Identifying brain systems for gaze orienting during reading: fMRI investigation of the Landolt paradigm

Hillen, Rebekka, Guenther, Thomas, Kohlen, Claudia, Eckers, Cornelia, van Ermingen-Marbach, Muna, Sass, Katharina, Scharke, Wolfgang, Vollmar, Josefine, Radach, Ralph and Heim, Stefan (2013) Identifying brain systems for gaze orienting during reading: fMRI investigation of the Landolt paradigm. Frontiers in Human Neuroscience, 7 JUL: . doi:10.3389/fnhum.2013.00384

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Author Hillen, Rebekka
Guenther, Thomas
Kohlen, Claudia
Eckers, Cornelia
van Ermingen-Marbach, Muna
Sass, Katharina
Scharke, Wolfgang
Vollmar, Josefine
Radach, Ralph
Heim, Stefan
Title Identifying brain systems for gaze orienting during reading: fMRI investigation of the Landolt paradigm
Journal name Frontiers in Human Neuroscience   Check publisher's open access policy
ISSN 1662-5161
Publication date 2013-07
Year available 2013
Sub-type Article (original research)
DOI 10.3389/fnhum.2013.00384
Open Access Status DOI
Volume 7
Issue JUL
Total pages 14
Place of publication Lausanne, Switzerland
Publisher Frontiers Research Foundation
Collection year 2014
Language eng
Abstract The Landolt reading paradigm was created in order to dissociate effects of eye movements and attention from lexical, syntactic, and sub-lexical processing. While previous eye-tracking and behavioral findings support the usefulness of the paradigm, it remains to be shown that the paradigm actually relies on the brain networks for occulomotor control and attention, but not on systems for lexical/syntactic/orthographic processing. Here, 20 healthy volunteers underwent fMRI scanning while reading sentences (with syntax) or unconnected lists of written stimuli (no syntax) consisting of words (with semantics) or pseudowords (no semantics). In an additional “Landolt reading” condition, all letters were replaced by closed circles, which should be scanned for targets (Landolt's rings) in a reading-like fashion from left to right. A conjunction analysis of all five conditions revealed the visual scanning network which involved bilateral visual cortex, premotor cortex, and superior parietal cortex, but which did not include regions for semantics, syntax, or orthography. Contrasting the Landolt reading condition with all other regions revealed additional involvement of the right superior parietal cortex (areas 7A/7P/7PC) and postcentral gyrus (area 2) involved in deliberate gaze shifting. These neuroimaging findings demonstrate for the first time that the linguistic and orthographic brain network can be dissociated from a pure gaze-orienting network with the Landolt paradigm. Consequently, the Landolt paradigm may provide novel insights into the contributions of linguistic and non-linguistic factors on reading failure e.g., in developmental dyslexia. - See more at:
Keyword Reading
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article number 384.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Psychology Publications
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Citation counts: TR Web of Science Citation Count  Cited 8 times in Thomson Reuters Web of Science Article | Citations
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