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Is The Selective Tuning Model Of Visual Attention Still Relevant?, John K. Tsotsos 2019 York University

Is The Selective Tuning Model Of Visual Attention Still Relevant?, John K. Tsotsos

MODVIS Workshop

No abstract provided.


Functional Organization Of Cortical Maps For Ocular Dominance And Light-Dark Polarity In Primary Visual Cortex, sohrab najafian, Jian Zhong Jin, Jose-Manuel Alonso 2019 SUNY College of Optometry

Functional Organization Of Cortical Maps For Ocular Dominance And Light-Dark Polarity In Primary Visual Cortex, Sohrab Najafian, Jian Zhong Jin, Jose-Manuel Alonso

MODVIS Workshop

No abstract provided.


An Observational Study With The Janssen Autism Knowledge Engine (Jake((R))) In Individuals With Autism Spectrum Disorder, Seth L. Ness, Jean A. Frazier 2019 Janssen Research & Development

An Observational Study With The Janssen Autism Knowledge Engine (Jake((R))) In Individuals With Autism Spectrum Disorder, Seth L. Ness, Jean A. Frazier

Jean A. Frazier

Objective: The Janssen Autism Knowledge Engine (JAKE(R)) is a clinical research outcomes assessment system developed to more sensitively measure treatment outcomes and identify subpopulations in autism spectrum disorder (ASD). Here we describe JAKE and present results from its digital phenotyping (My JAKE) and biosensor (JAKE Sense) components.

Methods: An observational, non-interventional, prospective study of JAKE in children and adults with ASD was conducted at nine sites in the United States. Feedback on JAKE usability was obtained from caregivers. JAKE Sense included electroencephalography, eye tracking, electrocardiography, electrodermal activity, facial affect analysis, and actigraphy. Caregivers of individuals with ASD reported behaviors ...


Computations Of Top-Down Attention By Modulating V1 Dynamics, David Berga, Xavier Otazu 2019 Computer Vision Center, Autonomous University of Barcelona

Computations Of Top-Down Attention By Modulating V1 Dynamics, David Berga, Xavier Otazu

MODVIS Workshop

The human visual system processes information defining what is visually conspicuous (saliency) to our perception, guiding eye movements towards certain objects depending on scene context and its feature characteristics. However, attention has been known to be biased by top-down influences (relevance), which define voluntary eye movements driven by goal-directed behavior and memory. We propose a unified model of the visual cortex able to predict, among other effects, top-down visual attention and saccadic eye movements. First, we simulate activations of early mechanisms of the visual system (RGC/LGN), by processing distinct image chromatic opponencies with Gabor-like filters. Second, we use a ...


Differentiating Changes In Population Encoding Models With Psychophysics And Neuroimaging, Jason Hays, Fabian Soto PhD 2019 Florida International University

Differentiating Changes In Population Encoding Models With Psychophysics And Neuroimaging, Jason Hays, Fabian Soto Phd

MODVIS Workshop

It is now common among visual scientists to make inferences about neural population coding of stimuli from indirect measures such as those provided by neuroimaging and psychophysics. The success of such studies depends strongly on simulation work using standard population encoding models extended with decoders (in psychophysics) and measurement models (in neuroimaging). However, not all studies are accompanied by simulation work, and those that are tend to vary widely in their assumptions about encoding, decoding, and measurement. To solve these issues, we designed a Python package (PEMGUIN) to assist computational modelling by providing simple ways to manage encoders' tuning functions ...


Bifurcation Analysis Of A Photoreceptor Interaction Model For Retinitis Pigmentosa, Anca R. Radulescu 2019 State University of New York at New Paltz

Bifurcation Analysis Of A Photoreceptor Interaction Model For Retinitis Pigmentosa, Anca R. Radulescu

Biology and Medicine Through Mathematics Conference

No abstract provided.


Spiking Activity In Networks Of Neurons Impacted By Axonal Swelling, Brian Frost, Stan Mintchev 2019 Cooper Union for the Advancement of Science and Art

Spiking Activity In Networks Of Neurons Impacted By Axonal Swelling, Brian Frost, Stan Mintchev

Biology and Medicine Through Mathematics Conference

No abstract provided.


