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https://www.readbyqxmd.com/read/28524796/improvement-of-visual-field-defects-after-focal-resection-for-occipital-lobe-epilepsy-case-report
#1
Takahiro Yamamoto, Tadashi Hamasaki, Hideo Nakamura, Kazumichi Yamada
Improvement of visual field defects after surgical treatment for occipital lobe epilepsy is rare. Here, the authors report on a 24-year-old man with a 15-year history of refractory epilepsy that developed after he had undergone an occipital craniotomy to remove a cerebellar astrocytoma at the age of 4. His seizures started with an elementary visual aura, followed by secondary generalized tonic-clonic convulsion. Perimetry revealed left-sided incomplete hemianopia, and MRI showed an old contusion in the right occipital lobe...
May 19, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28521154/-the-world-is-upside-down-the-innsbruck-goggle-experiments-of-theodor-erismann-1883-1961-and-ivo-kohler-1915-1985
#2
Pierre Sachse, Ursula Beermann, Markus Martini, Thomas Maran, Markus Domeier, Marco R Furtner
The "Innsbruck Goggle Experiments" on long-term wearing of reversing mirrors, prismatic and half prismatic goggles, and colored half goggles represent a milestone in research on adaptation (adapting to the introduced "disturbance") and after-effects (after removal of the "disturbance"). By means of these goggles it is, for example, possible to invert or distort the visual field (such as flipping top and bottom or left and right), as well as to observe how individuals learn to change the image back to vertical or recognize left and right...
April 23, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28512508/lhermitte-duclos-disease-and-cerebellar-gangliocytoma-an-incidental-finding-in-a-patient-with-gradual-vision-loss
#3
Akshay Badakere, Pratik Chaugule, Soveeta Souravee Rath
A 50-year-old male patient presented to the neuro-ophthalmology clinic with chief complaints of gradual decrease in vision in both eyes, more in the left eye, for 6 years. On general examination, the patient had a hemiplegic gait. His presenting acuity was 20/50 in the right eye and 20/320 in the left eye, not improving further. He had dense posterior subcapsular cataracts in both eyes, and fundus examination revealed pale discs. Humphrey visual field tests 30-2 revealed a vertical nasal midline defect in the right eye and grossly depressed fields in the left eye...
June 2017: Neuro-ophthalmology
https://www.readbyqxmd.com/read/28507834/clinical-and-radiological-improvement-following-ozone-disc-nucleolysis-a-case-report
#4
Sharad Ghatge, Pranav D Modi, Dhaval B Modi
The results of traditional open surgery for herniated intervertebral disc are often limited by complications and failed back surgery syndrome (FBSS). Over the past few decades, a considerable amount of research has been done in the field of minimally invasive procedures as a treatment option for herniated intervertebral disc disease. Ozone disc nucleolysis is one such procedure which has results equal to or better than traditional surgery with virtually no complications. A 27-year-old post-partum female presented to the clinic with acute onset of severe lower back pain radiating to the left lower limb for one month...
April 13, 2017: Curēus
https://www.readbyqxmd.com/read/28501539/spatiotemporal-oscillatory-dynamics-of-visual-selective-attention-during-a-flanker-task
#5
Timothy J McDermott, Alex I Wiesman, Amy L Proskovec, Elizabeth Heinrichs-Graham, Tony W Wilson
The flanker task is a test of visual selective attention that has been widely used to probe error monitoring, response conflict, and related constructs. However, to date, few studies have focused on the selective attention component of this task and imaged the underlying oscillatory dynamics serving task performance. In this study, 21 healthy adults successfully completed an arrow-based version of the Eriksen flanker task during magnetoencephalography (MEG). All MEG data were pre-processed and transformed into the time-frequency domain...
May 10, 2017: NeuroImage
https://www.readbyqxmd.com/read/28501142/charcot-past-and-present
#6
REVIEW
C G Goetz
Jean-Martin Charcot (1825-1893) was the preeminent neurologist of the nineteenth century. Several of his major contributions remain fully relevant to contemporary neurology, and this essay highlights three areas of particular importance to the modern neurologist: the anatomo-clinical method that Charcot developed as the anchor of neurological study; the integration of new scientific discoveries from other fields as a core strategy for neurological advancement; and the role of heredity as the fundamental etiological focus to the understanding of the pathogenesis of primary neurological disorders...
May 10, 2017: Revue Neurologique
https://www.readbyqxmd.com/read/28481069/-laparoscopic-adrenalectomy-advantages-of-the-minimally-invasive-approach
#7
P Rodríguez Iglesias, J Gómez-Chacón Villalba, L Rodríguez Caraballo, P Ortolá Fortes, J Cortés Sáez, A Marco Macián, J J Vila Carbó
AIM: To describe our experience as a tertiary center on the use of laparoscopic adrenal surgery in children. MATERIAL AND METHODS: A descriptive, retrospective study of patients with pathologic adrenal masses undergoing laparoscopic adrenal surgery, between 2012 and 2015. Epidemiological variables, surgical technique, complications and follow-up were studied. RESULTS: Nine patients were studied with a median age of 62 months (5-184). In 3 patients (33...
