Life Sciences Commons^™

‘Edge’ Integration Explains Contrast And Assimilation In A Gradient Lightness Illusion, Michael E. Rudd

MODVIS Workshop

In the ‘phantom’ illusion (Galmonte, Soranzo, Rudd, & Agostini, submitted), either an incremental or a decremental target, when surrounded by a luminance gradient, can to be made to appear as an increment or a decrement, depending on the gradient width. For wide gradients, incremental targets appear as increments and decremental targets appear as decrements. For narrow gradients, the reverse is true. Here, I model these phenomena with a two-stage neural lightness theory (Rudd, 2013, 2014) in which local steps in log luminance are first encoded by oriented spatial filters operating on a log-transformed version of the image; then the filter …

The Bounded Log-Odds Model Of Frequency And Probability Distortion, Hang Zhang, Laurence T. Maloney

MODVIS Workshop

No abstract provided.

A Conceptual Framework Of Computations In Mid-Level Vision, Jonas Kubilius, Johan Wagemans, Hans P. Op De Beeck

MODVIS Workshop

The goal of visual processing is to extract information necessary for a variety of tasks, such as grasping objects, navigating in scenes, and recognizing them. While ultimately these tasks might be carried out by separate processing pathways, they nonetheless share a common root in the early and intermediate visual areas. What representations should these areas develop in order to facilitate all of these higher-level tasks? Several distinct ideas have received empirical support in the literature so far: (i) boundary feature detection, such as edge, corner, and curved segment extraction; (ii) second-order feature detection, such as the difference in orientation or …

Binocular 3d Motion Perception As Bayesian Inference, Martin Lages, Suzanne Heron

MODVIS Workshop

The human visual system encodes monocular motion and binocular disparity input before it is integrated into a single 3D percept. Here we propose a geometric-statistical model of human 3D motion perception that solves the aperture problem in 3D by assuming that (i) velocity constraints arise from inverse projection of local 2D velocity constraints in a binocular viewing geometry, (ii) noise from monocular motion and binocular disparity processing is independent, and (iii) slower motions are more likely to occur than faster ones. In two experiments we found that instantiation of this Bayesian model can explain perceived 3D line motion direction under …

Object Recognition And Visual Search With A Physiologically Grounded Model Of Visual Attention, Frederik Beuth, Fred H. Hamker

MODVIS Workshop

Visual attention models can explain a rich set of physiological data (Reynolds & Heeger, 2009, Neuron), but can rarely link these findings to real-world tasks. Here, we would like to narrow this gap with a novel, physiologically grounded model of visual attention by demonstrating its objects recognition abilities in noisy scenes.

To base the model on physiological data, we used a recently developed microcircuit model of visual attention (Beuth & Hamker, in revision, Vision Res) which explains a large set of attention experiments, e.g. biased competition, modulation of contrast response functions, tuning curves, and surround suppression. Objects are represented by …

Cerebellar Hypoconnectivity In Schizophrenia, Haleemah Harris

Georgia State Undergraduate Research Conference

No abstract provided.

Altering Working Memory Performance Through Cortical Entrainment: An Erp Study Of Binaural Beat Stimulation During A Two-Back Memory Task, Nicholas P. Bello

Georgia State Undergraduate Research Conference

No abstract provided.

Meta-Analysis Of Event-Related Potentials In Episodic And Semantic Memory, Stephanie Ross

Georgia State Undergraduate Research Conference

No abstract provided.

Effects Of Meaningfulness In Left Angular Gyrus And Right Insula, Anna Nowaczyk

Georgia State Undergraduate Research Conference

No abstract provided.

Psychological Readiness Effect On Return-To-Play In Collegiate Athletes, Kurt Gruenberg, Kurt D. Beachy

The Research and Scholarship Symposium (2013-2019)

Psychological readiness has been studied extensively over the past 20 years.2,4,6 It is becoming increasingly important to understand completely how athletes psychologically deal with a physical injury. Current research has identified specific intrinsic and extrinsic factors that have shown to present negative effects on athletes.1,4,5 They have also identified specific psychological factors that play a major role in the rehabilitation process.2,3,5 However, current research has not studied the entire psychological experience of athletes and their determining factors. They also have not used surveys that allow for both qualitative and quantitative data to be collected. Therefore, the purpose of this study …

2015 Oklahoma Research Day Full Program, Northeastern State University

Oklahoma Research Day Abstracts

This document contains all abstracts from the 2015 Oklahoma Research Day held at Northeastern State University.