Virtual Eye: A Spatial-Temporal Bottom-Up Eye Sensitivity Model, Todd Goodall 2019 Purdue University

Virtual Eye: A Spatial-Temporal Bottom-Up Eye Sensitivity Model, Todd Goodall

MODVIS Workshop

Video quality and compression models use the

spatial contrast sensitivity function (CSF), which is solved

based on a linear system approximation. This function measures

the eye’s sensitivity to sinusoid gratings, ignoring the subtle

connectivity and inhomogeniety of cell density across the

visual field. Non-linear aspects of the eye, such as the change

in frequency sensitivity with changing illumination, are not

captured by this simple approximation. We propose Virtual

Eye, a bottom-up approach that models the spatio-temporal

dynamics of the eye across the visual field. Each functional

retinal cell layer in the eye is modeled using non-uniform spatial

cell responses ...


Predicting Dynamics From Hardwiring In Canonical Low-Dimensional Coupled Networks, Anca R. Radulescu 2019 State University of New York at New Paltz

Predicting Dynamics From Hardwiring In Canonical Low-Dimensional Coupled Networks, Anca R. Radulescu

Biology and Medicine Through Mathematics Conference

No abstract provided.


Variance Partitioning Reveals Consistent Representation Of Object Boundary Contours In Lo Across Different Datasets, Mark D. Lescroart, Utkarsh Singhal 2019 University of Nevada, Reno

Variance Partitioning Reveals Consistent Representation Of Object Boundary Contours In Lo Across Different Datasets, Mark D. Lescroart, Utkarsh Singhal

MODVIS Workshop

No abstract provided.


The Challenge For Vision Of Fluctuating Real-World Illumination, David H. Foster 2019 University of Manchester

The Challenge For Vision Of Fluctuating Real-World Illumination, David H. Foster

MODVIS Workshop

No abstract provided.


Its Skin Is My Skin, Bryan Page 2019 Washington University in St. Louis

Its Skin Is My Skin, Bryan Page

Graduate School of Art Theses

This text examines the complexity of attempting to empathize with bodies that are vastly othered from my own. This broad yet nuanced subject crosses epistemological boundaries and complicates the dualities between both the mind and body, and between the corporeal and the virtual. My desire to better understand the conditions of another’s experience originates from a painful traumatic loss which caused me to feel isolated and incomplete. In response to this suffering, I long to emotionally connect with other beings and create artwork that attempts to bridge the qualia of individual experience.

I am interested in the capacity (or ...


Gene Therapy For Amyotrophic Lateral Sclerosis: An Aav Mediated Rnai Approach For Autosomal Dominant C9orf72 Associated Als, Gabriela Toro 2019 University of Massachusetts Medical School

Gene Therapy For Amyotrophic Lateral Sclerosis: An Aav Mediated Rnai Approach For Autosomal Dominant C9orf72 Associated Als, Gabriela Toro

Gabriela Toro

Amyotrophic lateral sclerosis (ALS) is a terminal neurodegenerative disease that affects motor neurons causing progressive muscle weakness and respiratory failure. In 2011, the presence of a hexanucleotide repeat expansion within chromosome 9 open reading frame 72(C9ORF72) was identified in ALS patient samples, becoming the major known genetic cause for ALS and frontotemporal dementia (FTD). Carriers of this mutation present reduced levels of C9ORF72 mRNA, RNA foci produced by the aggregating expansion and toxic dipeptides generated through repeat-associated non-ATG translation. These findings have led to multiple hypotheses on the pathogenesis of C9ORF72: 1) Haploinsufficiency, 2) RNA gain-of-function, 3) RAN Translation ...


Feedforward And Feedback Signals In The Olfactory System, Srimoy Chakraborty 2019 University of Arkansas, Fayetteville

Feedforward And Feedback Signals In The Olfactory System, Srimoy Chakraborty

Theses and Dissertations

The conglomeration of myriad activities in neural systems often results in prominent oscillations. The primary goal of the research presented in this thesis was to study effects of sensory stimulus on the olfactory system of rats, focusing on the olfactory bulb (OB) and the anterior piriform cortex (aPC). Extracellular electrophysiological measurements revealed distinct frequency bands of oscillations in OB and aPC. However, how these oscillatory fluctuations help the animal to process sensory input is not clearly understood. Here we show high frequency oscillations in olfactory bulb carry feedforward signals to anterior piriform cortex whereas feedback from the aPC is predominantly ...


