Cited by 62Reading and Literacy DevelopmentFace Recognition and PerceptionNeurobiology of Language and Bilingualism

Cortical activity related to accuracy of letter recognition

Garrett, A.S., Flowers, D.L., Absher, J.R., Fahey, F.H., Gage, H.D., Keyes, J.W., Porrino, L.J., Wood, F.B.·2000·NeuroImage

Abstract

Previous imaging and neurophysiological studies have suggested that the posterior inferior temporal region participates in tasks requiring the recognition of objects, including faces, words, and letters; however, the relationship between accuracy of recognition and activity in that region has not been systematically investigated. In this study, positron emission tomography was used to estimate glucose metabolism in 60 normal adults performing a computer-generated letter-recognition task. Both a region of interest and a voxel-based method of analysis, with subject state and trait variables statistically controlled, found task accuracy to be: (1) negatively related to metabolism in the left ventrolateral inferior temporal occipital cortex (Brodmann's area 37, or ventrolateral BA 37) and (2) positively related to metabolism in a region of the right ventrolateral frontal cortex (Brodmann's areas 47 and 11, or right BA 47/11). Left ventrolateral BA 37 was significantly related both to hits and to false alarms, whereas the right BA 47/11 finding was related only to false alarms. The results were taken as supporting an automaticity mechanism for left ventrolateral BA 37, whereby task accuracy was associated with automatic letter recognition and in turn to reduced metabolism in this extrastriate area. The right BA 47/11 finding was interpreted as reflecting a separate component of task accuracy, associated with selectivity of attention broadly and with inhibition of erroneous responding in particular. The findings are interpreted as supporting the need for control of variance due to subject and task variables, not only in correlational but also in subtraction designs.

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Crossref · 10.1006/nimg.1999.0528

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  • Individual subjects' accuracy at speeded letter recognition systematically correlates with the level of activation in the VWFA.

    “Furthermore, individual subjects' accuracy at speeded letter recognition systematically correlates with the level of activation in the VWFA [20].”

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Authors
Garrett, A. S., Flowers, D. L., Absher, J. R., Fahey, F. H., Gage, H. D., Keyes, J. W., Porrino, L. J., & Wood, F. B.
Affiliations
  • University of California, Davis (US)
  • Wake Forest University (US)
Venue
NeuroImage
Publisher
Elsevier BV
Published
2000-02
Volume
11
Issue
2
Pages
111-123
ISSN
1053-8119 (ISSN-L)
OpenAlex
W1999568722
Cited by
62
References
81
Citations by year
2024: 2 · 2020: 2 · 2019: 1 · 2018: 1 · 2017: 3 · 2016: 2 · 2015: 1 · 2014: 2 · 2013: 2 · 2012: 2
FWCI
5.58
Type
journal article
Language
en
Open access
closed
Locations
  • NeuroImage (publishedVersion)
  • PubMed (publishedVersion)
Funders
Eunice Kennedy Shriver National Institute of Child Health and Human Development (P01-HD-21887, P01HD021887)
Topics
  • Social Sciences › Psychology › Developmental and Educational Psychology › Reading and Literacy Development
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Face Recognition and Perception
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neurobiology of Language and Bilingualism
Keywords
letter recognition, recognition accuracy, glucose metabolism, automaticity, selective attention, false alarms, voxel-based analysis
MeSH terms
Adult, Aged, Blood Glucose, Brain Mapping, Cerebral Cortex, Dominance, Cerebral, Female, Humans, Male, Middle Aged, Pattern Recognition, Visual, Mental Recall, Temporal Lobe, Tomography, Emission-Computed, Fluorodeoxyglucose F18

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