October 10, 2016: Cirugía Pediátrica: Organo Oficial de la Sociedad Española de Cirugía Pediátrica
https://www.readbyqxmd.com/read/28479711/comparative-analysis-of-lip-with-thumbprints-an-identification-tool-in-personal-authentication
#8
Rashmi Naik, B R Ahmed Mujib, Neethu Telagi, Jaydeva Hallur
CONTEXT: Identification of person living or dead using diverse characteristics is the basis in forensic science. The uniqueness of lip and fingerprints and further, association between them can be useful in establishing facts in legal issues. AIMS: The present study was carried out to determine the distribution of different lip print patterns among subjects having different thumbprint patterns and to determine the correlation between lip print patterns and thumbprint patterns...
January 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/28456522/how-handedness-influences-perceptual-and-attentional-processes-during-rapid-serial-visual-presentation
#9
Kamila Śmigasiewicz, Matthias Liebrand, Johannes Landmesser, Rolf Verleger
Stimulus-driven orienting of visual attention is lateralized to the right hemisphere (RH). This lateralization has been studied in the dual-stream rapid serial visual presentation task (dual RSVP). In this task a second target (T2), hard to discern by being embedded in one of two lateral streams of rapidly changing distractors, is better identified on the left than on the right. This phenomenon is called the left visual field advantage (LVFA). Furthermore, in terms of event related potentials (ERPs), the N2pc component and visual evoked potentials (VEPs) are evoked earlier at the RH than at the left hemisphere (LH)...
April 26, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28444373/plasticity-of-the-right-lateralized-cognitive-reserve-network-in-ageing
#10
Méadhbh B Brosnan, Giorgia Demaria, Anders Petersen, Paul M Dockree, Ian H Robertson, Iris Wiegand
Cognitive reserve (CR) is the phenomenon where older adults with more cognitively stimulating environments show less age-related cognitive decline. The right-lateralized fronto-parietal network has been proposed to significantly contribute to CR and visual attention in ageing. In this study we tested whether plasticity of this network may be harnessed in ageing.We assessed CR and parameters of visual attention capacity in older adults. Transcranial direct current stimulation (tDCS) was employed to increase right fronto-parietal activity during a lateralized whole-report task...
April 24, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28438131/tablets-at-the-bedside-ipad-based-visual-field-test-used-in-the-diagnosis-of-intrasellar-haemangiopericytoma-a-case-report
#11
Nisha Nesaratnam, Peter B M Thomas, Ramez Kirollos, Algis J Vingrys, George Y X Kong, Keith R Martin
BACKGROUND: In the assessment of a pituitary mass, objective visual field testing represents a valuable means of evaluating mass effect, and thus in deciding whether surgical management is warranted. CASE PRESENTATION: In this vignette, we describe a 73 year-old lady who presented with a three-week history of frontal headache, and 'blurriness' in the left side of her vision, due to a WHO grade III anaplastic haemangiopericytoma compressing the optic chiasm. We report how timely investigations, including an iPad-based visual field test (Melbourne Rapid Field, (MRF)) conducted at the bedside aided swift and appropriate management of the patient...
April 24, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28424467/the-time-course-of-spatial-attention-shifts-in-elementary-arithmetic
#12
Dixiu Liu, Danni Cai, Tom Verguts, Qi Chen
It has been proposed that elementary arithmetic induces spatial shifts of attention. However, the timing of this arithmetic-space association remains unknown. Here we investigate this issue with a target detection paradigm. Detecting targets in the right visual field was faster than in the left visual field when preceded by an addition operation, while detecting targets in the left visual field was faster than in the right visual field when preceded by a subtraction operation. The arithmetic-space association was found both at the end of the arithmetic operation and during calculation...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28418457/the-field-of-view-available-to-the-ventral-occipito-temporal-reading-circuitry
#13
Rosemary Le, Nathan Witthoft, Michal Ben-Shachar, Brian Wandell
Skilled reading requires rapidly recognizing letters and word forms; people learn this skill best for words presented in the central visual field. Measurements over the last decade have shown that when children learn to read, responses within ventral occipito-temporal cortex (VOT) become increasingly selective to word forms. We call these regions the VOT reading circuitry (VOTRC). The portion of the visual field that evokes a response in the VOTRC is called the field of view (FOV). We measured the FOV of the VOTRC and found that it is a small subset of the entire field of view available to the human visual system...
