scholarly journals Blink Reflex Alterations in Various Polyneuropathies

10.5772/26275 ◽  
2012 ◽  
Author(s):  
Figen Guney
Keyword(s):  
Blink Reflex

The effect of age on blink reflex excitability recovery

2011 ◽  
Vol 42 (01) ◽  
Author(s):  
M. Kofler ◽  
H. Kumru ◽  
J. Schaller
Keyword(s):  
Blink Reflex ◽  
Reflex Excitability ◽  
Effect Of Age

Utilidad del blink reflex en un caso de neurobehçet de tronco

2001 ◽  
Vol 32 (01) ◽  
pp. 67
Author(s):  
Mónica Ortega Galán ◽  
A.G. García ◽  
Victor Martínez ◽  
Jesús Calleja Fernández
Keyword(s):  
Blink Reflex

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.

Differential sensitivity of trigeminal blink reflex responses to hypoxia and hypercapnia in the cat

1990 ◽  
Vol 11 ◽  
pp. S125
Author(s):  
Masumi Inagaki ◽  
Kenzo Takeshita ◽  
Yoshimitsu Shiraishi ◽  
Shozo Nakao ◽  
Toshihiko Oikawa
Keyword(s):  
Blink Reflex ◽  
Differential Sensitivity ◽  
Reflex Responses
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