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Jendrassik maneuver effect on spinal and brainstem reflexes
Jendrassik maneuver effect on spinal and brainstem reflexes
- Source :
- Experimental Brain Research. 237:3265-3271
- Publication Year :
- 2019
- Publisher :
- Springer Science and Business Media LLC, 2019.
-
Abstract
- The effect of Jendrassik Maneuver (JM) has been extensively studied on monosynaptic reflexes in numerous muscles below the level at which the maneuver was performed. Here we hypothesize that the effect of JM could be observed also on other reflexes, indicating a widespread influence of performing a motor act such as the JM. We examined polysynaptic reflexes caudal (i.e., the withdrawal reflex of the lower extremities) and rostral (i.e., the blink reflex to supraorbital nerve stimulation) to the level of JM contraction. We have assessed soleus tendon (T) reflex; withdrawal reflex in tibialis anterior and soleus muscle; blink reflex (BR), blink reflex excitability recovery curve (BR-ER) and prepulse inhibition of the blink reflex. Our results showed that (1) T-reflex amplitude increased during JM and decreased just after and 15 min after JM; (2) no change in the withdrawal reflex; (3) R2 area of BR reduced significantly just after or 15 min after JM; (4) Prepulse inhibition in BR reduced significantly during JM; (5) no change in BR-ER. Our results indicate that JM leads to generalized effects on neural excitability at both caudal and rostral levels. Furthermore, JM has a selective effect on excitability of reflex circuitries.
- Subjects :
- Adult
Male
Reflex, Stretch
Withdrawal reflex
Tendon reflex
050105 experimental psychology
Young Adult
03 medical and health sciences
0302 clinical medicine
Reflex
medicine
Humans
0501 psychology and cognitive sciences
Corneal reflex
Muscle, Skeletal
Prepulse inhibition
Aged
Soleus muscle
Blinking
Prepulse Inhibition
business.industry
General Neuroscience
05 social sciences
Anatomy
Middle Aged
Supraorbital nerve
Electric Stimulation
medicine.anatomical_structure
Female
Brainstem
business
030217 neurology & neurosurgery
Subjects
Details
- ISSN :
- 14321106 and 00144819
- Volume :
- 237
- Database :
- OpenAIRE
- Journal :
- Experimental Brain Research
- Accession number :
- edsair.doi.dedup.....f3203af27c416b5fb9ccc08e6b2196f2
- Full Text :
- https://doi.org/10.1007/s00221-019-05668-y