Sökning: "visual cortex"

Visar resultat 1 - 5 av 62 avhandlingar innehållade orden visual cortex.

  1. 1. Investigations of neural attractor dynamics in human visual awareness

    Författare :David N. Silverstein; Pawel Herman; Martin Ingvar; Karl Friston; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; TEKNIK OCH TEKNOLOGIER; MEDICIN OCH HÄLSOVETENSKAP; ENGINEERING AND TECHNOLOGY; MEDICAL AND HEALTH SCIENCES; attractor dynamics; visual awareness; visual perception; visual attention; attentional blink; backward masking; gliomas; brain tumor; white matter; cell assemblies; neocortical model; threat response; fear signaling; amygdala; Biologisk fysik; Biological Physics; Datalogi; Computer Science; Tillämpad matematik och beräkningsmatematik; Applied and Computational Mathematics;

    Sammanfattning : What we see, how we see it and what emotions may arise from stimuli has long been studied by philosophers, psychologists, medical doctors and neuroscientists. This thesis work investigates a particular view on the possible dynamics, utilizing computational models of spiking neural attractor networks. LÄS MER

  2. 2. The Serotonin Transporter and the Vesicular Monoamine Transporters During Development

    Författare :Stefan R Hansson; Lunds universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; whiskers; lateral geniculate; infraorbital nerve; neural crest; merkel; somatosensory cortex; Key wordscitalopram; thalamus; visual cortex; Physiology; Fysiologi;

    Sammanfattning : In the present study, the mRNA encoding the serotonin transporter (5-HTT) and two isoforms of the vesicular monoamine transporters (VMAT1 and VMAT2) have been mapped in the rat throughout gestation and early postnatal development using in situ hybridization, RT PCR and immunohistochemistry. 5-HTT mRNA was found in serotonergic neurons and VMAT2 mRNA in all monoaminergic neurons from early gestation. LÄS MER

  3. 3. A Canonical Model of the Primary Visual Cortex

    Författare :Baran Curuklu; Björn Lisper; Gaute Einevoll; Mälardalens högskola; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Computer science; Datavetenskap; Datavetenskap;

    Sammanfattning : Ny datormodell visar hur hjärnan behandlar informationBaran Çürüklüs forskning handlar om att förstå hur syncentret i hjärnan fungerar. Detta är viktigt för forskningen inom neurovetenskap och artificiell intelligens. LÄS MER

  4. 4. Effects of online advertising on children's visual attention and task performance during free and goal-directed internet use : A media psychology approach to children's website interaction and advert distraction

    Författare :Nils Holmberg; Humanistlaboratoriet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SOCIAL SCIENCES; online advertising; children; website interaction; visual attention; distraction; cognitive load; eye-tracking; task-orientation; media effects; visual saliency; executive functions; media literacy; inhibitory control;

    Sammanfattning : This dissertation consists of four eye-tracking studies that investigate how salient online advertising and children's level of executive function contributes to their advert distraction. In Study 1, children aged 9 were instructed to surf freely on the internet while all advert material appearing on-screen was registered. LÄS MER

  5. 5. Diffusion Tensor Imaging and Tractography of the Visual Pathways

    Författare :Ylva Lilja; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :Diffusion tensor imaging; Visual pathways; Tractography; Temporal lobe resection; Pituitary adenomas;

    Sammanfattning : The visual pathways are essential for human vision, stretching from the retinas of the eyes, via the anterior visual pathways and the optic radiations, to the primary visual cortex in the occipital lobe. Injury to these structures will lead to visual impairment – from small deficits to blindness. LÄS MER