cerrahoglu Sirin T AD - Department of Neurology, Sisli Hamidiye Etfal Education and Research Hospital, Istanbul, Turkey. FAU - Arkali, Burcu Nuran AU - Arkali BN AD - Department of Neurology, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey. FAU - Candan, Fatma AU - Candan F AD - Department of Neurology, Goztepe Education and Research Hospital, Istanbul Medeniyet University, Istanbul, Turkey. FAU - Gunduz, Aysegul AU - Gunduz A AD - Department of Neurology, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey. draysegulgunduz@yahoo.com. LA - eng PT - Journal Article DEP - 20181105 PL - Italy TA - Neurol Sci JT - Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology JID - 100959175 SB - IM MH - Adult MH - Electric Stimulation MH - Face/physiology MH - Female MH - Fingers/physiology MH - *Head Movements/physiology MH - Humans MH - Male MH - Middle Aged MH - Pedunculopontine Tegmental Nucleus/physiology MH - *Prepulse Inhibition/physiology MH - *Reflex/physiology MH - Time Factors OTO - NOTNLM OT - Pedunculopontine tegmental nucleus OT - Prepulse inhibition (PPI) OT - Prepulse modulation (PPM) OT - Recovery OT - Trigemino-cervical reflex (TCR) EDAT- 2018/11/07 06:00 MHDA- 2019/03/12 06:00 CRDT- 2018/11/07 06:00 PHST- 2018/07/07 00:00 [received] PHST- 2018/10/25 00:00 [accepted] PHST- 2018/11/07 06:00 [pubmed] PHST- 2019/03/12 06:00 [medline] PHST- 2018/11/07 06:00 [entrez] AID - 10.1007/s10072-018-3624-7 [pii] AID - 10.1007/s10072-018-3624-7 [doi] PST - ppublish SO - Neurol Sci. 2019 Feb;40(2):305-310. doi: 10.1007/s10072-018-3624-7. Epub 2018 Nov 5.