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Interictal Neurocognitive Processing Of Visual Stimuli In Migraine: Evidence From Event-Related Potentials, Marla J. S Mickleborough, Christine M. Chapman, Andreea Simina Toma, Jeremy H. M Chan, Grace Truong, Todd C. Handy
Interictal Neurocognitive Processing Of Visual Stimuli In Migraine: Evidence From Event-Related Potentials, Marla J. S Mickleborough, Christine M. Chapman, Andreea Simina Toma, Jeremy H. M Chan, Grace Truong, Todd C. Handy
Dartmouth Scholarship
Research has established decreased sensory habituation as a defining feature in migraine, while decreased cognitive habituation has only been found with regard to cognitive assessment of the relative probability of the occurrence of a stimulus event. Our study extended the investigation of interictal habituation in migraine to include cognitive processing when viewing of a series of visually-complex images, similar to those we encounter on the internet everyday. We examined interictal neurocognitive function in migraine from a habituation perspective, using a novel paradigm designed to assess how the response to a series of images changes over time. Two groups of participants--migraineurs …
The Touchscreen Operant Platform For Testing Working Memory And Pattern Separation In Rats And Mice., Charlotte A Oomen, Martha Hvoslef-Eide, Christopher J Heath, Adam C Mar, Alexa E Horner, Timothy J Bussey, Lisa M Saksida
The Touchscreen Operant Platform For Testing Working Memory And Pattern Separation In Rats And Mice., Charlotte A Oomen, Martha Hvoslef-Eide, Christopher J Heath, Adam C Mar, Alexa E Horner, Timothy J Bussey, Lisa M Saksida
Brain and Mind Institute Researchers' Publications
The automated touchscreen operant chamber for rats and mice allows for the assessment of multiple cognitive domains within the same testing environment. This protocol presents the location discrimination (LD) task and the trial-unique delayed nonmatching-to-location (TUNL) task, which both assess memory for location. During these tasks, animals are trained to a predefined criterion during ∼20-40 daily sessions. In LD sessions, touching the same location on the screen is rewarded on consecutive trials, followed by a reversal of location-reward contingencies. TUNL, a working memory task, requires animals to 'nonmatch' to a sample location after a delay. In both the LD and …
Retail Visual Assistant Digital Artefact, Neville Knott
Retail Visual Assistant Digital Artefact, Neville Knott
Dissertations
Window display, store layout and visual merchandising are defined as the ability to attract and sell to the consumer silently. One of the biggest challenges facing small retail businesses in towns and villages around the globe is how to compete against large multinationals in the visual layout and presentation of their merchandise and shops. One of the key advantages that large retail units have over small ones is professionally merchandised stock incorporated into a strategic spatial layout. The cost of employing a full- or part-time design expert within the field of visual merchandising is not viable for smaller shops, resulting …
Hyper-Arousal Decreases Human Visual Thresholds, Adam J. Woods, John W. Philbeck, Philip W. Wirtz
Hyper-Arousal Decreases Human Visual Thresholds, Adam J. Woods, John W. Philbeck, Philip W. Wirtz
Faculty of Social Sciences - Papers (Archive)
Arousal has long been known to influence behavior and serves as an underlying component of cognition and consciousness. However, the consequences of hyper-arousal for visual perception remain unclear. The present study evaluates the impact of hyper-arousal on two aspects of visual sensitivity: visual stereoacuity and contrast thresholds. Sixty-eight participants participated in two experiments. Thirty-four participants were randomly divided into two groups in each experiment: Arousal Stimulation or Sham Control. The Arousal Stimulation group underwent a 50-second cold pressor stimulation (immersing the foot in 0–2° C water), a technique known to increase arousal. In contrast, the Sham Control group immersed their …
Measuring The Spatiotemporal Profiles Of Neuronal Activity And Bold In Early Visual Cortex Using High Resolution Fmri, Mark M. Schira, Michael Breakspear, K M. Aquino
Measuring The Spatiotemporal Profiles Of Neuronal Activity And Bold In Early Visual Cortex Using High Resolution Fmri, Mark M. Schira, Michael Breakspear, K M. Aquino
Faculty of Social Sciences - Papers (Archive)
Abstract presented at the Australian Neuroscience Society Inc 33rd Annual Meeting, 3-6 Feb 2013, Melbourne, Australia
An Eye Opening Experience: A Critical Turning Point In The Life Of A Young Woman With A Severe Visual Impairment, Nikki Wedgwood, Louisa Smith, Gwynnyth M. Llewellyn, Russell Shuttleworth
An Eye Opening Experience: A Critical Turning Point In The Life Of A Young Woman With A Severe Visual Impairment, Nikki Wedgwood, Louisa Smith, Gwynnyth M. Llewellyn, Russell Shuttleworth
Australian Health Services Research Institute
