Early Activity in Broca's Area During Reading Reflects Fast Access to Articulatory Codes From Print

Klein, Michael, Grainger, Jonathan, Wheat, Katherine, Millman, Rebecca, Simpson, Michael, Hansen, Peter and Cornelissen, Piers (2015) Early Activity in Broca's Area During Reading Reflects Fast Access to Articulatory Codes From Print. Cerebral Cortex, 25 (7). pp. 1715-1723. ISSN 1047-3211

[img]
Preview
Text (Full text)
Klein- Early Activity in Broca's Area.pdf - Accepted Version

Download (1MB) | Preview
Official URL: http://dx.doi.org/10.1093/cercor/bht350

Abstract

Prior evidence for early activity in Broca's area during reading may reflect fast access to articulatory codes in left inferior frontal gyrus pars opercularis (LIFGpo). We put this hypothesis to test using a benchmark for articulatory involvement in reading known as the masked onset priming effect (MOPE). In masked onset priming, briefly presented pronounceable strings of letters that share an initial phoneme with subsequently presented target words (e.g., gilp-GAME) facilitate word naming responses compared with unrelated primes (dilp-GAME). Crucially, these priming effects only occur when the task requires articulation (naming), and not when it requires lexical decisions. A standard explanation of masked onset priming is that it reflects fast computation of articulatory output codes from letter representations. We therefore predicted 1) that activity in left IFG pars opercularis would be modulated by masked onset priming, 2) that priming-related modulation in LIFGpo would immediately follow activity in occipital cortex, and 3) that this modulation would be greater for naming than for lexical decision. These predictions were confirmed in a magnetoencephalography (MEG) priming study. MOPEs emerged in left IFG at ∼100 ms posttarget onset, and the priming effects were more sustained when the task involved articulation.

Item Type: Article
Additional Information: Published online 20-1-14 PB
Uncontrolled Keywords: beamforming, broca's area, inferior frontal gyrus pars opercularis, masked onset priming, MEG, MOPE
Subjects: C800 Psychology
Department: Faculties > Health and Life Sciences > School of Life Sciences > Psychology
Related URLs:
Depositing User: Nicola King
Date Deposited: 19 Jun 2014 13:21
Last Modified: 20 Oct 2017 01:36
URI: http://nrl.northumbria.ac.uk/id/eprint/16659

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics


Policies: NRL Policies | NRL University Deposit Policy | NRL Deposit Licence