Sökning: "eye movements"

Visar resultat 11 - 15 av 76 avhandlingar innehållade orden eye movements.

  1. 11. From Eye to Mind : Early Visuomotor Performance and Developmental Trajectories in Children Born Preterm

    Författare :Ylva Fredriksson Kaul; Lena Hellström-Westas; Claes von Hofsten; Kerstin Rosander; Katarina Strand Brodd; Birgitta Böhm; Audrey van der Meer; Uppsala universitet; []
    Nyckelord :Children born very preterm; Visual tracking; Reaching; Neurodevelopment; Predictive control; Attention; Cognition; Psychology; Psykologi; Medicinsk vetenskap; Medical Science;

    Sammanfattning : Children born very preterm, at less than 32 weeks of gestation, have an increased risk of developing problems with attention, cognition, perception and motor function. Despite this, the developmental trajectories leading from preterm birth to later impairments are not fully understood. LÄS MER

  3. 12. 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

  4. 13. Detailed analysis of slow oscillatory movements of eye position

    Författare :Bing Zhang; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Our eyes make continuous movements even when attempting to fixate a stationary object. The involuntary eye movements occurring during fixation are referred to as fixational eye movements. There is a general agreement on three types of eye movements occurring during visual fixation: tremor, drift and microsaccade. LÄS MER

  5. 14. Predictive eyes precede retrieval : visual recognition as hypothesis testing

    Författare :Linus Holm; Timo Mäntylä; Lars Nyberg; David Melcher; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; declarative memory; face perception; object recognition; scene recognition; eye movements; visual awareness; recollection; familiarity; Psychology; Psykologi;

    Sammanfattning : Does visual recognition entail verifying an idea about what is perceived? This question was addressed in the three studies of this thesis. The main hypothesis underlying the investigation was that visual recognition is an active process involving hypothesis testing. LÄS MER

  7. 15. Evolution of Vertebrate Eyes: a study on lens suspension and optical proterties

    Författare :Ola Gustafsson; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; evolution; eye; fish; crystalline lens; lens suspension; multifocal optical systems; Agnatha; Actinopterygii; Chondrichthyes; Vertebrate; Sarcopterygii;

    Sammanfattning : Many fishes have well-developed visual systems with color vision capabilities. The crystalline lens is the major refractive element in a fish eye since the cornea is optically inactive underwater. A typical fish eye has a large pupil and a lens of short focal length, features that increase light gathering ability. LÄS MER