Search for dissertations about: "small eye"

Showing result 1 - 5 of 84 swedish dissertations containing the words small eye.

  1. 1. Ommatidial adaptations for vision in nocturnal insects

    Author : Rikard Frederiksen; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Gain of transduction; Information rate; Signal-to-noise ratio; Apposition eye; Optical sensitivity; Nocturnal insects; Superposition eye; Vision;

    Abstract : Nocturnal vision is a demanding task for insects with small eyes. As it gets dimmer the noise imposed by the stochastic nature of photon arrival makes vision unreliable. Despite this, there are quite a number of animal species that are active at night and apparently see well. READ MORE

  2. 2. Mechanisms controlling striatal projection neurone generation, from patterning to early differentiation

    Author : Håkan Toresson; Klinisk minnesforskning; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; pbx; meis; sonic hedgehog; small eye; pax6; gsh2; gsh1; cerebral cortex; striatum; telencephalon; mutant; development; mouse; embryo; retinoic acid; Clinical biology; Klinisk biologi;

    Abstract : The striatum is part of the telencephalon, the most anterior part of the vertebrate brain. From when it first can be identified, telencephalic morphology is highly complex and a wide range of mechanisms has been suggested to participate in its induction, patterning and neurogenesis. READ MORE

  3. 3. Reading Development and Reading Disability : Analyses of eye-movements and word recognition

    Author : Christer Jacobson; Institutionen för psykologi; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Applied and experimental psychology; eye-movements; gender differences; growth-curves; reading disability; Word recognition; reading development; Tillämpad och experimentell psykologi;

    Abstract : The primary ambition of this doctoral thesis is to provide an empirical basis for a better understanding of reading disability among school children. The current consensus in the research community is that most disabled readers fail in the acquisition of fast, accurate and automatic word recognition. READ MORE

  4. 4. Calibration in deep-learning eye tracking

    Author : Erik Lindén; Alexandre Proutiere; Thomas Schön; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Personal variations severely limit the performance of appearance-based gaze tracking. Adapting to these variations using standard neural network model adaptation methods is difficult. The problems range from overfitting, due to small amounts of training data, to underfitting, due to restrictive model architectures. READ MORE

  5. 5. α1- and α2-Adrenoceptors in the Eye : Pharmacological and Functional Characterization

    Author : Anna Wikberg-Matsson; Thomas Mittag; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neurosciences; α1-adrenoceptor subtypes; α2-adrenoceptor subtypes; iris; ciliary body; choroid; retina; ciliary artery; Neurovetenskap; Neurology; Neurologi; Ophtalmology; oftalmiatrik;

    Abstract : α1- and α2-Adrenoceptors are involved in various physiological events in the eye: blood flow regulation, aqueous humor dynamics and pupil regulation. The α1- and α2-adrenoceptors can be further subdivided into six subtypes (α1A, α1B, α1D, α2A , α2B, and α2C ). READ MORE