A common parieto-frontal network is recruited under both low visibility and high perceptual interference conditions. Marois, R, Chun, M M, & Gore, J C J Neurophysiol, 92(5):2985–2992, 2004. ![A common parieto-frontal network is recruited under both low visibility and high perceptual interference conditions [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper abstract bibtex A fundamental property of visual attention is to select targets from interfering distractors. However, attention can also facilitate the detectability of near-threshold items presented in isolation. The extent to which these two perceptually challenging conditions are resolved by the same neural mechanisms is not well known. In the present event-related fMRI experiment, subjects performed a letter identification task under two perceptually challenging conditions; when the luminance contrast of a target letter was reduced (perceptual visibility manipulation) and when the target letter was flanked by distractors (perceptual interference manipulation). Perceptual interference recruited the right parietal and mid-lateral frontal cortex, while perceptual visibility activated these regions bilaterally. The overlap of activated areas between the two perceptual manipulations suggests that a single parieto-frontal network is summoned under both perceptual visibility and interference conditions.
@article{marois_common_2004,
title = {A common parieto-frontal network is recruited under both low visibility and high perceptual interference conditions},
volume = {92},
url = {http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=15486425},
abstract = {A fundamental property of visual attention is to select targets from interfering distractors. However, attention can also facilitate the detectability of near-threshold items presented in isolation. The extent to which these two perceptually challenging conditions are resolved by the same neural mechanisms is not well known. In the present event-related fMRI experiment, subjects performed a letter identification task under two perceptually challenging conditions; when the luminance contrast of a target letter was reduced (perceptual visibility manipulation) and when the target letter was flanked by distractors (perceptual interference manipulation). Perceptual interference recruited the right parietal and mid-lateral frontal cortex, while perceptual visibility activated these regions bilaterally. The overlap of activated areas between the two perceptual manipulations suggests that a single parieto-frontal network is summoned under both perceptual visibility and interference conditions.},
number = {5},
journal = {J Neurophysiol},
author = {Marois, R and Chun, M M and Gore, J C},
year = {2004},
pmid = {15486425},
keywords = {Attention/*physiology, Brain Mapping/*methods, Humans, Magnetic Resonance Imaging, Nerve Net/physiology, Parietal Lobe/physiology, Perception, Research Support, U.S. Gov't, Non-P.H.S., Research Support, U.S. Gov't, P.H.S., Visual Pathways/*physiology, Visual Perception/*physiology},
pages = {2985--2992},
}
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In the present event-related fMRI experiment, subjects performed a letter identification task under two perceptually challenging conditions; when the luminance contrast of a target letter was reduced (perceptual visibility manipulation) and when the target letter was flanked by distractors (perceptual interference manipulation). Perceptual interference recruited the right parietal and mid-lateral frontal cortex, while perceptual visibility activated these regions bilaterally. 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