David Z. Jacome

• EdD
• Instructor at Monroe Community College

Esta publicación es un aporte para que los países de Latinoamérica avancen, individualmente y como región, en la definición de los retos y las estrategias de política que −desde la perspectiva del desarrollo científico y tecnológico, la innovación y la transferencia de tecnología− les permita hacer de los sistemas nacionales de innovación (SIN) una...

Chronic renal failure is a disease considered as a catastrophic disease; moreover, it is among the fi rst 50 leading causes of death in Latin America. This disease presents several manifestations at the oral cavity with a big dental importance because they can affect the oral health of patients with chronic renal insufficiency. The objective of thi...

Our project involves connecting all level of students to science with limited funding available and having necessary resources to keep them updated. Students gain the opportunity to interact with others without having to leave the comfort of their schools. Through the Physics Portal, a door is automatically opened linking students to projects world...

The Levitated Dipole Experiment (LDX) is used to study the confinement properties of plasmas in a magnetic dipole field. In LDX a superconducting coil is levitated for up to 3 hours within a large vacuum chamber to produce the confining dipole field. The plasma experiments take place during this time, with ˜10 second plasma shots, one shot every ˜5...

En este trabajo se evidencia que si el éxito reproductivo de Rhodnius prolixus Stal está relacionado a la fuente alimentaria, entonces las necesidades biológicas del insecto son satisfechas en modos diferentes según el tipo de alternancia entre dichas fuentes de alimentación; tales diferencias son reveladas mediante los cambios en fertilidad y fecu...

Various approaches have been pursued to create stable atmospheric pressure discharges by extending the lifetime of the diffuse phase of the discharge to hundreds of microseconds. Previous research showed that the stability of the diffuse mode is dependent on the frequency (in the kHz range), gas type power, mode of the excitation, and geometrical c...

The aim of this study was to report on two patients with recurrent, paroxysmal, extracephalic pain triggered by yawning. Pain with yawning may occur in several conditions (secondary yawning pain) or develop in the absence of precipitating lesions (primary yawning pain). Primary yawning pain is normally of cephalic location. Methods used were clinic...

A report of two female patients with persistent unilateral retroauricular pain and cranial synkinesis following Bell's palsy. Pain occurred during menses in the first patient and was exacerbated by menses in the second patient. Retroauricular pain often precedes or follows Bell's palsy. Pain normally disappears within 2 weeks from the onset of para...

Keane described 2 patients with gaze-evoked blepharoclonus (BLC), a form of reflex BLC, and multiple sclerosis (MS). A search for common areas of demyelination and focal axonal atrophy (T1 black holes) of the central nervous system (CNS) in 11 patients with MS exhibiting eyelid closure BLC was conducted employing magnetic resonance imaging (MRI). F...

To analyze the clinical data and test results collected in a group of patients exhibiting eyelid-closure blepharoclonus (BLC) on clinical neurologic examination. Thirty-five patients were referred for neurologic evaluation for reasons other than BLC. Clinical electrophysiologic evaluations, including cranial nerve testing and electromyograms, were...

To describe a patient with facial pain, ipsilateral facial dystonia, and phantom supernumerary teeth, beginning after resection of hypertrophic gums. She had familial sensorineural deafness. Atypical cranial dystonia subsequent to dental procedures is associated with facial pain, dysesthesias, or phantom phenomena, but not with phantom supernumerar...

To describe a patient with specific hypoglycemia rebound migraine. There is an increased prevalence of headache in persons with diabetes. Although hypoglycemia may precipitate headache in some diabetic (and nondiabetic) patients, it is not a universal pathogenetic mechanism responsible for headache in those individuals or in normal fasting subjects...

Objective.?To describe a patient with facial pain, ipsilateral facial dystonia, and phantom supernumerary teeth, beginning after resection of hypertrophic gums. She had familial sensorineural deafness. Background.?Atypical cranial dystonia subsequent to dental procedures is associated with facial pain, dysesthesias, or phantom phenomena, but not wi...

