PMID- 28093778 OWN - NLM STAT- MEDLINE DCOM- 20171019 LR - 20171019 IS - 1097-4598 (Electronic) IS - 0148-639X (Linking) VI - 56 IP - 5 DP - 2017 Nov TI - Brainstem reflex excitability changes in patients with amyotrophic lateral sclerosis. PG - 925-929 LID - 10.1002/mus.25580 [doi] AB - INTRODUCTION: In this study we explored brainstem reflex excitability changes, blink reflex recovery cycles (BRRCs), and masseter inhibitory reflexes (MIRs) in patients with amyotrophic lateral sclerosis (ALS). METHODS: Fourteen ALS patients and 14 healthy control subjects were recruited. The BRRC was examined at interstimulus intervals (ISIs) of 100, 200, 300, 400, 500, and 600 ms. The latencies and durations of silent period 1 (SP1) and silent period 2 (SP2) of the MIR were measured. RESULTS: Decreased R2 area suppression was prominent in the ALS group at ISIs of 200, 300, and 400 ms (P < 0.02), whereas no significant differences between groups at 100, 500, and 600 ms ISIs (P > 0.05) were observed. SP2 duration was significantly prolonged in the ALS group compared with controls (P = 0.01). CONCLUSIONS: Brainstem inhibitory and excitatory interneuronal activity is altered in ALS, possibly brought about by physiological and morphological changes at the cortical or bulbar levels. Muscle Nerve 56: 925-929, 2017. CI - (c) 2017 Wiley Periodicals, Inc. FAU - Cengiz, Bulent AU - Cengiz B AD - Department of Neurology, Division of Clinical Neurophysiology, Gazi University Faculty of Medicine, Besevler, 06500, Ankara, Turkey. FAU - Ercan, Merve Bahar AU - Ercan MB AD - Department of Neurology, Division of Clinical Neurophysiology, Gazi University Faculty of Medicine, Besevler, 06500, Ankara, Turkey. FAU - Iskender, Mustafa AU - Iskender M AD - Department of Neurology, Division of Clinical Neurophysiology, Gazi University Faculty of Medicine, Besevler, 06500, Ankara, Turkey. FAU - Kuruoglu, Hidayet Reha AU - Kuruoglu HR AD - Department of Neurology, Division of Clinical Neurophysiology, Gazi University Faculty of Medicine, Besevler, 06500, Ankara, Turkey. LA - eng PT - Journal Article DEP - 20170318 PL - United States TA - Muscle Nerve JT - Muscle & nerve JID - 7803146 SB - IM MH - Aged MH - Amyotrophic Lateral Sclerosis/*pathology MH - Blinking/*physiology MH - Brain Stem/*physiopathology MH - Case-Control Studies MH - Electromyography MH - Female MH - Functional Laterality MH - Humans MH - Male MH - Masseter Muscle/*physiopathology MH - Middle Aged MH - Reaction Time/physiology MH - Statistics as Topic MH - Time Factors OTO - NOTNLM OT - ALS OT - blink reflex recovery cycle OT - brainstem reflex OT - excitability OT - masseter inhibitory reflex EDAT- 2017/01/18 06:00 MHDA- 2017/10/20 06:00 CRDT- 2017/01/18 06:00 PHST- 2016/07/26 00:00 [received] PHST- 2017/01/09 00:00 [revised] PHST- 2017/01/11 00:00 [accepted] PHST- 2017/01/18 06:00 [pubmed] PHST- 2017/10/20 06:00 [medline] PHST- 2017/01/18 06:00 [entrez] AID - 10.1002/mus.25580 [doi] PST - ppublish SO - Muscle Nerve. 2017 Nov;56(5):925-929. doi: 10.1002/mus.25580. Epub 2017 Mar 18.