Sökning: "nystagmus"

Visar resultat 1 - 5 av 12 avhandlingar innehållade ordet nystagmus.

  1. 1. Characterisation of nystagmus waveforms in eye-tracker signals

    Författare :William Rosengren; Avdelningen för Biomedicinsk teknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Eye tracking; Signal processing; Nystagmus;

    Sammanfattning : This thesis deals with the analysis of eye–tracker signals recorded from nystagmus patients. Nystagmus is an eye movement disorder caused by an underlying condition, and patients who suffer from nystagmus express involuntary oscillating eye move- ments. LÄS MER

  3. 2. Persistent geotropic nystagmus : a different kind of cupula pathology

    Författare :Tatjana Tomanovic; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : In patients with positional vertigo a persistent positional direction-changing nystagmus (PDCN) of apogeotropic direction (a-PDCN) in the supine yaw plane has been described earlier 1-5. It has been suggested that the cupula in the lateral semicircular canal has a higher specific weight than the surrounding endolymph making the cupula sensitive to gravity. LÄS MER

  4. 3. Visual dysfunction and ocular signs associated with periventricular leukomalacia in children born preterm

    Författare :Lena Jacobson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :preterm; retinopathy of prematurity; periventricular leukornalacia; magnetic resonance imaging; delayed visual maturation; visual acuity; crowding; visual field; cognitive visual dysfunction; optic disc; cupping; eye movements; nystagmus; strabismus; reading;

    Sammanfattning : The immature visual system is vulnerable to adverse events in infants born preterm. Both retinopathy of prematurity and periventricular leukomalacia may affect visual function and ocular appearance. LÄS MER

  5. 4. Different neurophysiological methods for studying the vestibular system : evaluation of old methods and development of a new test procedure

    Författare :Birgitta Larsby; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : Different methods were used to study the physiology and anatomy of the vestibular system. 1) A primary vestibular cortical area in the cat was located and tested for somatosensory inflow by recordings of vestibular evoked potentials and extracellular single unit activity. LÄS MER

  7. 5. On visual impairment in Swedish children

    Författare :Jonas Blohmé; Lund Oftalmologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Ophtalmology; Sweden; sociology; mortality; outcome; epidemiology; registration; childhood blindness; Visual impairment; children; Oftalmologi;

    Sammanfattning : Knowledge of the epidemiology of visual impairment in children forms one of the cornerstones in paediatric ophthalmology. To gain an overview of the situation in Sweden an epidemiological study was performed. Totally 2373 visually impaired children were found, giving an age-specific prevalence of 10,9/10 000. Childhood blindness (i. LÄS MER