To report a syndrome in 30 patients characterized by headache, myoclonic tremors of the eyelids (blepharoclonus), action tremors of the hands on flexion-extension movements at the wrists simulating asterixis (pseudoasterixis) and habitual diurnal movements of the feet. Ten patients are described in detail. Clinical history, neurologic examination,...

To describe three patients with recurrent severe paroxysmal headache precipitated by yawning. Pain elicited by yawning is a well-recognized clinical phenomenon in patients with cranial neuralgia, temporomandibular joint dysfunction syndrome and Eagle syndrome. Clinical history, neurological and oral examinations, brain magnetic resonance imaging (M...

Blepharoclonus (BLC) denotes a large amplitude, involuntary tremors of the orbicularis oculi muscles, observed during gentle closure of the eyelids. BLC may follow major head trauma. Four patients with Arnold-Chiari malformation (ACM) and BLC are described. The first patient had facial numbness for 5 months; the remaining patients had headaches fol...

A patient with hemophilia A and long-standing recurrent symptoms of idiopathic intracranial hypertension is described. During his relapses, he experienced headache, and attention and language disturbance, but no visual symptoms. Hemophilia A is a rare inherited coagulation disorder secondary to factor VIII deficiency. Idiopathic intracranial hypert...

To report a patient with multiple personality disorder who experienced severe acute headaches without warnings, solely during the transition between her host personality and her pain-prone personality. The initial detailed description of headache in multiple personality disorder was made by Packard and Brown and published in this journal 15 years a...

Ehlers-Danlos Syndrome (EDS) is a complex hereditary connective tissue disorder with neurologic manifestations that include cerebrovascular disorders and chronic pain. The clinical data collected on 18 patients with EDS and chronic headaches is reported. Clinical history, neurologic examination, computerized tomography of the head, magnetic resonan...

Ehlers-Danlos syndrome (EDS) is a complex hereditary connective tissue disorder infrequently reported in association with epilepsy. Seven patients with ages ranging from 28 to 70 years with EDS and epilepsy are described. Case review of clinical and diagnostic data. Two patients had occipital horn syndrome (EDS type IX) and partial seizures of prob...

Depression, mania, bipolar affective illness with rapid cycling, and paranoid schizophreniform psychoses are common sources of distress in individuals with multiple sclerosis (MS) exhibiting demyelinating plaques over the temporal lobes [1]. Dementia may occur in MS subjects. A previously reported patient with complex visual hallucinations of relig...

A young woman with frontal headaches of several months' evolution and monocular transient "tunnel" obscurations that developed after a generalized seizure is described. She had elevation of the optic discs (pseudopapilledema), greater on the side of her visual symptoms. No intracranial lesions were identified. Cerebrospinal fluid pressure was incre...

Two single men, one with compressive spondylitic cervical myelopathy and another with tethered cord and intraspinal lipoma, experienced severe paroxysmal ice pick-like pains, solely referred to the neck in the first and to the groin and genitalia in the second, that were precipitated by masturbation and masturbatory orgasms. Continuous, but less in...

A patient with recurrent exertional headaches was able, on multiple occasions, to trigger his typical headaches within 30 minutes of rubbing his eyes gently and inducing bilateral photopsias. No intracranial or orbital lesions were identified. His EEG, obtained while rubbing his eyes and inducing photopsias, did not show epileptic discharges or bac...

A woman with chronic posttraumatic axial lateropulsion cervical dystonia ("belly dancer's head") found relief of her spontaneous dystonic spasms by the sequential performance of an elaborate motor ritual. During an episode of left optic papillitis caused by central retinal vein occlusion, gaze-evoked amaurosis of the left eye developed, preceded by...

The cases of six patients with pronounced, persistent, isolated gaze-evoked orbicularis oculi myokymia (GEOM) discovered fortuitously are described. None had brain-stem lesions, and two had associated, unusual cranial synkinesis (trigeminofacial, hypoglossal-facial, and spinal accessory-facial). Additional features included asymmetric blinking and...

