CaSe MiXiNg recruits visual attention: PET evidence

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CaSe MiXiNg recruits visual attention: PET evidence. / Mayall, Katherine; Humphreys, Glyn; Olson, Andrew; Mechelli, A; Price, CJ.

In: Journal of Cognitive Neuroscience, Vol. 13, 01.01.2001, p. 844-853.

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@article{45c04a6b352441cbb685dc37e092dda5,
title = "CaSe MiXiNg recruits visual attention: PET evidence",
abstract = "The early stages of visual word recognition were investigated by scanning participants using PET as them took part in implicit and explicit reading tasks with visually disrupted stimuli. CaSe MiXiNg has been shown in behavioral Studies to increase reaction times (RTs) in naming and other word recognition tasks. In this study. we found that during both an implicit (feature detection) task and an explicit word-naming task, mixed-case words compared to same-case words produced increased activation in an area of the right parietal cortex previously associated with visual attention. No effect of case was found in this area for pseudowords or consonant strings. Further. lowering the contrast of the stimuli slowed RTs as much as case mixing, but did not lead to the same increase in right parietal activation. No significant effect of case mixing was observed in left-hemisphere language areas. The results suggest that reading mixed-case words requires increased attentional processing. However, later word recognition processes may be relatively unaffected by the disruption in presentation.",
author = "Katherine Mayall and Glyn Humphreys and Andrew Olson and A Mechelli and CJ Price",
year = "2001",
month = jan,
day = "1",
doi = "10.1162/08989290152541494",
language = "English",
volume = "13",
pages = "844--853",
journal = "Journal of Cognitive Neuroscience",
issn = "0898-929X",
publisher = "Massachusetts Institute of Technology Press",

}

RIS

TY - JOUR

T1 - CaSe MiXiNg recruits visual attention: PET evidence

AU - Mayall, Katherine

AU - Humphreys, Glyn

AU - Olson, Andrew

AU - Mechelli, A

AU - Price, CJ

PY - 2001/1/1

Y1 - 2001/1/1

N2 - The early stages of visual word recognition were investigated by scanning participants using PET as them took part in implicit and explicit reading tasks with visually disrupted stimuli. CaSe MiXiNg has been shown in behavioral Studies to increase reaction times (RTs) in naming and other word recognition tasks. In this study. we found that during both an implicit (feature detection) task and an explicit word-naming task, mixed-case words compared to same-case words produced increased activation in an area of the right parietal cortex previously associated with visual attention. No effect of case was found in this area for pseudowords or consonant strings. Further. lowering the contrast of the stimuli slowed RTs as much as case mixing, but did not lead to the same increase in right parietal activation. No significant effect of case mixing was observed in left-hemisphere language areas. The results suggest that reading mixed-case words requires increased attentional processing. However, later word recognition processes may be relatively unaffected by the disruption in presentation.

AB - The early stages of visual word recognition were investigated by scanning participants using PET as them took part in implicit and explicit reading tasks with visually disrupted stimuli. CaSe MiXiNg has been shown in behavioral Studies to increase reaction times (RTs) in naming and other word recognition tasks. In this study. we found that during both an implicit (feature detection) task and an explicit word-naming task, mixed-case words compared to same-case words produced increased activation in an area of the right parietal cortex previously associated with visual attention. No effect of case was found in this area for pseudowords or consonant strings. Further. lowering the contrast of the stimuli slowed RTs as much as case mixing, but did not lead to the same increase in right parietal activation. No significant effect of case mixing was observed in left-hemisphere language areas. The results suggest that reading mixed-case words requires increased attentional processing. However, later word recognition processes may be relatively unaffected by the disruption in presentation.

UR - http://www.scopus.com/inward/record.url?scp=0035880798&partnerID=8YFLogxK

U2 - 10.1162/08989290152541494

DO - 10.1162/08989290152541494

M3 - Article

C2 - 11564327

VL - 13

SP - 844

EP - 853

JO - Journal of Cognitive Neuroscience

JF - Journal of Cognitive Neuroscience

SN - 0898-929X

ER -