Electrophysiological Correlates Of Visual Object Category Formation In A Prototype-Distortion Task, Stephanie Marie Long 2019 University of Arkansas, Fayetteville

Electrophysiological Correlates Of Visual Object Category Formation In A Prototype-Distortion Task, Stephanie Marie Long

Theses and Dissertations

In perceptual learning studies, participants engage in extensive training in the discrimination of visual stimuli in order to modulate perceptual performance. Much of the literature in perceptual learning has looked at the induction of the reorganization of low-level representations in V1. However, much remains to be understood about the mechanisms behind how the adult brain (an expert in visual object categorization) extracts high-level visual objects from the environment and categorically represents them in the cortical visual hierarchy. Here, I used event-related potentials (ERPs) to investigate the neural mechanisms involved in object representation formation during a hybrid visual search and prototype ...


Human Anatomy And Physiology I: Course Map With Expected Learning Outcomes, Carlos Liachovitzky 2019 CUNY Bronx Community College

Human Anatomy And Physiology I: Course Map With Expected Learning Outcomes, Carlos Liachovitzky

Open Educational Resources

This document contains a list with all the Anatomy and Physiology I expected learning outcomes organized by topics, and grouped into ten units: 1. Introduction to A&P: body plan & organization; 2. Introduction to A&P: homeostasis; 3. The chemical level of organization; 4. Levels of organization: the cellular level of organization; 5. Levels of organization: the tissue level of organization; 6. Support and movement: integumentary system; 7. Support and movement: skeletal system & articulations; 8. Support and movement: muscular system; 9. Regulation, integration, and control: nervous system; 10. Regulation, integration, and control: special senses

Each learning outcome is referred to a section in the textbook “Anatomy and ...


Pilot Study Of Empathy In Bilingual Adults, Libby Moberg 2019 University of Nebraska at Omaha

Pilot Study Of Empathy In Bilingual Adults, Libby Moberg

Theses/Capstones/Creative Projects

Empathy is of critical public health importance due to its association with relationship satisfaction and well-being (Davis & Oathout, 1987; Davis, 1983). There is growing evidence that bilingual individuals may have higher levels of empathy (Javor, 2016). One potential mechanism for this relationship is that bilingual individuals tend to have higher levels of executive functioning (Costa et al, 2008), which is linked to higher empathy because individuals are able to more easily adopt others’ perspectives. Previous studies examining this question have largely relied on self-report questionnaires assessing empathy as a general tendency (i.e., trait). No studies have examined differences in the empathic ...


The Impact Of Race And Affect On Infant Visual Attention To Faces, Emily Kathryn Grimes 2019 University of Tennessee, Knoxville

The Impact Of Race And Affect On Infant Visual Attention To Faces, Emily Kathryn Grimes

Chancellor’s Honors Program Projects

No abstract provided.


Interhemispheric Communication And Lateralization In The Mouse Hippocampus, Jake Jordan 2019 The Graduate Center, City University of New York

Interhemispheric Communication And Lateralization In The Mouse Hippocampus, Jake Jordan

All Dissertations, Theses, and Capstone Projects

The hippocampus is essential for memory and spatial navigation. Many theories have been proposed to explain how the hippocampus contributes to cognition; however, none has fully explained relevant neurophysiological and behavioral data. Hemispheric lateralization of hippocampal function has been reported in humans and in rodents, and lateralization of hippocampal neural circuitry has been reported in rodents. Most theories of hippocampal function fail to consider the hippocampus as a bilateral structure with hemispheric differences. Further, proposed theories of hippocampal lateralization have their own limitations in explaining empirical data concerning left/right function. Little is known about communication between the hippocampi across ...


Context-Specific Effects Of Vasotocin On Social Approach In The Male Common Goldfish, Carassius Auratus, Katharine Torrey 2019 Bowdoin College

Context-Specific Effects Of Vasotocin On Social Approach In The Male Common Goldfish, Carassius Auratus, Katharine Torrey

Honors Projects

The peptide vasotocin (VT) and its mammalian homologue, vasopressin (VP), produce effects on social behavior that are highly species- and context-specific. We recently sequenced two genes for V1a-like receptors (VTR) in the goldfish brain, one that encodes for a fully-functioning canonical receptor and one that encodes for a non-functional truncated receptor. The current study is an investigation of whether social context may alter expression of these receptor types and thus, potentially, behavioral responses to VT. We used western blotting and immunohistochemistry with custom anti-VTR antibodies to characterize the distribution of VTR throughout the forebrain and the hindbrain. Western blot results ...


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