An adolescent with photosensitive epilepsy had absence seizures reproduced by forced voluntary eye closure in light or in darkness, independent of eyelid immobilization or ocular elevation. Attacks preferably occurred while speaking Spanish, her second language, mediated through brief, strong, automatic closing of the eyes during difficult word ret...

Locked-in syndrome (LIS) is a state of complete paralysis except for ocular movements in a conscious individual, normally resulting from brainstem lesions. We report three patients with acute brainstem strokes and LIS whose repeated EEG recordings exhibited an "alpha coma" pattern including an unreactive alpha rhythm to multimodal stimuli. This fin...

A 69-year-old male, with a history of a previous subdural hematoma, multistroke dementia and ventricular shunting for hydrocephalus, exhibited while comatose isolated periodic alternating rotatory nystagmus with cyclic pupillary changes and periodic alternating gaze. His simultaneous EEG showed PLEDs and subsequently burst-suppression pattern. The...

Forty-seven patients with one or more episodes of transient global amnesia (TGA) were studied by means of standard and 24-hour ambulatory cassette recording electroencephalography (EEG). Only one individual, with a left frontal hemorrhage, had intracranial lesions. TGA was multiple in 16 of the patients (34%), the attacks recurring with an average...

Temporal lobe syncope (TLS) is a term coined by Landolt. Characteristically, the patient has psychomotor and drop attacks, and the interictal electroencephalogram (EEG) shows temporal lobe epileptic abnormalities. TLS is synonymous with type III complex partial seizures (CPSs) in the Delgado Escueta classification. Several variants of TLS can be re...

It has been recently established that ictus emeticus originates from mesial temporal lobe structures. We herein report a patient with generalized epilepsy who exhibited ictus emeticus reflexly triggered by intermittent photic stimulation accompanied by generalized photoparoxysmal responses on the electroencephalogram. All seizures and EEG abnormali...

A patient had complex partial seizures manifested as transient confusion and profound bradycardia. These attacks were diagnosed by simultaneous EEG-ECG recordings and were suppressed by carbamazepine. Bradycardia is an exceptional cardiac accompaniment of partial seizures.

A patient developed spontaneous, acute, dominant frontal lobe haemorrhage neighbouring on a zone of pre-existing post-traumatic encephalomalacia manifesting clinically as transient global amnesia. Amnesia can be secondary to disease of the frontal lobe, affecting pathways interconnecting the basal forebrain and hippocampus of the temporal lobe.

Sixty-eight patients with symptomatic cervical whiplash injuries, who did not receive head trauma, had standard electroencephalograms performed with a time span of 1 day to 2 years after the occurrence of the accident. Minimal EEG abnormalities were found in a small number of patients. Plain x-rays, computerized tomography or radionuclide brain sca...

Two patients with acute unilateral infarction of the medial thalamus and upper mesencephalon exhibited ipsilateral nuclear involvement of the third nerve, contralateral skew deviation with weakness of eye elevation, and monocular downbeat nystagmus. Monocular downbeat nystagmus is a rare manifestation of combined nuclear-supranuclear ophthalmopares...

Spontaneous palinopsia (visual perseveration) and bitemporal visual extinction provoked only by ocular fixation developed in a patient with multiple sclerosis who had chronic bilateral retrobulbar optic neuritis. There were no signs of hemispheral compromise. The intermittent visual symptoms seemingly arose from the lesioned optic nerves, but were...

A 31-year-old man with secondary generalized epilepsy and atonic, tonic-clonic, focal motor, and absence seizures, had, in addition, autonomic seizures characterized by vomiting only. These seizures were always associated with a specific paroxysmal focal cerebral discharge recorded by simultaneous vieo and EEG.

A patient with partial seizures with complex symptomatology of left frontotemporal origin experienced audioalgesic and audiovisuoalgesic synesthesias.