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Articles 1 - 5 of 5
Full-Text Articles in Psychology
Relations Among Type 2 Diabetes, Arterial Stiffness And Cognitive Functioning, Gregory A. Dore
Relations Among Type 2 Diabetes, Arterial Stiffness And Cognitive Functioning, Gregory A. Dore
Electronic Theses and Dissertations
Although the associations among diabetes mellitus, cognitive functioning and arterial stiffness have been explored previously, the degree to which arterial stiffness is responsible for the association between diabetes and cognitive function has not been examined. The primary aim of the current investigations is to examine the extent to which arterial stiffness mediates the association between diabetes and cognitive function, as well as the extent to which this indirect effect is modified by age and APOE genotype. The sample included 590 participants (age 23-94, 62% women, 12% African- American) from the seventh wave of the Maine-Syracuse Longitudinal Study. Individuals with history …
Combining Locations From Working Memory And Long-Term Memory Into A Common Spatial Image, Nicholas Giudice, Roberta L. Klatzky, Christopher R. Bennett, Jack M. Loomis
Combining Locations From Working Memory And Long-Term Memory Into A Common Spatial Image, Nicholas Giudice, Roberta L. Klatzky, Christopher R. Bennett, Jack M. Loomis
Spatial Information Science and Engineering Faculty Scholarship
This research uses a novel integration paradigm to investigate whether target locations read in from long-term memory (LTM) differ from perceptually encoded inputs in spatial working-memory (SWM) with respect to systematic spatial error and/or noise, and whether SWM can simultaneously encompass both of these sources. Our results provide evidence for a composite representation of space in SWM derived from both perception and LTM, albeit with a loss in spatial precision of locations retrieved from LTM. More generally, the data support the concept of a spatial image in working memory and extend its potential sources to representations retrieved from LTM.
Perception Of 3-D Location Based On Vision, Touch, And Extended Touch, Nicholas Giudice, Roberta L. Klatzky, Christopher R. Bennett, Jack M. Loomis
Perception Of 3-D Location Based On Vision, Touch, And Extended Touch, Nicholas Giudice, Roberta L. Klatzky, Christopher R. Bennett, Jack M. Loomis
Spatial Information Science and Engineering Faculty Scholarship
Perception of the near environment gives rise to spatial images in working memory that continue to represent the spatial layout even after cessation of sensory input. As the observer moves, these spatial images are continuously updated. This research is concerned with (1) whether spatial images of targets are formed when they are sensed using extended touch (i.e., using a probe to extend the reach of the arm) and (2) the accuracy with which such targets are perceived. In Experiment 1, participants perceived the 3-D locations of individual targets from a fixed origin and were then tested with an updating task …
Indoor Inertial Waypoint Navigation For The Blind, Timothy H. Riehle, Shane M. Anderson, Patrick A. Lichter, William E. Whalen, Nicholas A. Giudice
Indoor Inertial Waypoint Navigation For The Blind, Timothy H. Riehle, Shane M. Anderson, Patrick A. Lichter, William E. Whalen, Nicholas A. Giudice
Spatial Information Science and Engineering Faculty Scholarship
Indoor navigation technology is needed to support seamless mobility for the visually impaired. This paper describes the construction and evaluation of an inertial dead reckoning navigation system that provides real-time auditory guidance along mapped routes. Inertial dead reckoning is a navigation technique coupling step counting together with heading estimation to compute changes in position at each step. The research described here outlines the development and evaluation of a novel navigation system that utilizes information from the mapped route to limit the problematic error accumulation inherent in traditional dead reckoning approaches. The prototype system consists of a wireless inertial sensor unit, …
Representing 3d Space In Working Memory: Spatial Images From Vision, Hearing, Touch, And Language, Jack M. Loomis, Roberta L. Klatzky, Nicholas A. Giudice
Representing 3d Space In Working Memory: Spatial Images From Vision, Hearing, Touch, And Language, Jack M. Loomis, Roberta L. Klatzky, Nicholas A. Giudice
Spatial Information Science and Engineering Faculty Scholarship
The chapter deals with a form of transient spatial representation referred to as a spatial image. Like a percept, it is externalized, scaled to the environment, and can appear in any direction about the observer. It transcends the concept of modality, as it can be based on inputs from the three spatial senses, from language, and from long-term memory. Evidence is presented that supports each of the claimed properties of the spatial image, showing that it is quite different from a visual image. Much of the evidence presented is based on spatial updating. A major concern is whether spatial images …