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  Model-generated lexical activity predicts graded ERP amplitudes in lexical decision

Braun, M., Jacobs, A. M., Hahne, A., Ricker, B., Hofmann, M., & Hutzler, F. (2006). Model-generated lexical activity predicts graded ERP amplitudes in lexical decision. Brain Research, 1073-1074, 431-439. doi:10.1016/j.brainres.2005.12.078.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0010-C72F-D Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-5F8E-4
Genre: Journal Article

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 Creators:
Braun, M., Author
Jacobs, Arthur M., Author
Hahne, Anja1, Author              
Ricker, B., Author
Hofmann, Markus, Author
Hutzler, F., Author
Affiliations:
1Department Neuropsychology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634551              

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Free keywords: Dual-route cascaded model; Multiple read-out model; Global lexical activity; Event-related potential; N-metric; Fast-guess; Identification process; Deadline process
 Abstract: Recent neurocognitive studies of visual word recognition provide information about neuronal networks correlated with processes involved in lexical access and their time course (e.g., [Holcomb, Ph.J., Grainger J. and O'Rourke, T. (2002). An Electrophysiological Study of the Effects of Orthographic Neighborhood Size on Printed Word Perception, J. of Cogn. Neurosci. 14 938–950; Binder, J.R., McKiernan, K.A., Parsons, M.E., Westbury, C.F., Possing, E.T., Kaufman, J.N. and Buchanan, L. (2003). Neural Correlates of Lexical Access during Visual Word Recognition, J. Cogn. Neurosci. 15 372–393.]). These studies relate the orthographic neighborhood density of letter strings to the amount of global lexical activity in the brain, generated by a hypothetical mental lexicon as speculated in an early paper by [Jacobs, A.M. and Carr, T.H. (1995). Mind mappers and cognitive modelers: Toward cross-fertilization, Behav. Brain. Sci. 18 362–363]. The present study uses model-generated stimuli theoretically eliciting graded global lexical activity and relates this activity to activation of lexical processing networks using event-related potentials (ERPs). The results from a lexical decision task provide evidence for an effect of lexicality around 350 ms post-stimulus and also a graded effect of global lexical activity for nonwords around 500 ms post-stimulus. The data are interpreted as reflecting two different decision processes: an identification process based on local lexical activity underlying the ‘yes’ response to words and a temporal deadline process underlying the ‘no’ response to nonwords based on global lexical activity.

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Language(s): eng - English
 Dates: 2006
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 293329
Other: P7292
DOI: 10.1016/j.brainres.2005.12.078
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Title: Brain Research
  Other : Brain Res.
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 1073-1074 Sequence Number: - Start / End Page: 431 - 439 Identifier: ISSN: 0006-8993
CoNE: /journals/resource/954926250616