Sökning: "electroretinogram"

Visar resultat 1 - 5 av 7 avhandlingar innehållade ordet electroretinogram.

  1. 1. Bothnia dystrophy, a clinical, genetical and electrophysiological study

    Författare :Marie Burstedt; Ola Sandgren; Ola Textorius; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Ophtalmology; retinal pigment epithelium; retinitis pigmentosa; neural retina; electroretinogram; cellular retinaldehyde-binding protein; dark adaptometry; retinal degeneration; Oftalmiatrik; Ophtalmology; Oftalmologi; Ophtalmology; oftalmiatrik;

    Sammanfattning : A high frequency of retinitis pigmentosa (RP) is found in Northern Sweden. In an inventory of autosomal recessive RP patients in Västerbotten County, a great number of cases with a unique phenotype was noticed, denoted Bothnia Dystrophy (BD). LÄS MER

  3. 2. Structure and Function of the Retina in Children Born Extremely Preterm and in Children Born At Term

    Författare :Anna Molnar; Gerd E. Holmström; Eva K. B. Larsson; Sten O. Andréasson; Christopher J. Lyons; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; optical coherence tomography; multifocal electroretinogram; full-field electroretinography; extremely preterm children; retinopathy of prematurity; gestational age; gender; Ophtalmology; Oftalmiatrik;

    Sammanfattning : Background: Optical coherence tomography (OCT), multifocal electroretinography (mfERG) and full-field electroretinography (ffERG) give important information about retinal structure and function.Purpose: To collect normative data of macular Cirrus Spectral domain (SD)-OCT assessments and of mfERG measurements of healthy children (papers I and II). LÄS MER

  4. 3. The direct current electroretinogram and the standing potential of the rabbit under different stimulus and adapting conditions

    Författare :Eva Gottvall; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : The electroretinograrn (ERG) reflects the summation of electrical responses generated by neurons and non-neuronal cells in the retina and pigment epithelium in response to light. The major ERG components are the fast, negative a-wave, the fast, positive b-wave and the slow, positive c-wave. LÄS MER

  5. 4. Signal identification for visual electrophysiological recordings. A comparison of signal analysis techniques and their application to clinical electrophysiology of vision

    Författare :Thomas Wright; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Visual Electrophysiology; Signal detection; Signal-to-Noise Ratio; multivariate analysis; spatial-temporal partial least-squares;

    Sammanfattning : Aims: The aim of this thesis was to investigate the use of objective methods for the analysis of visual electrophysiological recordings. Specifically can signal identification algorithms identify electrophysiological signals and can they be applied to improve clinical testing and analysis? Methods: Automated signal identification algorithms were applied to multifocal electroretinogram (mfERG) and visual evoked potential (VEP) recordings. LÄS MER

  7. 5. Phenotypes and genotypes in families with hereditary tapetoretinal degenerations

    Författare :Vesna Ponjavic; Lund Oftalmologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; peripherin.; rhodopsin; cone-rod dystrophy; retinitis pigmentosa; choroideremia; central areolar choroidal dystrophy; mutation screening; full-field electroretinography; Phenotype; genotype; Ophtalmology; Oftalmologi;

    Sammanfattning : The purpose of the study was to characterise the phenotype with emphasis on electroretinography in four different types of hereditary retinal degeneration and to correlate it to a genotype when possible. Two methods were used: full-field electroretinography for objective assessment of retinal function and mutation screening of blood samples for detection of gene alterations. LÄS MER