Search results for "Ciliospinal reflex"

showing 3 items of 3 documents

Masseter reflex and blink reflex abnormalities in Chiari II malformation.

2001

Masseter reflex and blink reflex were evaluated in 64 patients with a myelomeningocele and Chiari II malformation. In 46 patients, no brainstem signs or symptoms were present. Brainstem dysfunction related to Chiari II malformation occurred in 18 patients. The masseter reflex was more frequently abnormal in the symptomatic than asymptomatic patients (P = 0.02). Although the blink reflex was similarly affected in the two groups of patients (P > 0.1), it was very sensitive, being abnormal in 83% of symptomatic and 65% of asymptomatic patients. Concomitant abnormality of masseter reflex and the late contralateral blink reflex component (R2c) was almost exclusively found in symptomatic patients…

AdultMalemedicine.medical_specialtyMeningomyeloceleAdolescentPhysiologyAsymptomaticSensitivity and SpecificityCentral nervous system diseaseCellular and Molecular NeurosciencePhysiology (medical)medicineHumansCorneal reflexChildChi-Square DistributionBlinkingMasseter MuscleElectrodiagnosismedicine.diseaseElectric StimulationSurgeryArnold-Chiari MalformationAnesthesiaConcomitantCiliospinal reflexChild PreschoolFemaleNeurology (clinical)Brainstemmedicine.symptomAbnormalityPsychologyJaw jerk reflexMusclenerve
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Brainstem reflex circuits revisited

2004

Our current understanding of brainstem reflex physiology comes chiefly from the classic anatomical-functional correlation studies that traced the central circuits underlying brainstem reflexes and establishing reflex abnormalities as markers for specific areas of lesion. These studies nevertheless had the disadvantage of deriving from post-mortem findings in only a few patients. We developed a voxel-based model of the human brainstem designed to import and normalize MRIs, select groups of patients with or without a given dysfunction, compare their MRIs statistically, and construct three-plane maps showing the statistical probability of lesion. Using this method, we studied 180 patients with…

Adult; Aged; 80 and over; Blinking; Brain Stem Infarctions; diagnosis/physiopathology; Brain Stem; physiopathology; Electromyography; Female; Humans; Jaw; Magnetic Resonance Imaging; Male; Masseter Muscle; Middle Aged; Reflex; AbnormalAdultMalemedicine.medical_specialtyBrain Stem InfarctionsClinical neurophysiologyReflex80 and overmedicineHumansCorneal reflexAgedAged 80 and overBlinkingReflex AbnormalElectromyographyMasseter MuscleDental occlusionAnatomyMiddle AgedMagnetic Resonance Imagingdiagnosis/physiopathologyPonsJawCiliospinal reflexAbnormalReflexFemaleNeurology (clinical)BrainstemphysiopathologyPsychologyJaw jerk reflexBrain StemBrain
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Intermittent Horner's syndrome on alternate sides: a hint for locating spinal lesions.

1980

A patient with a cervical intramedullary ependymoma is described who exhibited a Horner's syndrome on alternate sides. Pharmacological study demonstrated damage to the pre-ganglionic sympathetic neurons. Disregarding cases with the Shy-Drager syndrome, three comparable case reports have been found in the literature where the fluctuating expression of Horner's syndrome, alternating from one side to the other, was attributable to a lesion of the cervical spinal cord. In contrast to the present patient, the pharmacological responses of these patients indicated a lesion of the central sympathetic pathway.

EpendymomaAdultAtropineMalemedicine.medical_specialtySympathetic nervous systemPathologyNeurologyHorner SyndromeSympathetic Nervous SystemEpinephrineAutonomic Fibers PreganglionicSpinal Cord NeoplasmHorner syndromeReflex PupillaryLesionCocaineMedicineHumansSpinal Cord Neoplasmsbusiness.industrymedicine.diseaseSpinal cordmedicine.anatomical_structureNeurologyEpendymomaCiliospinal reflexNeurology (clinical)medicine.symptombusinessJournal of neurology
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