Cited by 89Visual perception and processing mechanismsVisual Attention and Saliency DetectionMultisensory perception and integration

Spatiotopic coding of BOLD signal in human visual cortex depends on spatial attention

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Abstract

The neural substrate of the phenomenological experience of a stable visual world remains obscure. One possible mechanism would be to construct spatiotopic neural maps where the response is selective to the position of the stimulus in external space, rather than to retinal eccentricities, but evidence for these maps has been inconsistent. Here we show, with fMRI, that when human subjects perform concomitantly a demanding attentive task on stimuli displayed at the fovea, BOLD responses evoked by moving stimuli irrelevant to the task were mostly tuned in retinotopic coordinates. However, under more unconstrained conditions, where subjects could attend easily to the motion stimuli, BOLD responses were tuned not in retinal but in external coordinates (spatiotopic selectivity) in many visual areas, including MT, MST, LO and V6, agreeing with our previous fMRI study. These results indicate that spatial attention may play an important role in mediating spatiotopic selectivity.

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Authors
Crespi, S., Biagi, L., d'Avossa, G., Burr, D. C., Tosetti, M., & Morrone, M. C.
Affiliations
  • Vita-Salute San Raffaele University (IT)
  • Fondazione Stella Maris (IT)
  • Neuroscience Institute (IT)
  • University of Pisa (IT)
Corresponding author
Burr, David C.
Venue
PLoS ONE
Published
2011-07-07
Volume
6
Issue
7
Pages
e21661
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2128782308
Cited by
89
References
70
Citations by year
2026: 4 · 2025: 5 · 2024: 5 · 2023: 1 · 2022: 4 · 2021: 6 · 2020: 5 · 2019: 6 · 2018: 3 · 2017: 7 · 2016: 8 · 2015: 7 · 2014: 9 · 2013: 10 · 2012: 6
FWCI
4.54
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Florence Research (University of Florence) (submittedVersion, cc-by)
  • CINECA IRIS Institutial research information system (University of Pisa) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
  • Archivio Istituzionale della Ricerca - Università Vita-Salute San Raffaele (submittedVersion)
Funders
  • Ministero dell’Istruzione, dell’Università e della Ricerca
  • Ministerio de Universidades
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Visual Attention and Saliency Detection
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Multisensory perception and integration
Keywords
retinotopic map, spatial attention, BOLD signal, visual cortex, motion perception, MT, MST, Los, V6
MeSH terms
Adult, Attention, Brain Mapping, Eye Movements, Female, Fovea Centralis, Humans, Magnetic Resonance Imaging, Male, Motion Perception, Oxygen, Photic Stimulation, Psychomotor Performance, Space Perception, Visual Cortex, Visual Perception

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