Cognitive Science Commons^™

Theta Activity During Navigation In Virtual Environments, Colleen Margaret Moore

Psychology Theses & Dissertations

Human navigation has gone through many different stages, from guidance by stars to guidance by technology. Theories for performance differences range from differences between individuals, to experience with the environment. Researchers turn to virtual environments during experimentation which are easy to manipulate and easier to measure during navigation. However, fidelity is an issue with regard to transfer of learning to a real world environment. We examined differences in theta activity during navigation in low and high fidelity virtual environments. The researchers recruited thirty-two students between the ages of 18-40 from the university subject pool for voluntary participation. We measured EEG …

Distributed Artificial Neural Network (Dann): Model Of Human Memory Behavior, Karen Meriweather

All-Inclusive List of Electronic Theses and Dissertations

It is believed that a distributed network system will provide a general means of understanding cognitive functions that occur in the brain. This study provides a framework for modeling human memory behavior using a Distributed Artificial Neural Network (DANN) architecture. This approach presents a different method for modeling cognitive functions using peer-to-peer computing. The computers on the network represents different memory stores, and by using Hopfield Neural Network Techniques, along with the software application Joone, the final product is a DANN system that exhibits human memory behavior and the ability to associate input vectors from the Fisher's Iris Classification output …

Attentional Processing In Parkinson's Disease: Hyperkinetic And Akinetic Type, Christine Diane Kraus

Loma Linda University Electronic Theses, Dissertations & Projects

Parkinson's disease (P.D.) has long been thought of as a single disorder. Recent research involving neurochemistry, neurophysiology, and detailed analysis of symptoms, have created a basis for questioning the concept that P.D. is a singular disorder. Literature suggests there may be two primary subtypes (with the possibility of others). The two probable subtypes are hyperkinetic, in which tremor is the predominate symptom and akinetic, in which, gait freezing and postural instability predominate.

In both of these pathological manifestations, several investigators have noted cognitive deficits including attention. The differences in symptomotology and neuropathology attributed to these probable subtypes suggest that there …

Figure, Mark Bernard Turner

Faculty Scholarship

This chapter reviews the origins of construction grammar, beginning with classical antiquity; analyzes the nature of figure in thought and multimodal communication; and provides an anchor for studies of figure in the basic mental operation of conceptual blending.

Blending As A Central Process Of Grammar, Mark Bernard Turner

Faculty Scholarship

Constructions are long-term memory associations of form and meaning. How are they formed and learned, how do they change, and how do they combine into new utterances (constructs, communicative performances) in working memory? This chapter analyzes the role and process of conceptual integration (blending) in the creation and use of constructions.

Linda Jacobson Interview Virtual Reality Evangelist, Loretta L. Lange

SWITCH

In the interview with Linda Jacobson, a Virtual Reality (VR) artist, Jacobson discusses the current and future state of VR technology’s role in the politics of the body, social identity, self, gender, class, and race. This article discusses the fact that barriers to access exist for a more diverse set of artists across race, class, and gender to engage with VR technology and the need to evolve the development platform, so artists can implement their ideas in a low-cost way. The author discusses Jaron Lanier’s ideas about using VR to explore other identities based on a theatrical model where the …

Default Probability, Daniel N. Osherson, Joshua Stern, Ormond Wilkie, Michael Stob

University Faculty Publications and Creative Works

A probability may be called "default" if it is neither derived from preestablished probabilities nor based on considerations of frequency or symmetry. Default probabilities presumably arise through reasoning based on causality and similarity. This article advances a model of default probability based on a featural approach to similarity. The accuracy of the model is assessed by comparing its predictions to the probabilities provided by undergraduates asked to reason about mammals.

Death Is The Mother Of Beauty: Mind, Metaphor, Criticism, Mark Bernard Turner

Faculty Scholarship

No abstract provided.

Michael D. Lieber's Review Of Edwin Hutchins' Culture And Inference. Cognitive Science Series, 2, Michael D. Lieber

Pacific Studies

No abstract provided.

Ideal Learning Machines, Daniel N. Osherson, Michael Stob, Scott Weinstein

University Faculty Publications and Creative Works

We examine the prospects for finding "best possible" or "ideal" computing machines for various learning tasks. For this purpose, several precise senses of "ideal machine" are considered within the context of formal learning theory. Generally negative results are provided concerning the existence of ideal learning-machines in the senses considered.

The Influence Of Age And Stimuli On The Explanations Of "Same" And "Different" By Young Children, Pamela Callas Senders

Dissertations and Theses

This study investigated the influence of chronological age and stimuli on the explanations of "same" and "different" by young children. Seventy children, between by young children. the ages of three-years, six-months and nine-years, six-months, selected on the basis of chronological age, normal speech and language development, and normal verbal maturity, were involved as subjects. A test consisting of a series of verbal tasks was administered to each child. The experimenter recorded and later analyzed and classified all responses for each child, following specific guidelines for judging appropriateness of response and assigning each appropriate response to one of three classifications.