scholarly journals The Crossed Flexor Plantar Response in Patients with Klippel-Feil Syndrome

2017 ◽  
Vol 9 (2) ◽  
pp. 143-148 ◽  
Author(s):  
Anna Sadnicka ◽  
Simon F. Farmer
Keyword(s):  
Neurological Examination ◽  
Cutaneous Stimulation ◽  
Mirror Movements ◽  
Plantar Reflex ◽  
Stimulation Of

The plantar reflex is one of most important and widely tested components of the neurological examination. We describe 3 subjects with Klippel-Feil syndrome and mirror movements where unilateral cutaneous stimulation of the foot leads to flexor plantar responses in both feet. We discuss the evidence which suggests that this “crossed flexor” plantar response reveals a transcortical pathway for the flexor plantar response.

Cutaneous Stimulation of the Bladder in Multiple Sclerosis: A Case Report

1983 ◽  
Vol 129 (5) ◽  
pp. 1047-1048 ◽  
Author(s):  
Robert C. Flanigan ◽  
Harold M. August ◽  
Byron Young ◽  
Bruce A. Lucas ◽  
J. William Mcroberts
Keyword(s):  
Multiple Sclerosis ◽  
Case Report ◽  
Cutaneous Stimulation ◽  
Stimulation Of

Red Nucleus Stimulation Inhibits Within the Inferior Olive

1998 ◽  
Vol 80 (6) ◽  
pp. 3127-3136 ◽  
Author(s):  
K. M. Horn ◽  
T. M. Hamm ◽  
A. R. Gibson
Keyword(s):  
Inferior Olive ◽  
Red Nucleus ◽  
Salient Feature ◽  
Cutaneous Stimulation ◽  
Motor Pathways ◽  
Peripheral Stimulation ◽  
Dorsal Columns ◽  
Dorsolateral Funiculus ◽  
Somatosensory Responses ◽  
Stimulation Of

Horn, K. M., T. M. Hamm, and A. R. Gibson. Red nucleus stimulation inhibits within the inferior olive. J. Neurophysiol. 80: 3127–3136, 1998. In the anesthetized cat, electrical stimulation of the magnocellular red nucleus (RNm) inhibits responses of rostral dorsal accessory olive (rDAO) neurons to cutaneous stimulation. We tested the hypothesis that RNm-mediated inhibition occurs within the inferior olive by using stimulation of the ventral funiculus (VF) of the spinal cord in place of cutaneous stimulation of the hindlimb. Fibers in the VF terminate on hindlimb rDAO neurons, so inhibition of this input would have to occur within the olive. rDAO responses elicited by VF stimulation were inhibited by prior stimulation of the RNm, indicating that inhibition occurs within the olive. In contrast, evoked potentials recorded from the VF or dorsal columns following hindlimb stimulation were not affected by prior stimulation of RNm, indicating that stimulation of the RNm does not inhibit olivary afferents at spinal levels. RNm stimulation that inhibited rDAO responses had little effect on evoked somatosensory responses in thalamus, indicating that inhibition generated by activity in RNm may be specific to rDAO. To test limb specificity of RNm-mediated inhibition, conditioning stimulation was applied to the dorsolateral funiculus at thoracic levels, which selectively activates RNm neurons projecting to the lumbar cord. Stimulation at thoracic levels inhibited evoked responses from hindlimb but not forelimb regions of rDAO, suggesting that inhibitory effects of RNm activity are limb specific. Several studies have reported that olivary neurons have reduced sensitivity to peripheral stimulation during movement; it is likely that RNm-mediated inhibition occurring within the olive contributes to this reduction of sensitivity. Inhibition of rDAO responses by descending motor pathways appears to be a salient feature of olivary function.

scholarly journals Cutaneous stimulation evokes long-lasting excitation of spinal interneurons in the turtle

1990 ◽  
Vol 64 (4) ◽  
pp. 1134-1148 ◽  
Author(s):  
S. N. Currie ◽  
P. S. Stein
Keyword(s):  
Spinal Cord ◽  
Receptive Field ◽  
Action Potential ◽  
Receptive Fields ◽  
Neural Mechanisms ◽  
Cutaneous Afferents ◽  
Cutaneous Stimulation ◽  
Single Action ◽  
Single Action Potential ◽  
Stimulation Of

