Cognition and Perception Commons^™

The Channel Capacity Of Visual Awareness, Joe Lappin

MODVIS Workshop

No abstract provided.

A Contrast-Based Model Of Achromatic Transparency, Marianne Maertens, Minjung Kim, Guillermo Aguilar

MODVIS Workshop

No abstract provided.

Modeling Neural Computations In Lgn And Visual Cortex That Underlie Contextual Modulation Of Lightness And Darkness Magnitudes In Simple And Complex Images, Michael E. Rudd

MODVIS Workshop

No abstract provided.

Measuring Symmetry In Real-World Scenes Using Derivatives Of The Medial Axis Radius Function, Morteza Rezanejad, John D. Wilder, Kaleem Siddiqi, Sven Dickinson, Allan Jepson, Dirk B. Walther

MODVIS Workshop

Symmetry has been shown to be an important principle that guides the grouping of scene information. Previously, we have described a method for measuring the local, ribbon symmetry content of line-drawings of real-world scenes (Rezanejad, et al., MODVIS 2017), and we demonstrated that this information has important behavioral consequences (Wilder, et al., MODIVS 2017). Here, we describe a continuous, local version of the symmetry measure, that allows for both ribbon and taper symmetry to be captured. Our original method looked at the difference in the radius between successive maximal discs along a symmetric axis. The number of radii differences in …

El Impacto De Las Artes Visuales En Personas Afectadas Por Cáncer, Bettina Ingham

ICOT 18 - International Conference on Thinking - Cultivating Mindsets for Global Citizens

El impacto de las artes visuales en el bienestar y la mejora de la calidad de vida de personas afectadas por cáncer.

Un programa diseñado para poner en práctica e investigar el alcance que tienen las artes visuales y el método de Estrategias de Pensamiento Visual para el desarrollo de habilidades de pensamiento que promueven la identificación y expresión verbal de las emociones, minimizando, en el caso de las personas convalecientes, el sufrimiento que va desde el dolor de la enfermedad hasta el miedo a la muerte.

Los efectos que la contemplación (percepción estética), el análisis y la práctica(proceso creativo) …

Use Of Local Image Information In Depth Edge Classification By Humans And Neural Networks, Krista A. Ehinger, Wendy J. Adams, Erich W. Graf, James H. Elder

MODVIS Workshop

Humans can use local cues to distinguish image edges caused by a depth change from other types of edges (Vilankar et al., 2014). But which local cues? Here we use the SYNS database (Adams et al., 2016) to automatically label edges in images of natural scenes as depth or non-depth. We use this ground truth to identify the cues used by human observers and convolutional neural networks (CNNs) for edge classification. Eight observers viewed square image patches, each centered on an image edge, ranging in width from 0.6 to 2.4 degrees (8 to 32 pixels). Human judgments (depth/non-depth) were compared …

A Feature-Based Model Of Visually Perceiving Deformable Objects, Vivian C. Paulun, Filipp Schmidt, Roland W. Fleming

MODVIS Workshop

No abstract provided.

Global Estimation Of Signed 3d Surface Tilt From Natural Images, Seha Kim, Johannes Burge

MODVIS Workshop

The ability of human visual systems to estimate 3D surface orientation from 2D retinal images is critical. But the computation to calculate 3D orientation in real-world scenes is not fully understood. A Bayes optimal model grounded in natural statistics has explained 3D surface tilt estimation of human observers in natural scenes (Kim and Burge, 2018). However, the model is limited because it estimates only unsigned tilt (tilt modulo 180deg). We extend the model to predict signed tilt estimates and compared with human signed estimates. The model takes image pixels as input and produces optimal estimates of tilt as output, using …

Perspective Geometry Explains Perceived 3d Object Poses In Real Scenes And Pictures, Erin M. Koch, Famya Baig, Qasim Zaidi

MODVIS Workshop

No abstract provided.

Inferring The Neural Representation Of Faces From Adaptation Aftereffects, Kara J. Emery, Michael A. Webster Ph.D.

MODVIS Workshop

The aftereffects of adaptation to faces have been studied widely, in part to characterize the coding schemes for representing different facial attributes. Often these aftereffects have been interpreted in terms of two alternative models of face processing: 1) a norm-based or opponent code, in which the facial dimension is represented by relative activity in a pair of broadly-tuned mechanisms with opposing sensitivities; or 2) an exemplar code, in which the dimension is sampled by multiple channels narrowly-tuned to different levels of the stimulus. Evidence for or against these alternatives is based on the different patterns of aftereffects they predict (e.g. …

Effect Of Noise On Mutually Inhibiting Pyramidal Cells In Visual Cortex: Foundation Of Stochasticity In Bi-Stable Perception, Naoki Kogo, Felix Kern, Thomas Nowotny, Raymond Van Ee, Richard Van Wezel, Takeshi Aihara

MODVIS Workshop

Bi-stable perception has been an important tool to investigate how visual input is interpreted and how it reaches consciousness. To explain the mechanisms of this phenomenon, it has been assumed that a mutual inhibition circuit plays a key role. It is possible that this circuit functions to resolve ambiguity of input image by quickly shifting the balance of competing signals in response to conflicting features. Recently we established an in vitro neural recording system combined with computerized connections mediated by model neurons and synapses (“dynamic clamp” system). With this system, mutual inhibition circuit between two pyramidal cells from primary visual …

Divisive Inhibition As A Solution To The Correspondence Problem In Perceptual Grouping, Chien-Chung Chen, Yi-Shiuan Lin, Li Lin

MODVIS Workshop

No abstract provided.

