Now showing items 1-20 of 49

    • A halo visual illusion. 

      Rubin, DC; Rebson, DJ (Perception, 1977-01)
      A visual illusion consisting of transparent halos extending beyond the boundaries of rotating discs is reported. The effect can be obtained by rotating a variety of black-and-white discs at moderate speeds. It is not due ...
    • A pilot investigation of audiovisual processing and multisensory integration in patients with inherited retinal dystrophies. 

      Myers, Mark H; Iannaccone, Alessandro; Bidelman, Gavin M (BMC ophthalmology, 2017-12-07)
      In this study, we examined audiovisual (AV) processing in normal and visually impaired individuals who exhibit partial loss of vision due to inherited retinal dystrophies (IRDs).Two groups were analyzed for this pilot study: ...
    • A Refined Neuronal Population Measure of Visual Attention. 

      Mayo, J Patrick; Cohen, Marlene R; Maunsell, John HR (PloS one, 2015-01)
      Neurophysiological studies of cognitive mechanisms such as visual attention typically ignore trial-by-trial variability and instead report mean differences averaged across many trials. Advances in electrophysiology allow ...
    • Action video game playing is associated with improved visual sensitivity, but not alterations in visual sensory memory. 

      Appelbaum, L Gregory; Cain, Matthew S; Darling, Elise F; Mitroff, Stephen R (Atten Percept Psychophys, 2013-08)
      Action video game playing has been experimentally linked to a number of perceptual and cognitive improvements. These benefits are captured through a wide range of psychometric tasks and have led to the proposition that action ...
    • Activation in mesolimbic and visuospatial neural circuits elicited by smoking cues: evidence from functional magnetic resonance imaging. 

      Due, Deborah L; Huettel, Scott A; Hall, Warren G; Rubin, David C (Am J Psychiatry, 2002-06)
      OBJECTIVE: The authors sought to increase understanding of the brain mechanisms involved in cigarette addiction by identifying neural substrates modulated by visual smoking cues in nicotine-deprived smokers. METHOD: Event-related ...
    • Age mediation of frontoparietal activation during visual feature search. 

      Madden, David J; Parks, Emily L; Davis, Simon W; Diaz, Michele T; Potter, Guy G; Chou, Ying-hui; Chen, Nan-kuei; ... (8 authors) (Neuroimage, 2014-11-15)
      Activation of frontal and parietal brain regions is associated with attentional control during visual search. We used fMRI to characterize age-related differences in frontoparietal activation in a highly efficient feature ...
    • Age-related preservation of top-down control over distraction in visual search. 

      Costello, Matthew C; Madden, David J; Shepler, Anne M; Mitroff, Stephen R; Leber, Andrew B (Experimental aging research, 2010-07)
      Visual search studies have demonstrated that older adults can have preserved or even increased top-down control over distraction. However, the results are mixed as to the extent of this age-related preservation. The present ...
    • Assessing visual requirements for social context-dependent activation of the songbird song system. 

      Hara, Erina; Kubikova, Lubica; Hessler, Neal A; Jarvis, Erich D (Proc Biol Sci, 2009-01-22)
      Social context has been shown to have a profound influence on brain activation in a wide range of vertebrate species. Best studied in songbirds, when males sing undirected song, the level of neural activity and expression ...
    • Behavioural and physiological limits to vision in mammals. 

      Field, Greg D; Sampath, Alapakkam P (Philosophical transactions of the Royal Society of London. Series B, Biological sciences, 2017-04)
      Human vision is exquisitely sensitive-a dark-adapted observer is capable of reliably detecting the absorption of a few quanta of light. Such sensitivity requires that the sensory receptors of the retina, rod photoreceptors, ...
    • Chaos in percepts? 

      Richards, W; Wilson, HR; Sommer, MA (Biol Cybern, 1994)
      Multistability in perceptual tasks has suggested that the mechanisms underlying our percepts might be modeled as nonlinear, deterministic systems that exhibit chaotic behavior. We present evidence supporting this view, obtaining ...
    • Configural specificity of the lateral occipital cortex. 

