scholarly journals Facial nucleus

2020 ◽  
Author(s):  
Craig Hacking
Keyword(s):  
Facial Nucleus

scholarly journals Complete and Long-Term Rescue of Lesioned Adult Motoneurons by Lentiviral-Mediated Expression of Glial Cell Line-Derived Neurotrophic Factor in the Facial Nucleus

2000 ◽  
Vol 20 (15) ◽  
pp. 5587-5593 ◽  
Author(s):  
Andreas F. Hottinger ◽  
Mimoun Azzouz ◽  
Nicole Déglon ◽  
Patrick Aebischer ◽  
Anne D. Zurn
Keyword(s):  
Cell Line ◽  
Glial Cell ◽  
Neurotrophic Factor ◽  
Facial Nucleus

Whisker Movements Evoked by Stimulation of Single Motor Neurons in the Facial Nucleus of the Rat

2008 ◽  
Vol 99 (6) ◽  
pp. 2821-2832 ◽  
Author(s):  
Lucas J. Herfst ◽  
Michael Brecht
Keyword(s):  
Motor Neurons ◽  
Large Range ◽  
Facial Nucleus ◽  
Time To Peak ◽  
Coding Scheme ◽  
Movement Characteristics ◽  
Output Structure ◽  
Single Spike ◽  
Stereotyped Movement ◽  
Stimulation Of

The lateral facial nucleus is the sole output structure whose neuronal activity leads to whisker movements. To understand how single facial nucleus neurons contribute to whisker movement we combined single-cell stimulation and high-precision whisker tracking. Half of the 44 stimulated neurons gave rise to fast whisker protraction or retraction movement, whereas no stimulation-evoked movements could be detected for the remainder. Direction, speed, and amplitude of evoked movements varied across neurons. Protraction movements were more common than retraction movements ( n = 16 vs. n = 4), had larger amplitudes (1.8 vs. 0.3° for single spike events), and most protraction movements involved only a single whisker, whereas most retraction movements involved multiple whiskers. We found a large range in the amplitude of single spike-evoked whisker movements (0.06–5.6°). Onset of the movement occurred at 7.6 (SD 2.5) ms after the spike and the time to peak deflection was 18.2 (SD 4.3) ms. Each spike reliably evoked a stereotyped movement. In two of five cases peak whisker deflection resulting from consecutive spikes was larger than expected when based on linear summation of single spike-evoked movement profiles. Our data suggest the following coding scheme for whisker movements in the facial nucleus. 1) Evoked movement characteristics depend on the identity of the stimulated neuron (a labeled line code). 2) The facial nucleus neurons are heterogeneous with respect to the movement properties they encode. 3) Facial nucleus spikes are translated in a one-to-one manner into whisker movements.

Cholinergic Differentiation of Neural Progenitors in Adult Mouse Motor Facial Nucleus

2009 ◽  
pp. 090608065815094
Author(s):  
Anne Nosjean ◽  
Pascal Roux ◽  
Emmanuelle Perret ◽  
Delphine Bohl
Keyword(s):  
Adult Mouse ◽  
Neural Progenitors ◽  
Facial Nucleus

Synaptic organization of the tectal-facial pathways in the cat. I. Synaptic potentials following collicular stimulation

1988 ◽  
Vol 60 (2) ◽  
pp. 769-797 ◽  
Author(s):  
P. P. Vidal ◽  
P. J. May ◽  
R. Baker
Keyword(s):  
Superior Colliculus ◽  
Common Element ◽  
Synaptic Organization ◽  
Facial Nucleus ◽  
Synaptic Potentials ◽  
Facial Motoneurons ◽  
Brain Stem Lesions ◽  
Stem Lesions ◽  
Discrete Populations ◽  
Stimulation Of

1. The synaptic pathways underlying tectal influence over pinna movements were studied using an acute electrophysiological approach. Under pentobarbital anesthesia, postsynaptic potentials were recorded intracellularly in antidromically identified, cat facial motoneurons following electrical stimulation of the superior colliculus. How collicular topography is reflected in these synaptic potentials was examined using multiple stimulation sites. The pathways responsible for tectally evoked synaptic potentials were studied by making acute brain stem lesions and by intra-axonal horseradish peroxidase (HRP) staining. 2. Monosynaptic excitatory potentials (EPSPs) with latencies ranging from 0.7 to 1.1 ms and amplitudes that were always less than 1 mV were recorded in motoneurons following stimulation of the contralateral superior colliculus. Larger disynaptic EPSPs ranging in latency from 1.2 to 2.0 ms were recorded both in isolation and in association with monosynaptic EPSPs. In addition, disynaptic inhibitory synaptic potentials (IPSPs) with latencies ranging from 1.5 to 2.5 ms were observed, often in combination with monosynaptic EPSPs. Both disynaptic EPSPs and IPSPs were graded, augmented by multiple stimuli and found in all categories of motoneurons. 3. Stimulation of the ipsilateral superior colliculus produced nearly the same spectrum of potentials and latencies as did contralateral tectal stimulation. Occlusion between ipsi- and contralaterally evoked IPSPs suggests there might be a common element in the inhibitory disynaptic pathways. 4. More discrete populations of facial motoneurons were investigated. Specifically, motoneurons innervating the platysma and orbicularis oculi muscles, the intrinsic ear muscles, and muscles that move the vibrissae all displayed tectally elicited mono- and di-synaptic potentials. Collicular input was not restricted to motoneurons involved in orienting the pinnae. 5. The presence, polarity, and amplitude of the synaptic potentials evoked in individual facial motoneurons exhibited variations that were related to the site of stimulation in either the ipsi- or contralateral colliculus. These variations are compatible with the idea that the collicular input to facial motoneurons is topographically organized. 6. Acute lesions at the level of the superior olive indicated that the pathway producing the contralateral monosynaptic EPSPs runs, near the midline, ipsilateral to the target facial nucleus, whereas the contralateral disynaptic and the ipsilateral mono- and disynaptic pathways lie further lateral.(ABSTRACT TRUNCATED AT 400 WORDS)

Possible involvement of the facial nucleus in regulation of respiration in rats

2004 ◽  
Vol 367 (3) ◽  
pp. 283-288 ◽  
Author(s):  
Chengwu Zhang ◽  
Hengxiu Yan ◽  
Chuan Li ◽  
Yu Zheng
Keyword(s):  
Regulation Of Respiration ◽  
Facial Nucleus
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