Now showing items 1-20 of 21

    • Abnormal subcortical activity in congenital mirror movement disorder with RAD51 mutation 

      Demirayak, Pınar; Onat, Onur Emre; Gevrekci, A. Ö.; Gülsüner, S.; Uysal, H.; Bilgen, R.; Doerschner, Katja; Özçelik, Tayfun; Boyacı, Hüseyin (Turkish Society of Radiology, 2018)
      PURPOSE Congenital mirror movement disorder (CMMD) is characterized by unintended, nonsuppressible, homologous mirroring activity contralateral to the movement on the intended side of the body. In healthy controls, unilateral ...
    • Attention modulates neuronal correlates of interhemispheric integration and global motion perception 

      Akin, B.; Ozdem, C.; Eroglu, S.; Keskin, D. T.; Fang, F.; Doerschner, Katja; Kersten, D.; Boyacı, Hüseyin (Association for Research in Vision and Ophthalmology Inc., 2014)
      In early retinotopic areas of the human visual system, information from the left and right visual hemifields (VHFs) is processed contralaterally in two hemispheres. Despite this segregation, we have the perceptual experience ...
    • Disentangling simultaneous changes of surface and illumination 

      Ennis, R.; Doerschner, Katja (Elsevier, 2019)
      Retinally incident light is an ambiguous product of spectral distributions of light in the environment and their interactions with reflecting, absorbing, and transmitting materials. An ideal color constant observer ...
    • Expectations affect the perception of material properties 

      Alley, L. M.; Schmid, A. C.; Doerschner, Katja (Association for Research in Vision and Ophthalmology, 2020)
      Many objects that we encounter have typical material qualities: spoons are hard, pillows are soft, and Jell-O dessert is wobbly. Over a lifetime of experiences, strong associations between an object and its typical material ...
    • From hate to love: how learning can change affective responses to touched materials 

      Cavdan, M.; Freund, A.; Trieschmann, A.-K.; Doerschner, Katja; Drewing, K. (Springer Science and Business Media Deutschland GmbH, 2020)
      People display systematic affective reactions to specific properties of touched materials. For example, granular materials such as fine sand feel pleasant, while rough materials feel unpleasant. We wondered how far such ...
    • Gloss and speed judgments yield different fine tuning of saccadic sampling in dynamic scenes 

      Toscani, M.; Yücel, Ezgi I.; Doerschner, Katja (Sage Publications, 2019-12)
      Image motion contains potential cues about the material properties of objects. In earlier work, we proposed motion cues that could predict whether a moving object would be perceived as shiny or matte. However, whether the ...
    • Homozygosity mapping and targeted genomic sequencing reveal the game responsible for cerebellar hypoplasia and quadrupedal locomotion in a consanguineous kindred 

      Gulsuner, Süleyman; Tekinay, Ayşe Begüm; Doerschner, Katja; Boyaci, Hüseyin; Bilguvar, K.; Ünal, Hilal; Örs, Aslıhan; Onat, O. Emre; Atalar, Ergin; Basak, A. N.; Topaloglu, H.; Kansu, T.; Tan, M.; Tan, U.; Gunel, M.; Özçelik, Tayfun (Cold Spring Harbor Laboratory Press, 2011)
      The biological basis for the development of the cerebro-cerebellar structures required for posture and gait in humans is poorly understood. We investigated a large consanguineous family from Turkey exhibiting an extremely ...
    • Homozygous LAMC3 mutation links to structural and functional changes in visual attention networks 

      Ürgen, Buse M.; Topaç, Yasemin; Üstün, F. Seyhun; Demirayak, Pınar; Oğuz, Kader K.; Kansu, T.; Saygı, S.; Özçelik, Tayfun; Boyacı, Hüseyin; Doerschner, Katja (Elsevier, 2019)
      The occipital lobe contains a substantial part of the neural machinery involved in visual perception. Mutations in the LAMC3 gene have recently been shown to cause complex bilateral occipital cortical gyration abnormalities. ...
    • Identification of a novel missense mutation in RAD51 in a large family with congenital mirror movements 

      Onat, Onur Emre; Gülsüner, Süleyman; Bilgen, R.; Dal, G. M.; Bilguvar, K.; Boyacı, Hüseyin; Doerschner, Katja; Uysal, H.; Günel, M.; Özçelik, Tayfun (American Society of Human Genetics, 2012-11)
      Congenital mirror movements (CMM) are a rare and heterogeneous group of disorders characterized by involuntary contralateral movements of mainly the upper extremities during intentional movements on the opposite side. ...
    • Kandinsky or me? How free is the eye of the Beholder in abstract art? 

