Orbicularis oculi responses to stimulation of nerve afferents from upper and lower limbs in normal humans
A brief mechanical or electrical stimulus to peripheral nerve afferents from the upper and lower limbs elicited a small and inconsistent EMG response of the orbicularis oculi muscles. This response was facilitated when the stimuli were delivered at fixed leading time intervals, of 45–300 ms, with re...
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Veröffentlicht in: | Brain research 1994-07, Vol.650 (2), p.313-316 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A brief mechanical or electrical stimulus to peripheral nerve afferents from the upper and lower limbs elicited a small and inconsistent EMG response of the orbicularis oculi muscles. This response was facilitated when the stimuli were delivered at fixed leading time intervals, of 45–300 ms, with respect to a supraorbital nerve electrical stimulus. Also, the peripheral nerve stimulus modified the conventional blink reflex responses, inducing facilitation of R1 and inhibition of R2. These results suggest a complex processing of sensory inputs from the face and the limbs at the brainstem, where they are probably integrated in a network of interneurons influencing the excitability of facial motoneurons. |
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ISSN: | 0006-8993 1872-6240 |
DOI: | 10.1016/0006-8993(94)91797-3 |