Abstract

The investigator plans to use line bisection as an index of biases in spatial attention in normal subjects presumably resulting from some kind of hemispheric competition. In particular he proposes to measure line bisection as a function of line length and line position, and use this data to infer spatial attentional distribution across the right and left hemispheres as postulated in a model by Anderson. In addition, he plans to vary line contrast to see if these distributions are purely attentional or reflect stimulus salience more generally

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Eye Institute (NEI)
Type
Academic Research Enhancement Awards (AREA) (R15)
Project #
3R15EY012267-01S2
Application #
6348746
Study Section
Visual Sciences B Study Section (VISB)
Program Officer
Oberdorfer, Michael
Project Start
1998-09-30
Project End
2002-09-29
Budget Start
1998-09-30
Budget End
2002-09-29
Support Year
1
Fiscal Year
2000
Total Cost
$34,430
Indirect Cost

  Institution

Name
North Dakota State University
Department
Psychology
Type
Schools of Arts and Sciences
DUNS #
803882299
City
Fargo
State
ND
Country
United States
Zip Code
58108

  Publications

Leone, Lynnette; McCourt, Mark E (2010) The effect of acute ethanol challenge on global visuospatial attention: exaggeration of leftward bias in line bisection. Laterality 15:327-42
Sosa, Yamaya; Teder-Sälejärvi, Wolfgang A; McCourt, Mark E (2010) Biases of spatial attention in vision and audition. Brain Cogn 73:229-35
McCourt, Mark E; Garlinghouse, Matt; Reuter-Lorenz, Patricia A (2005) Unilateral visual cueing and asymmetric line geometry share a common attentional origin in the modulation of pseudoneglect. Cortex 41:499-511
Foxe, John J; McCourt, Mark E; Javitt, Daniel C (2003) Right hemisphere control of visuospatial attention: line-bisection judgments evaluated with high-density electrical mapping and source analysis. Neuroimage 19:710-26
McCourt, M E (2001) Performance consistency of normal observers in forced-choice tachistoscopic visual line bisection. Neuropsychologia 39:1065-76
McCourt, M E; Freeman, P; Tahmahkera-Stevens, C et al. (2001) The influence of unimanual response on pseudoneglect magnitude. Brain Cogn 45:52-63
McCourt, M E; Garlinghouse, M; Butler, J (2001) The influence of viewing eye on pseudoneglect magnitude. J Int Neuropsychol Soc 7:391-5
McCourt, M E; Garlinghouse, M (2000) Stimulus modulation of pseudoneglect: influence of line geometry. Neuropsychologia 38:520-4
McCourt, M E; Garlinghouse, M (2000) Asymmetries of visuospatial attention are modulated by viewing distance and visual field elevation: pseudoneglect in peripersonal and extrapersonal space. Cortex 36:715-31
Jewell, G; McCourt, M E (2000) Pseudoneglect: a review and meta-analysis of performance factors in line bisection tasks. Neuropsychologia 38:93-110

Showing the most recent 10 out of 12 publications