      Braun, D. I.; Doerschner, Katja (Sage Publications, 2019-09)
      We investigated in “art-naïve” German and Chinese participants the perception of color and spatial balance in abstract art. For color perception, we asked participants (a) to adjust the color of a single element in 24 ...
    • A motion feature-based algorithm for the detection of specular objects in natural scenes 

      Doerschner, Katja; Yılmaz, Özgür (Sage Publications, 2012-09)
      Successful identification of specularities in an image can be crucial for an artificial vision system when extracting the semantic content of an image or while interacting with the environment. We developed an algorithm ...
    • Object rigidity and reflectivity identification based on motion analysis 

      Zang, D.; Schrater P.R.; Doerschner, Katja (IEEE, 2010)
      Rigidity and reflectivity are important properties of objects, identifying these properties is a fundamental problem for many computer vision applications like motion and tracking. In this paper, we extend our previous ...
    • Rapid classification of surface reflectance from image velocities 

      Doerschner, Katja; Kersten, D.; Schrater P. (Springer, Berlin, Heidelberg, 2009)
      We propose a method for rapidly classifying surface reflectance directly from the output of spatio-temporal filters applied to an image sequence of rotating objects. Using image data from only a single frame, we compute ...
    • Rapid inference of object rigidity and reflectance using optic flow 

      Zang, D.; Doerschner, Katja; Schrater P.R. (Springer, Berlin, Heidelberg, 2009)
      Rigidity and reflectance are key object properties, important in their own rights, and they are key properties that stratify motion reconstruction algorithms. However, the inference of rigidity and reflectance are both ...
    • Recessive LAMC3 mutations cause malformations of occipital cortical development 

      Barak, T.; Kwan, K. Y.; Louvi, A.; Demirbilek, V.; Saygi, S.; Tüysüz, B.; Choi, M.; Boyacı, Hüseyin; Doerschner, Katja; Zhu, Y.; Kaymakçalan, H.; Yilmaz, S.; Bakircioglu, M.; Çağlayan, A. O.; Öztürk, A.K.; Yasuno, K.; Brunken W. J.; Atalar, Ergin; Yalçnkaya, C.; Dinçer, A.; Bronen, R. A.; Mane, S.; Özçelik, Tayfun; Lifton, R. P.; Šestan, N.; Bilgüvar, K.; Günel, M. (Nature Publishing Group, 2011)
      The biological basis for regional and inter-species differences in cerebral cortical morphology is poorly understood. We focused on consanguineous Turkish families with a single affected member with complex bilateral ...
    • Representing stuff in the human brain 

      Schmid, A. C.; Doerschner, Katja (Elsevier, 2019)
      Our experience of materials does not merely comprise judgments of single properties such as glossiness or roughness but is rather made up of a multitude of simultaneous impressions of qualities. To understand the neural ...
    • Seeing through transparent layers 

      Dövencioğlu, Dicle N.; Van Doorn, A.; Koenderink, J.; Doerschner, Katja (Association for Research in Vision and Ophthalmology, 2018)
      The human visual system is remarkably good at decomposing local and global deformations in the flow of visual information into different perceptual layers, a critical ability for daily tasks such as driving through rain ...
    • Shatter and splatter: the contribution of mechanical and optical properties to the perception of soft and hard breaking materials 

      Schmid, A. C.; Doerschner, Katja (Association for Research in Vision and Ophthalmology, 2018)
      Research on the visual perception of materials has mostly focused on the surface qualities of rigid objects. The perception of substance like materials is less explored. Here, we investigated the contribution of, and ...
    • Tract-based spatial statistics of diffusion tensor imaging in hereditary spastic paraplegia with thin corpus callosum reveals widespread white matter changes 

      Karlı-Oğuz, Kader; Şanverdi, Eser; Has, A.; Temuçin, Çağrı; Türk, Sueda; Doerschner, Katja (Turkish Society of Radiology, 2013)
      PURPOSE We aimed to investigate white matter diffusivity abnormalities in hereditary spastic paraplegia with thin corpus callosum (HSP-TCC) patients in relation with electrophysiological findings. MATERIALS AND METHODS ...
    • Visual adaptation to reflectance-specific image motion 

      Doerschner, Katja; Kam, T. E.; Kersten, D.; Fleming, R.; Seong-Whan, L. (Vision Sciences Society, 2012-05)
      Recently, we described several surface reflectance-specific motion characteristics that the visual system may use to determine whether a rotating object appears shiny or matte (Doerschner et al., 2011). We used an adaptation ...