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Fletta eftir efnisorði "Sjónskynjun"

Fletta eftir efnisorði "Sjónskynjun"

Röðun: Raða: Niðurstöður:

  • Rafiei, Mohsen (University of Iceland, School of Health Sciences, Faculty of Psychology, 2021-12-10)
    Our eyes are the primary gates to the visible world around us. Yet, whatever we perceive involves a translation of the patterns of the photons hitting our retinas into mental representations. It could be argued that visual perception is merely an ...
  • Brinkhuis, M. A. B.; Brascamp, J. W.; Kristjansson, Arni (SAGE Publications, 2018-11)
    During visual search, selecting a target facilitates search for similar targets in the future, known as search priming. During bistable perception, in turn, perceiving one interpretation facilitates perception of the same interpretation in the future, ...
  • Handsaker, Joseph C.; Brown, Steven J.; Petrovic, Milos; Bowling, Frank L.; Rajbhandari, Satyan; Marple-Horvat, Dilwyn E; Boulton, Andrew J.M.; Reeves, Neil D. (Elsevier BV, 2019-10)
    Introduction: Patients with diabetes and diabetic peripheral neuropathy (DPN) place their feet with less accuracy whilst walking, which may contribute to the increased falls-risk. This study examines the effects of a multi-faceted intervention on ...
  • Ólafsdóttir, Inga María (University of Iceland, School of Health Sciences, Faculty of Psychology, 2020-11)
    Visual attention has traditionally been studied with single-target search tasks where observers look for a single target and make a response, then the search is over and the trial ends. These studies have furthered our knowledge of visual attention ...
  • Hansmann-Roth, Sabrina; Kristjánsson, Árni; Whitney, David; Chetverikov, Andrey (2021-02-16)
    Our senses provide us with a rich experience of a detailed visual world, yet the empirical results seem to suggest severe limitations on our ability to perceive and remember. In recent attempts to reconcile the contradiction between what is experienced ...
  • Kristjánsson, Árni; Helgadóttir, Auður; Kristjánsson, Tómas (2021-02-10)
    Background: Foraging tasks have recently been increasingly used to investigate visual attention. Visual attention can be biased when certain stimuli capture our attention, especially threatening or anxiety-provoking stimuli, but such effects have not ...
  • Sigurðardóttir, Heiða María; Arnardóttir, Alexandra; Halldórsdóttir, Eydís Þuríður (2021-11-26)
    Faces and words are traditionally assumed to be independently processed. Dyslexia is also traditionally thought to be a non-visual deficit. Counter to both ideas, face perception deficits in dyslexia have been reported. Others report no such deficits. ...
  • Jozranjbar, Bahareh; Kristjánsson, Árni; Sigurðardóttir, Heiða María (2021-11-12)
    While dyslexia is typically described as a phonological deficit, recent evidence suggests that ventral stream regions, important for visual categorization and object recognition, are hypoactive in dyslexic readers who might accordingly show visual ...
  • Jozranjbar, Bahareh (University of Iceland, School of Health Sciences, Faculty of Psychology, 2023)
    This thesis probes the intricate nature of visual object recognition, especially how visual recognition skills are associated or dissociated in developmental disorders and the neurotypical population. Our primary areas of focus include the role of ...
  • Kristjánsson, Árni; Draschkow, Dejan (2021-03-31)
    Research within visual cognition has made tremendous strides in uncovering the basic operating characteristics of the visual system by reducing the complexity of natural vision to artificial but well-controlled experimental tasks and stimuli. This ...
  • Sigurdardottir, Heida Maria; Jozranjbar, Bahareh (Springer International Publishing, 2019)
    Face recognition is an essential skill that in many species is associated with apparently specialized neurological and cognitive mechanisms. This chapter summarizes some of the behavioral and neuroscientific research on laterality effects in face ...
  • Sigurdardottir, Heida Maria (Brown University, Providence, Rhode Island, 2013)
    In this thesis, we explore how objects affect the space around them. We show that spatial information is extracted from even completely novel objects. Information derived from the shape of objects is swiftly and automatically integrated into a variety ...
  • Sigurdardottir, Heida Maria; Hjartarson, Kristján Helgi; Guðmundsson, Guðbjörn Lárus; Kristjansson, Arni (Elsevier BV, 2019-05)
    Both intact and deficient neural processing of faces has been found in dyslexic readers. Similarly, behavioral studies have shown both normal and abnormal face processing in developmental dyslexia. We tested whether dyslexic adults are impaired in tests ...
  • Thornton, Ian M.; Tagu, Jérôme; Zdravković, Sunčica; Kristjánsson, Árni (2021-05-06)
    Attention is known to play an important role in shaping the behaviour of both human and animal foragers. Here, in three experiments, we built on previous interactive tasks to create an online foraging game for studying divided attention in human ...
  • Ásgeirsson, Árni; Kristjansson, Arni (Frontiers Media SA, 2014-04-10)
    Consistent financial reward of particular features influences the allocation of visual attention in many ways. More surprising are 1-trial reward priming effects on attention where reward schedules are random and reward on one trial influences attentional ...
  • Chetverikov, Andrey; Campana, Gianluca; Kristjansson, Arni (Association for Research in Vision and Ophthalmology (ARVO), 2017-02-28)
    We recently demonstrated that observers are capable of encoding not only summary statistics, such as mean and variance of stimulus ensembles, but also the shape of the ensembles. Here, for the first time, we show the learning dynamics of this process, ...
  • Hansmann-Roth, Sabrina; Chetverikov, Andrey; Kristjansson, Arni (Association for Research in Vision and Ophthalmology (ARVO), 2019-08-01)
    Objects have a variety of different features that can be represented as probability distributions. Recent findings show that in addition to mean and variance, the visual system can also encode the shape of feature distributions for features like color ...
  • Manassi, Mauro; Kristjansson, Arni; Whitney, David (Springer Science and Business Media LLC, 2019-12-01)
    In everyday life, we continuously search for and classify objects in the environment around us. This kind of visual search is extremely important when performed by radiologists in cancer image interpretation and officers in airport security screening. ...
  • Prpic, Valter; Kniestedt, Isabelle; Camilleri, Elizabeth; Gómez-Maureira, Marcello A.; Kristjansson, Arni; Thornton, Ian (Public Library of Science (PLoS), 2019-07-25)
    Traditional search tasks have taught us much about vision and attention. Recently, several groups have begun to use multiple-target search to explore more complex and temporally extended “foraging” behaviour. Many of these new foraging tasks, however, ...
  • Brinkhuis, M. A. B.; Kristjansson, Arni; Harvey, Ben M; Brascamp, Jan W (Oxford University Press (OUP), 2019-11-07)
    Priming of attention shifts involves the reduction in search RTs that occurs when target location or target features repeat. We used functional magnetic resonance imaging to investigate the neural basis of such attentional priming, specifically focusing ...