Mapping the anatomy of perceptual pseudoneglect. A multivariate approach
Fundamental to the understanding of the functions of spatial cognition and attention is to clarify the underlying neural mechanisms. It is clear that relatively right-dominant activity in ventral and dorsal parieto-frontal cortex is associated with attentional reorienting, certain forms of mental im...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-02-01
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| Series: | NeuroImage |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1053811919309930 |
| _version_ | 1828832294969802752 |
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| author | Jiaqing Chen Andy C.H. Lee Edward B. O’Neil Mura Abdul-Nabi Matthias Niemeier |
| author_facet | Jiaqing Chen Andy C.H. Lee Edward B. O’Neil Mura Abdul-Nabi Matthias Niemeier |
| author_sort | Jiaqing Chen |
| collection | DOAJ |
| description | Fundamental to the understanding of the functions of spatial cognition and attention is to clarify the underlying neural mechanisms. It is clear that relatively right-dominant activity in ventral and dorsal parieto-frontal cortex is associated with attentional reorienting, certain forms of mental imagery and spatial working memory for higher loads, while lesions mostly to right ventral areas cause spatial neglect with pathological attentional biases to the right side. In contrast, complementary leftward biases in healthy people, called pseudoneglect, have been associated with varying patterns of cortical activity. Notably, this inconsistency may be explained, at least in part, by the fact that pseudoneglect studies have often employed experimental paradigms that do not control sufficiently for cognitive processes unrelated to pseudoneglect. To address this issue, here we administered a carefully designed continuum of pseudoneglect and control tasks in healthy adults while using functional magnetic resonance imaging (fMRI). Data submitted to partial least square (PLS) imaging analysis yielded a significant latent variable that identified a right-dominant network of brain regions along the intra-occipital and -parietal sulci, frontal eye fields and right ventral cortex in association with perceptual pseudoneglect. Our results shed new light on the interplay of attentional and cognitive systems in pseudoneglect. |
| first_indexed | 2024-12-12T16:51:19Z |
| format | Article |
| id | doaj.art-0b77788426ec4f55855e8b58245e865c |
| institution | Directory Open Access Journal |
| issn | 1095-9572 |
| language | English |
| last_indexed | 2024-12-12T16:51:19Z |
| publishDate | 2020-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | NeuroImage |
| spelling | doaj.art-0b77788426ec4f55855e8b58245e865c2022-12-22T00:18:22ZengElsevierNeuroImage1095-95722020-02-01207116402Mapping the anatomy of perceptual pseudoneglect. A multivariate approachJiaqing Chen0Andy C.H. Lee1Edward B. O’Neil2Mura Abdul-Nabi3Matthias Niemeier4Department of Psychology, University of Toronto, 1265 Military Trail, Toronto, ON, M1C 1A4, CanadaDepartment of Psychology, University of Toronto, 1265 Military Trail, Toronto, ON, M1C 1A4, Canada; Baycrest Centre for Geriatric Care, 3560 Bathurst St, Toronto, ON, M6A 2E1, CanadaDepartment of Psychology, University of Toronto, 1265 Military Trail, Toronto, ON, M1C 1A4, CanadaDepartment of Psychology, University of Toronto, 1265 Military Trail, Toronto, ON, M1C 1A4, CanadaDepartment of Psychology, University of Toronto, 1265 Military Trail, Toronto, ON, M1C 1A4, Canada; Centre for Vision Research, York University, 4700 Keele Street, Toronto, Ontario, M3J 1P3, Canada; Corresponding author. Department of Psychology, University of Toronto at Scarborough, 1265 Military Trail, Toronto, M1C 1A4, Canada.Fundamental to the understanding of the functions of spatial cognition and attention is to clarify the underlying neural mechanisms. It is clear that relatively right-dominant activity in ventral and dorsal parieto-frontal cortex is associated with attentional reorienting, certain forms of mental imagery and spatial working memory for higher loads, while lesions mostly to right ventral areas cause spatial neglect with pathological attentional biases to the right side. In contrast, complementary leftward biases in healthy people, called pseudoneglect, have been associated with varying patterns of cortical activity. Notably, this inconsistency may be explained, at least in part, by the fact that pseudoneglect studies have often employed experimental paradigms that do not control sufficiently for cognitive processes unrelated to pseudoneglect. To address this issue, here we administered a carefully designed continuum of pseudoneglect and control tasks in healthy adults while using functional magnetic resonance imaging (fMRI). Data submitted to partial least square (PLS) imaging analysis yielded a significant latent variable that identified a right-dominant network of brain regions along the intra-occipital and -parietal sulci, frontal eye fields and right ventral cortex in association with perceptual pseudoneglect. Our results shed new light on the interplay of attentional and cognitive systems in pseudoneglect.http://www.sciencedirect.com/science/article/pii/S1053811919309930PseudoneglectSpatial attentionVisual awarenessfMRIPLS |
| spellingShingle | Jiaqing Chen Andy C.H. Lee Edward B. O’Neil Mura Abdul-Nabi Matthias Niemeier Mapping the anatomy of perceptual pseudoneglect. A multivariate approach NeuroImage Pseudoneglect Spatial attention Visual awareness fMRI PLS |
| title | Mapping the anatomy of perceptual pseudoneglect. A multivariate approach |
| title_full | Mapping the anatomy of perceptual pseudoneglect. A multivariate approach |
| title_fullStr | Mapping the anatomy of perceptual pseudoneglect. A multivariate approach |
| title_full_unstemmed | Mapping the anatomy of perceptual pseudoneglect. A multivariate approach |
| title_short | Mapping the anatomy of perceptual pseudoneglect. A multivariate approach |
| title_sort | mapping the anatomy of perceptual pseudoneglect a multivariate approach |
| topic | Pseudoneglect Spatial attention Visual awareness fMRI PLS |
| url | http://www.sciencedirect.com/science/article/pii/S1053811919309930 |
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