1. We demonstrated multisecond increases in the excitability of the rostral-scratch reflex in the turtle by electrically stimulating the shell at sites within the rostral-scratch receptive field. To examine the cellular mechanisms for these multisecond increases in scratch excitability, we recorded from single cutaneous afferents and sensory interneurons that responded to stimulation of the shell within the rostral-scratch receptive field. A single segment of the midbody spinal cord (D4, the 4th postcervical segment) was isolated in situ by transecting the spinal cord at the segment's anterior and posterior borders. The isolated segment was left attached to its peripheral nerve that innervates part of the rostral-scratch receptive field. A microsuction electrode (4-5 microns ID) was used to record extracellularly from the descending axons of cutaneous afferents and interneurons in the spinal white matter at the posterior end of the D4 segment. 2. The turtle shell is innervated by slowly and rapidly adapting cutaneous afferents. All cutaneous afferents responded to a single electrical stimulus to the shell with a single action potential. Maintained mechanical stimulation applied to the receptive field of some slowly adapting afferents produced several seconds of afterdischarge at stimulus offset. We refer to the cutaneous afferent afterdischarge caused by mechanical stimulation of the shell as "peripheral afterdischarge." 3. Within the D4 spinal segment there were some interneurons that responded to a brief mechanical stimulus within their receptive fields on the shell with short afterdischarge and others that responded with long afterdischarge. Short-afterdischarge interneurons responded to a single electrical pulse to a site in their receptive fields either with a brief train of action potentials or with a single action potential. Long-afterdischarge interneurons responded to a single electrical shell stimulus with up to 30 s of afterdischarge. Long-afterdischarge interneurons also exhibited strong temporal summation in response to a pair of electrical shell stimuli delivered up to several seconds apart. Because all cutaneous afferents responded to an electrical shell stimulus with a single action potential, we conclude that electrically evoked afterdischarge in interneurons was produced by neural mechanisms in the spinal cord; we refer to this type of afterdischarge as "central afterdischarge." 4. These results demonstrate that neural mechanisms for long-lasting excitability changes in response to cutaneous stimulation reside in a single segment of the spinal cord. Cutaneous interneurons with long afterdischarge may serve as cellular loci for multise

scholarly journals Cutaneous stimulation of the digits and lips evokes responses with different adaptation patterns in primary somatosensory cortex

NeuroImage ◽  
2010 ◽  
Vol 52 (4) ◽  
pp. 1477-1486 ◽  
Author(s):  
Mihai Popescu ◽  
Steven Barlow ◽  
Elena-Anda Popescu ◽  
Meredith E. Estep ◽  
Lalit Venkatesan ◽  
...  
Keyword(s):  
Somatosensory Cortex ◽  
Primary Somatosensory Cortex ◽  
Cutaneous Stimulation ◽  
Stimulation Of

scholarly journals P.005 Painful epileptic seizures involving the insula

2017 ◽  
Vol 44 (S2) ◽  
pp. S15-S15
Author(s):  
G Young ◽  
WT Blume
Keyword(s):  
Neurological Examination ◽  
Epileptic Seizures ◽  
Lower Limbs ◽  
Case Description ◽  
Intense Pain ◽  
Pain Matrix ◽  
Somatosensory Cortices ◽  
Posterior Insula ◽  
The Right ◽  
Stimulation Of

Background: We have previously described painful epileptic seizures involving the primary and second somatosensory cortices. A recently encountered 24 year old man described left hemicorporial, painful seizures in association with a tumor involving the right insula. Methods: Case description with imaging and EEG. Results: The patient described frequent, sharp pains simultaneously involving the left face, upper and lower limbs and trunk that lasted from several seconds to a minute and were 10/10 in intensity. These markedly lessened in frequency but the severity of the pain persisted with a maintenance dose of 600 mg/day of carbamazepine. Neurological examination, including cortical sensation, was normal. MRI revealed a 3 cm rounded lesion deep to but immediately against the entire right insula but not extending cortically beyond the confines of the insula. EEGs have been unremarkable. The lesion has been stable for over 1 year. Conclusions: Insular seizures can produce brief, sharp, intense pain that involves the whole of the contralateral body simultaneously. This is in keeping with the insula as part of the pain matrix with connections with the thalamus. Stimulation of the posterior insula can produce hemicorporial pain without a march similar to that experienced by our patient.

scholarly journals Cutaneous stimulation of slow stroke back massage to reduce the pain of sectio caesarea

MEDISAINS ◽  
2019 ◽  
Vol 17 (1) ◽  
pp. 12
Author(s):  
Ema Wahyu Ningrum ◽  
Dwi Novitasari ◽  
Murniati Murniati
Keyword(s):  
Pain Intensity ◽  
Sampling Technique ◽  
Sectio Caesarea ◽  
P Value ◽  
Average Intensity ◽  
Cutaneous Stimulation ◽  
Before And After ◽  
Average Pain ◽  
Stimulation Of ◽  
Back Massage

Background: Labor with sectio caesarea may result to an impact after surgery, namely pain. The pain reduction technique that can be done is cutaneous stimulation of Slow Stroke Back Massage.Objective: This study aims to determine cutaneous stimulation  of Slow Stroke Back Massage towards pain in post sectio caesarean patientsMethods: This study used Pre Experimental Design with the One-Group Pretest-Posttest Design approach. The samples studied were 20 patients of post SC surgery by consecutive sampling technique. The instrument used a VAS scale observation sheet. The research data were analyzed through Wilcoxon test.Results: The results showed that the average pain intensity before the intervention was 6.10, the average intensity of pain after the intervention implemented reached 3.90, there was a difference of pain intensity in post sectio caesarean patients before and after cutaneous stimulation technique of Slow Stroke Back Massage (p-value = 0.001)Conclusion: there is an effect of cutaneous stimulation of Slow Stroke Back Massage on pain in post sectio caesarean patients.

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