      Appelbaum, LG; Ales, JM; Cottereau, B; Norcia, AM (Neuropsychologia, 2010-09)
      While regions of the lateral occipital cortex (LOC) are known to be selective for objects relative to feature-matched controls, it is not known what set of cues or configurations are used to promote this selectivity. Many ...
    • Cortical Brain Activity Reflecting Attentional Biasing Toward Reward-Predicting Cues Covaries with Economic Decision-Making Performance. 

      San Martín, René; Appelbaum, Lawrence G; Huettel, Scott A; Woldorff, Marty G (Cereb Cortex, 2016-01)
      Adaptive choice behavior depends critically on identifying and learning from outcome-predicting cues. We hypothesized that attention may be preferentially directed toward certain outcome-predicting cues. We studied this ...
    • Cortical dynamics during naturalistic sensory stimulations: experiments and models. 

      Mazzoni, Alberto; Brunel, Nicolas; Cavallari, Stefano; Logothetis, Nikos K; Panzeri, Stefano (Journal of physiology, Paris, 2011-01)
      We report the results of our experimental and theoretical investigations of the neural response dynamics in primary visual cortex (V1) during naturalistic visual stimulation. We recorded Local Field Potentials (LFPs) and ...
    • Cross-modal stimulus conflict: the behavioral effects of stimulus input timing in a visual-auditory Stroop task. 

      Donohue, Sarah E; Appelbaum, Lawrence G; Park, Christina J; Roberts, Kenneth C; Woldorff, Marty G (PLoS One, 2013)
      Cross-modal processing depends strongly on the compatibility between different sensory inputs, the relative timing of their arrival to brain processing components, and on how attention is allocated. In this behavioral study, ...
    • Data-driven and memory-driven selective attention in visual search. 

      Madden, DJ (Journal of gerontology, 1984-01)
      The present experiment investigated Rabbitt's (1979) hypothesis that age differences in selective attention occur when memory-driven processing must be employed. Young and older adults performed a visual search task, which, ...
    • Drivers from the deep: the contribution of collicular input to thalamocortical processing. 

      Wurtz, Robert H; Sommer, Marc A; Cavanaugh, James (Prog Brain Res, 2005)
      A traditional view of the thalamus is that it is a relay station which receives sensory input and conveys this information to cortex. This sensory input determines most of the properties of first order thalamic neurons, ...
    • Efficient coding of spatial information in the primate retina. 

      Doi, Eizaburo; Gauthier, Jeffrey L; Field, Greg D; Shlens, Jonathon; Sher, Alexander; Greschner, Martin; Machado, Timothy A; ... (14 authors) (The Journal of neuroscience : the official journal of the Society for Neuroscience, 2012-11)
      Sensory neurons have been hypothesized to efficiently encode signals from the natural environment subject to resource constraints. The predictions of this efficient coding hypothesis regarding the spatial filtering properties ...
    • Experimental manipulations of the phenomenology of memory. 

      Rubin, David C; Burt, Christopher DB; Fifield, Sarah J (Mem Cognit, 2003-09)
      We investigated the effects of visual input at encoding and retrieval on the phenomenology of memory. In Experiment 1, participants took part in events with and without wearing blindfolds, and later were shown a video of ...
    • Frontal eye field sends delay activity related to movement, memory, and vision to the superior colliculus. 

      Sommer, MA; Wurtz, RH (J Neurophysiol, 2001-04)
      Many neurons within prefrontal cortex exhibit a tonic discharge between visual stimulation and motor response. This delay activity may contribute to movement, memory, and vision. We studied delay activity sent from the frontal ...
    • Functional brain connectivity and cognition: effects of adult age and task demands. 

      Chou, Ying-Hui; Chen, Nan-Kuei; Madden, David J (Neurobiology of aging, 2013-08)
      Previous neuroimaging research has documented that patterns of intrinsic (resting state) functional connectivity (FC) among brain regions covary with individual measures of cognitive performance. Here, we examined the relation ...