Predicting The Fixation Density Over Time, Heiko H. Schütt, Lars O. M. Rothkegel, Hans A. Trukenbrod, Ralf Engbert, Felix A. Wichmann

MODVIS Workshop

No abstract provided.

The Effects Of One Neurofeedback Session On Eye-Tracking Distractibility When Completing Verbal And Visuospatial Search Tasks, Rebecca C. Recio-Swift

Electronic Theses and Dissertations

Attention Deficit Hyperactivity Disorder (ADHD) is a common and prevalent condition seen in all ages and throughout the world. School-aged and college-aged students seem to have the most difficulty in terms of academic performance, social functioning, and adaptive functioning. Visual attention and visual search are important aspects of attention. Visual attention drives what and how the brain processes and interprets information from the environment. Visual search is the ability to find a visual target within a set of distractors. Electroencephalography (EEG) Neurofeedback is the process of re-training brainwaves through operant conditioning. Neurofeedback (NF) has been suggested to be a non-invasive …

Effects Of One Neurofeedback Session On Relationship Between Fear-Of-Pain And Visual Avoidance Of Pain, Timothy Swift

Electronic Theses and Dissertations

Chronic pain is increasingly prevalent and costly and will continue to be with the increasing mean age of America’s population. It is important to identify interventions addressing pain-related biopsychosocial aspects. The purpose of the current study was to examine if a single session of specific neurofeedback (NF) protocols had an effect on subjective fear and physiological fear-avoidance behaviors in relation to pain-related stimuli. Correlational analyses revealed that FPQ-III minor pain scores were negatively associated with total fixation duration while looking at pain-related pictures. One-way ANOVAs revealed differences approaching significance for those trained on Left-Hemisphere NF protocols compared to those in …

Habit Formation In Active Avoidance, Kelsey J. Burke

Theses and Dissertations

Two studies explored feedback value in avoidance learning using rats. We show that limited, but not extended trained rats were sensitive to feedback devaluation via counterconditioning. Identical effects on motivational transfer were obtained. These results suggest that maladaptive avoidance may be established in a similar way to habits of consumption.

The Effect Of The Similarity Of Events On Change Deafness, Caroline Cole

Senior Honors Projects, 2010-2019

Change deafness is a perceptual phenomenon that occurs when an observer fails to rapidly detect an above-threshold change in a sound source. The present research represented an initial investigation into one stimulus factor, the perceived similarity between array events, that potentially gives rise to change deafness to continuously moving target events. Participants (N=13) were presented with arrays of three simultaneous tones of inharmonic, synthetic /a/ and /i/ vowels. Each array event had a distinct pitch [low (A₂), middle (D^#₃), high (B₄)] and starting location in perceived space on the azimuth (-40°, …

The Effects Of Speaking Rate Manipulations On The Perception Of Voicing Contrasts, Sarah M. Howell

Senior Honors Projects, 2010-2019

Phoneme-level research involving speaking rate has typically relied on a single method of synthetically manipulating rate of speech by compressing the vowel portion of a syllable. This does not mimic what occurs during natural speech production, and therefore could be influencing the perception of voicing contrasts. An experiment was conducted to address this problem by constructing a continuum of voice onset times for the velar place of articulation and then subsequently altering the rate of speech using three methods of manipulation: compressing the vowel, compressing the consonant and vowel proportionate to what occurs naturally, and compressing the total duration of …

A Study Of Self-Disclosure And Awareness, Ryan Coleman

Undergraduate Theses

This study was an attempt to replicate the findings of a 2013 experiment that found self-disclosure can be influenced through priming (Grecco, Robbins, Bartoli & Wolff). The study also concluded that their participants were unaware of the priming effects the experiment had on them. This study challenged this conclusion by manipulating depth of processing across priming conditions as a way of assessing conscious processing of the primes. The priming influence on self-disclosure was not replicated in the present study. Additionally, this study was unable to find a significant main effect of depth. A significant result was found in a memory …

Hell On Earth: An Exploration Into What Drives Evil, Samuel Taylor Hogan

Educational Specialist, 2009-2019

Evil abounds. Even the most cursory glance at the news yields harsh headlines about bombings, school shootings, acid attacks, murder, rape, sex slavery, torture, and the occasional mass genocide. The 20th century alone featured roughly 135 million military and civilian deaths due to war and democide (White & Pinker, 2013). Recently, a cultural narrative has emerged proselytizing that evil is an aberrant, caustic mutation of the otherwise unsullied human soul. Philosophers and sociologists, among others, contend that “civilization needs to believe that it does not have an inhumane or barbaric side, leading members of the mainstream to constantly project unacceptable …