title: Unattentive speech processing is influenced by orthographic knowledge: evidence from mismatch negativity.
abstract: How far can acquired knowledge such as orthographic knowledge affect pre-existing abilities such as speech perception? This controversial issue was addressed by investigating the automaticity of the influence of orthographic knowledge on speech processing. Many studies demonstrated this influence in active, lexico-semantic speech processing tasks. However, it has never been observed when speech is unattended. Here, the Mismatch Negativity (MMN), an automatic index of experience-dependent auditory traces, was recorded in an unattended oddball paradigm manipulating the orthographic congruency between frequent and deviant spoken riming words. Both orthographically congruent and incongruent deviant words elicited a typical MMN over the fronto-central regions, with a stronger response in the incongruent condition. The finding showed that the orthographic dimension of spoken words influences a physiological marker of speech processing although participants were required not to attend to the auditory input. This provides evidence for an impact of acquiring a written code on speech processing.
authors.affiliation: Laboratoire Parole et Langage (LPL), CNRS (UMR 7309), Aix-Marseille Université, Aix-en-Provence, France. Electronic address: tiga.pattama@gmail.com.
authors.forename: Chotiga
authors.initials: C
authors.lastname: Pattamadilok
authors.affiliation: Unité de Recherche en Neurosciences Cognitives (UNESCOG), Center for Research in Cognition & Neurosciences (CRCN), Université Libre de Bruxelles (ULB), Belgium.
authors.forename: José
authors.initials: J
authors.lastname: Morais
authors.affiliation: Unité de Recherche en Neurosciences Cognitives (UNESCOG), Center for Research in Cognition & Neurosciences (CRCN), Université Libre de Bruxelles (ULB), Belgium; Laboratoire de Neurophysiologie Sensorielle et Cognitive, Université Libre de Bruxelles (ULB), Belgium.
authors.forename: Cécile
authors.initials: C
authors.lastname: Colin
authors.affiliation: Unité de Recherche en Neurosciences Cognitives (UNESCOG), Center for Research in Cognition & Neurosciences (CRCN), Université Libre de Bruxelles (ULB), Belgium; Fonds de la Recherche Scientifique - FNRS, Belgium.
authors.forename: Régine
authors.initials: R
authors.lastname: Kolinsky
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001288:Attention / Q000502:physiology*; D001931:Brain Mapping; D004569:Electroencephalography; D005072:Evoked Potentials, Auditory / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D010700:Phonetics; D011932:Reading; D021641:Recognition, Psychology / Q000502:physiology*; D013067:Speech Perception / Q000502:physiology*; D055815:Young Adult
keywords: Event-related potentials; Orthographic knowledge; Reading acquisition; Speech perception