April 1, 2017: Journal of Vision
https://www.readbyqxmd.com/read/28415897/electric-field-navigated-transcranial-magnetic-stimulation-for-chronic-tinnitus-a-randomized-placebo-controlled-study
#14
Hanna Sahlsten, Juuso Virtanen, Juho Joutsa, Katri Niinivirta-Joutsa, Eliisa Löyttyniemi, Reijo Johansson, Janika Paavola, Tero Taiminen, Noora Sjösten, Jaakko Salonen, Anu Holm, Esa Rauhala, Satu K Jääskeläinen
OBJECTIVE: Repetitive transcranial magnetic stimulation (rTMS) may alleviate tinnitus. We evaluated effects of electric field (E-field) navigated rTMS targeted according to tinnitus pitch. No controlled studies have investigated anatomically accurate E-field-rTMS for tinnitus. DESIGN: Effects of E-field-rTMS were evaluated in a prospective randomised placebo-controlled 6-month follow-up study on parallel groups. Patients received 10 sessions of 1 Hz rTMS or placebo targeted to the left auditory cortex corresponding to tonotopic representation of tinnitus pitch...
April 18, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28414092/numbers-and-functional-lateralization-a-visual-half-field-and-dichotic-listening-study-in-proficient-bilinguals
#15
Michal Klichowski, Gregory Króliczak
Potential links between language and numbers and the laterality of symbolic number representations in the brain are still debated. Furthermore, reports on bilingual individuals indicate that the language-number interrelationships might be quite complex. Therefore, we carried out a visual half-field (VHF) and dichotic listening (DL) study with action words and different forms of symbolic numbers used as stimuli to test the laterality of word and number processing in single-, dual-language and mixed -task and language- contexts...
April 14, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28413837/familial-exudative-vitreoretinopathy-presentation-as-persistent-fetal-vasculature
#16
Jeffrey Z Kartchner, M Elizabeth Hartnett
PURPOSE: To illustrate a presentation of familial exudative vitreoretinopathy (FEVR) that can be mistaken for unilateral persistent fetal vasculature (PFV) and the importance of wide angle fluorescein angiography in making this distinction. A patient was referred with a unilateral retrolental membrane and retinal detachment from PFV but was found to have FEVR. OBSERVATIONS: A 4 month-old full-term infant was referred with the diagnosis of PFV based on findings of a dense retrolental membrane and microphthalmia in the left eye...
June 2017: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/28396814/the-histopathological-finding-of-the-surgically-extracted-atypical-dome-shaped-choroidal-osteoma
#17
Hirona Bessho, Hisanori Imai, Atsushi Azumi
Purpose. To report a case of atypical dome-shaped choroidal osteoma, which was diagnosed by histopathological finding of surgically extracted tumor. Case Report. A 35-year-old woman presented with visual field abnormality in the left eye (OS). Her best-corrected visual acuity with Landolt ring chart was 1.0 OS. The funduscopic examination revealed a yellowish dome-shaped choroidal tumor located in the temporal side of the macula with exudative retinal detachment. 25-gauge pars plana vitrectomy and the extraction of the tumor were performed for the definitive diagnosis...
2017: Case Reports in Ophthalmological Medicine
https://www.readbyqxmd.com/read/28396097/an-fmri-study-of-visual-hemifield-integration-and-cerebral-lateralization
#18
Lars Strother, Zhiheng Zhou, Alexandra K Coros, Tutis Vilis
The human brain integrates hemifield-split visual information via interhemispheric transfer. The degree to which neural circuits involved in this process behave differently during word recognition as compared to object recognition is not known. Evidence from neuroimaging (fMRI) suggests that interhemispheric transfer during word viewing converges in the left hemisphere, in two distinct brain areas, an "occipital word form area" (OWFA) and a more anterior occipitotemporal "visual word form area" (VWFA). We used a novel fMRI half-field repetition technique to test whether or not these areas also integrate nonverbal hemifield-split string stimuli of similar visual complexity...
April 7, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28395868/retinal-slippage-fold-causing-a-matching-contralateral-scotoma
#19
Jesse Gale, Keith Small
We describe a unique case in which a retinal slippage fold after right retinal detachment surgery resulted in a contralateral monocular scotoma. The scotoma in the left visual field matched the right retinal fold in visual space. This previously undescribed phenomenon could be explained by a lack of response from visual cortical neurons receiving inputs from the redundant folded retina. This may represent a top-down plasticity in the cortical retinotopic map.
April 7, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28393011/motivated-attention-and-family-risk-for-depression-neuronal-generator-patterns-at-scalp-elicited-by-lateralized-aversive-pictures-reveal-blunted-emotional-responsivity
#20
Jürgen Kayser, Craig E Tenke, Karen S Abraham, Daniel M Alschuler, Jorge E Alvarenga, Jamie Skipper, Virginia Warner, Gerard E Bruder, Myrna M Weissman
Behavioral and electrophysiologic evidence suggests that major depression (MDD) involves right parietotemporal dysfunction, a region activated by arousing affective stimuli. Building on prior event-related potential (ERP) findings (Kayser et al. 2016 NeuroImage 142:337-350), this study examined whether these abnormalities also characterize individuals at clinical high risk for MDD. We systematically explored the impact of family risk status and personal history of depression and anxiety on three distinct stages of emotional processing comprising the late positive potential (LPP)...
2017: NeuroImage: Clinical
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