Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
The influence of viewing eye on pseudoneglect magnitude
Autore:
McCourt, ME; Garlinghouse, M; Butler, J;
Indirizzi:
N Dakota State Univ, Dept Psychol, Fargo, ND 58105 USA N Dakota State Univ Fargo ND USA 58105 Dept Psychol, Fargo, ND 58105 USA
Titolo Testata:
JOURNAL OF THE INTERNATIONAL NEUROPSYCHOLOGICAL SOCIETY
fascicolo: 3, volume: 7, anno: 2001,
pagine: 391 - 395
SICI:
1355-6177(200103)7:3<391:TIOVEO>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
UNILATERAL SPATIAL NEGLECT; IN-LINE BISECTION; VISUAL NEGLECT; STIMULATION; ATTENTION; REHABILITATION; HEMINEGLECT;
Keywords:
line bisection; pseudoneglect; spatial attention; uniocular; binocular;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: McCourt, ME N Dakota State Univ, Dept Psychol, Fargo, ND 58105 USA N Dakota State Univ Fargo ND USA 58105 l, Fargo, ND 58105 USA
Citazione:
M.E. McCourt et al., "The influence of viewing eye on pseudoneglect magnitude", J INT NEURO, 7(3), 2001, pp. 391-395

Abstract

Various factors influence the degree of leftward error (pseudoneglect) that typifies the performance of normal individuals in line bisection tasks. This experiment reveals that the eye through which stimuli are viewed also exerts a modulating influence on spatial attention, as indexed by significant alterations in the magnitude of pseudoneglect. Using a forced-choice tachistoscopic line bisection protocol, 24 participants (12 male; 12 female) bisected horizontally oriented lines (22.6 degrees w X 0.39 degrees h) presented to central vision in 3 conditions: left uniocular viewing (L), right uniocular viewing (R), and binocular viewing (B). Perceived line midpoint, a measure of bisection accuracy, deviated significantly leftward of veridical(p < .05) in all viewing conditions, confirming a tonic asymmetry of visuospatial attention in normal young observers. In addition, a significant influence of viewing condition was found (p < .05) where pseudoneglect was greatest in the L condition, followed by the B and R conditions, respectively. Analysis of the slopes of the psychometric functions revealed significantly greater bisection precision in the binocular versus uniocular viewing conditions (p < .05). The results are interpreted to suggest that phasic effects on spatial attention can be produced by uniocular viewing via asymmetricretinotectal projections The results are consistent with activation-orientation theories of attentional asymmetry.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 06:43:23