Cut‐off scores of blink reflex recovery cycle to differentiate atypical parkinsonisms

2020 ◽  
Vol 27 (11) ◽  
Author(s):  
G. Sciacca ◽  
G. Mostile ◽  
A. Nicoletti ◽  
S. Salomone ◽  
F. Drago ◽  
...  
Keyword(s):  
Blink Reflex ◽  
Recovery Cycle ◽  
Atypical Parkinsonisms

scholarly journals Effects of Transcranial Ultrasound Stimulation on Trigeminal Blink Reflex Excitability

2021 ◽  
Vol 11 (5) ◽  
pp. 645
Author(s):  
Andrea Guerra ◽  
Edoardo Vicenzini ◽  
Ettore Cioffi ◽  
Donato Colella ◽  
Antonio Cannavacciuolo ◽  
...  
Keyword(s):  
Substantia Nigra ◽  
Superior Colliculus ◽  
Blink Reflex ◽  
Transcranial Ultrasound ◽  
Recovery Cycle ◽  
Brain Areas ◽  
Nucleus Raphe Magnus ◽  
Ultrasound Stimulation ◽  
Raphe Magnus ◽  
Interstimulus Intervals

Recent evidence indicates that transcranial ultrasound stimulation (TUS) modulates sensorimotor cortex excitability. However, no study has assessed possible TUS effects on the excitability of deeper brain areas, such as the brainstem. In this study, we investigated whether TUS delivered on the substantia nigra, superior colliculus, and nucleus raphe magnus modulates the excitability of trigeminal blink reflex, a reliable neurophysiological technique to assess brainstem functions in humans. The recovery cycle of the trigeminal blink reflex (interstimulus intervals of 250 and 500 ms) was tested before (T0), and 3 (T1) and 30 min (T2) after TUS. The effects of substantia nigra-TUS, superior colliculus-TUS, nucleus raphe magnus-TUS and sham-TUS were assessed in separate and randomized sessions. In the superior colliculus-TUS session, the conditioned R2 area increased at T1 compared with T0, while T2 and T0 values did not differ. Results were independent of the interstimulus intervals tested and were not related to trigeminal blink reflex baseline (T0) excitability. Conversely, the conditioned R2 area was comparable at T0, T1, and T2 in the nucleus raphe magnus-TUS and substantia nigra-TUS sessions. Our findings demonstrate that the excitability of brainstem circuits, as evaluated by testing the recovery cycle of the trigeminal blink reflex, can be increased by TUS. This result may reflect the modulation of inhibitory interneurons within the superior colliculus.

P23-11 The clinical utility of the blink reflex recovery cycle to distinguish between blepharospasm and atypical (presumed psychogenic) blepharospasm

2010 ◽  
Vol 121 ◽  
pp. S241
Author(s):  
J.T.H. Teo ◽  
P. Schwingenschuh ◽  
P. Katschnig ◽  
M. Edwards ◽  
K. Bhatia ◽  
...  
Keyword(s):  
Clinical Utility ◽  
Blink Reflex ◽  
Recovery Cycle

Blink reflex recovery cycle distinguishes patients with idiopathic normal pressure hydrocephalus from elderly subjects

2021 ◽  
Vol 429 ◽  
pp. 118511
Author(s):  
Alessandro Mechelli ◽  
Andrea Quattrone ◽  
Rita Nisticò ◽  
Marianna Crasà ◽  
Domenico La Torre ◽  
...  
Keyword(s):  
Normal Pressure Hydrocephalus ◽  
Normal Pressure ◽  
Blink Reflex ◽  
Idiopathic Normal Pressure Hydrocephalus ◽  
Elderly Subjects ◽  
Recovery Cycle

scholarly journals Temporal discrimination threshold and blink reflex recovery cycle in cervical dystonia – two sides of the same coin?

2019 ◽  
Vol 68 ◽  
pp. 4-7 ◽  
Author(s):  
Johanna Junker ◽  
Theresa Paulus ◽  
Valerie Brandt ◽  
Anne Weissbach ◽  
Sinem Tunc ◽  
...  
Keyword(s):  
Cervical Dystonia ◽  
Temporal Discrimination ◽  
Blink Reflex ◽  
Discrimination Threshold ◽  
Recovery Cycle ◽  
Two Sides

P 80 Blink reflex recovery cycle in patients with genetically determined ataxias

2017 ◽  
Vol 128 (10) ◽  
pp. e367-e368
Author(s):  
S. Tunc ◽  
A. Weissbach ◽  
E. Werner ◽  
N. Baginski ◽  
J. Lubs ◽  
...  
Keyword(s):  
Blink Reflex ◽  
Recovery Cycle ◽  
Genetically Determined

The blink reflex recovery cycle in Parkinson's disease: changes during acute apomorphine administration

1995 ◽  
Vol 95 (3) ◽  
pp. P61
Author(s):  
O. Scarpino ◽  
G. Pelliccioni ◽  
M. Guidi ◽  
T. Rossi ◽  
M. Del Gobbo ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Blink Reflex ◽  
Recovery Cycle

Voluntary eyelid contraction modifies the blink reflex recovery cycle

1998 ◽  
Vol 98 (1) ◽  
pp. 29-35 ◽  
Author(s):  
M. Sommer ◽  
G. Wöbker ◽  
A. Ferbert
Keyword(s):  
Blink Reflex ◽  
Recovery Cycle

The stimulus intensity modifies the blink reflex recovery cycle in healthy subjects and in blepharospasm

2001 ◽  
Vol 112 (12) ◽  
pp. 2293-2299 ◽  
Author(s):  
M. Sommer ◽  
A. Ferbert
Keyword(s):  
Stimulus Intensity ◽  
Healthy Subjects ◽  
Blink Reflex ◽  
Recovery Cycle
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