Stimulus modulation of pseudoneglect: Influence of line geometry

Mark E. McCourt; Matt Garlinghouse

doi:10.1016/S0028-3932(99)00085-8

Stimulus modulation of pseudoneglect: Influence of line geometry

Mark E. McCourt, Matt Garlinghouse

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

A variety of stimulus factors have recently been shown to influence the performance of normal subjects on line bisection tasks (i.e., pseudoneglect), independent of motoric factors such as scanning or hand use [McCourt and Jewell (1999) Neuropsychologia 35, 843-55]. An experiment is described which further examined the modulating influence of line geometry in determining the magnitude of pseudoneglect. Subjects bisected horizontally oriented trapezoidal lines presented in central vision whose narrow end pointed either left or right. A highly significant influence of line geometry was found which modulated a tonic leftward error (i.e., pseudoneglect). The results are interpreted in the context of a 'center-of-mass' effect [Shuren, Jacobs and Heilman (1997) Brain and Cognition, 34, 293-300]. Further studies designed to tease apart the potentially independent effects of perceptual and attentional asymmetry on bisection performance are suggested. Copyright (C) 2000 Elsevier Science Ltd.

Original language	English (US)
Pages (from-to)	520-524
Number of pages	5
Journal	Neuropsychologia
Volume	38
Issue number	4
DOIs	https://doi.org/10.1016/S0028-3932(99)00085-8
State	Published - Apr 2000
Externally published	Yes

ASJC Scopus subject areas

Experimental and Cognitive Psychology
Cognitive Neuroscience
Behavioral Neuroscience

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title = "Stimulus modulation of pseudoneglect: Influence of line geometry",

abstract = "A variety of stimulus factors have recently been shown to influence the performance of normal subjects on line bisection tasks (i.e., pseudoneglect), independent of motoric factors such as scanning or hand use [McCourt and Jewell (1999) Neuropsychologia 35, 843-55]. An experiment is described which further examined the modulating influence of line geometry in determining the magnitude of pseudoneglect. Subjects bisected horizontally oriented trapezoidal lines presented in central vision whose narrow end pointed either left or right. A highly significant influence of line geometry was found which modulated a tonic leftward error (i.e., pseudoneglect). The results are interpreted in the context of a 'center-of-mass' effect [Shuren, Jacobs and Heilman (1997) Brain and Cognition, 34, 293-300]. Further studies designed to tease apart the potentially independent effects of perceptual and attentional asymmetry on bisection performance are suggested. Copyright (C) 2000 Elsevier Science Ltd.",

author = "McCourt, {Mark E.} and Matt Garlinghouse",

note = "Funding Information: This research was supported by a grant (to MEM) from the National Eye Institute (EY12267-01). The authors also thank George Jewell, Jessica Slater and Kari Ronningen for help with stimulus preparation, data collection and analysis. ",

year = "2000",

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doi = "10.1016/S0028-3932(99)00085-8",

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T2 - Influence of line geometry

AU - McCourt, Mark E.

AU - Garlinghouse, Matt

N1 - Funding Information: This research was supported by a grant (to MEM) from the National Eye Institute (EY12267-01). The authors also thank George Jewell, Jessica Slater and Kari Ronningen for help with stimulus preparation, data collection and analysis.

PY - 2000/4

Y1 - 2000/4

N2 - A variety of stimulus factors have recently been shown to influence the performance of normal subjects on line bisection tasks (i.e., pseudoneglect), independent of motoric factors such as scanning or hand use [McCourt and Jewell (1999) Neuropsychologia 35, 843-55]. An experiment is described which further examined the modulating influence of line geometry in determining the magnitude of pseudoneglect. Subjects bisected horizontally oriented trapezoidal lines presented in central vision whose narrow end pointed either left or right. A highly significant influence of line geometry was found which modulated a tonic leftward error (i.e., pseudoneglect). The results are interpreted in the context of a 'center-of-mass' effect [Shuren, Jacobs and Heilman (1997) Brain and Cognition, 34, 293-300]. Further studies designed to tease apart the potentially independent effects of perceptual and attentional asymmetry on bisection performance are suggested. Copyright (C) 2000 Elsevier Science Ltd.

AB - A variety of stimulus factors have recently been shown to influence the performance of normal subjects on line bisection tasks (i.e., pseudoneglect), independent of motoric factors such as scanning or hand use [McCourt and Jewell (1999) Neuropsychologia 35, 843-55]. An experiment is described which further examined the modulating influence of line geometry in determining the magnitude of pseudoneglect. Subjects bisected horizontally oriented trapezoidal lines presented in central vision whose narrow end pointed either left or right. A highly significant influence of line geometry was found which modulated a tonic leftward error (i.e., pseudoneglect). The results are interpreted in the context of a 'center-of-mass' effect [Shuren, Jacobs and Heilman (1997) Brain and Cognition, 34, 293-300]. Further studies designed to tease apart the potentially independent effects of perceptual and attentional asymmetry on bisection performance are suggested. Copyright (C) 2000 Elsevier Science Ltd.

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Stimulus modulation of pseudoneglect: Influence of line geometry

Abstract

ASJC Scopus subject areas

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