Research on social inclusion often focuses on social exclusion. However, in order to gain greater insights into ways to facilitate social change, it is equally important to research the social inclusion of those normally excluded. Indeed, while one important purpose of studying disabilism is to catalogue and critique all its forms, another critical purpose is to better understand how disabilism can be resisted and/or ameliorated at individual and/or societal levels. Thus, it is equally important to understand when, why and how disabilism does not negatively impact the lives of people with impairments as well as when it does. This paper …
The Joint Effect Of Image Blur And Illumination Distortions For Mobile Visual Search Of Print Media, Yi Cao, Christian Ritz, Raad Raad
The Joint Effect Of Image Blur And Illumination Distortions For Mobile Visual Search Of Print Media, Yi Cao, Christian Ritz, Raad Raad
Faculty of Engineering and Information Sciences - Papers: Part A
Mobile Visual Search (MVS) is an emerging area of research given the explosion of smart and powerful mobile devices. Typically, the performance of MVS applications is influenced by the implemented image processing algorithms as well as various distortions that occur when capturing images by the mobile camera. This paper examines the joint effect of two common distortions, namely the illumination changes and image blurring on image matching accuracy for print media when using four state-of-the art local feature algorithms. Results obtained for a database of real camera images captured by two different camera models show that the illumination changes have …
Acute Alcohol Consumption Impairs Controlled But Not Automatic Processes In A Psychophysical Pointing Paradigm., Kevin Johnston, Brian Timney, Melvyn A Goodale
Acute Alcohol Consumption Impairs Controlled But Not Automatic Processes In A Psychophysical Pointing Paradigm., Kevin Johnston, Brian Timney, Melvyn A Goodale
Brain and Mind Institute Researchers' Publications
Numerous studies have investigated the effects of alcohol consumption on controlled and automatic cognitive processes. Such studies have shown that alcohol impairs performance on tasks requiring conscious, intentional control, while leaving automatic performance relatively intact. Here, we sought to extend these findings to aspects of visuomotor control by investigating the effects of alcohol in a visuomotor pointing paradigm that allowed us to separate the influence of controlled and automatic processes. Six male participants were assigned to an experimental "correction" condition in which they were instructed to point at a visual target as quickly and accurately as possible. On a small …
A Scalable Unsupervised Feature Merging Approach To Efficient Dimensionality Reduction Of High-Dimensional Visual Data, Lingqiao Liu, Lei Wang
A Scalable Unsupervised Feature Merging Approach To Efficient Dimensionality Reduction Of High-Dimensional Visual Data, Lingqiao Liu, Lei Wang
Faculty of Engineering and Information Sciences - Papers: Part A
To achieve a good trade-off between recognition accuracy and computational efficiency, it is often needed to reduce high-dimensional visual data to medium-dimensional ones. For this task, even applying a simple full-matrix-based linear projection causes significant computation and memory use. When the number of visual data is large, how to efficiently learn such a projection could even become a problem. The recent feature merging approach offers an efficient way to reduce the dimensionality, which only requires a single scan of features to perform reduction. However, existing merging algorithms do not scale well with high-dimensional data, especially in the unsupervised case. To …
De Hogwarts A Warner: La Jurisprudencia Visual De Harry Potter Y Los Derechos Humanos, Luis Gomez Romero
De Hogwarts A Warner: La Jurisprudencia Visual De Harry Potter Y Los Derechos Humanos, Luis Gomez Romero
Faculty of Law, Humanities and the Arts - Papers (Archive)
Cada época se define por sus prácticas de saber y estrategias de poder, mismas que se componen por distintos regímenes de visibilidad y procedimientos de expresión. La vista juega un papel fundamental en la construcción de los paradigmas éticos, políticos y jurídicos vigentes en un momento histórico determinado. Aristóteles apunta en De Anima que el alma humana jamás piensa al margen de las imágenes. La conexión entre imagen y pensamiento establecida por Aristóteles ha subsistido en una buena parte de las modernas lenguas occidentales –cuando menos, en alemán, castellano, francés, inglés e italiano- a través de la palabra idea que, …
Flash Illusions Induced By Visual, Auditory, And Audiovisual Stimuli, Deborah Apthorp, David Alais, Lars T. Boenke
Flash Illusions Induced By Visual, Auditory, And Audiovisual Stimuli, Deborah Apthorp, David Alais, Lars T. Boenke
Faculty of Social Sciences - Papers (Archive)
When two objects are flashed at one location in close temporal proximity in the visual periphery, an intriguing illusion occurs whereby a single flash presented concurrently at another location appears to flash twice (the visual double-flash illusion: Chatterjee et al., 2011, Wilson & Singer, 1981). Here, for the first time, we investigate the time course of the effect, and directly compare it to the time course of the auditory (sound-induced flash illusion) effect, for both fission (single test flash, double inducer) and fusion (double test flash, single inducer) conditions, across stimulus onset asynchronies (SOAs) of 30 to 250 ms. In …