An ERP investigation of orthographic precision in deaf and hearing readers

NEUROPSYCHOLOGIA

卷:146

Article

Meade, Gabriela^1,2  Grainger, Jonathan^3,4  Midgley, Katherine J.⁵  Holcomb, Phillip J.⁵  Emmorey, Karen⁶ 

[1] San Diego State Univ, Joint Doctoral Program Language & Commun Disorder, San Diego, CA 92182 USA

[2] Univ Calif San Diego, San Diego, CA 92103 USA

[3] CNRS, Lab Psychol Cognit, Paris, France

[4] Aix Marseille Univ, Marseille, France

[5] San Diego State Univ, Dept Psychol, San Diego, CA 92182 USA

[6] San Diego State Univ, Sch Speech Language & Hearing Sci, San Diego, CA 92182 USA

关键词: Orthographic precision;    Deaf readers;    Transposed-letter priming;    ERPs;   

DOI  :  10.1016/j.neuropsychologia.2020.107542

来源: Elsevier

【 摘 要 】

Phonology is often assumed to play a role in the tuning of orthographic representations, but it is unknown whether deaf readers' reduced access to spoken phonology reduces orthographic precision. To index how precisely deaf and hearing readers encode orthographic information, we used a masked transposed-letter (TL) priming paradigm. Word targets were preceded by TL primes formed by reversing two letters in the word and substitution primes in which the same two letters were replaced. The two letters that were manipulated were either in adjacent or non-adjacent positions, yielding four prime conditions: adjacent TL (e.g., chikcen-CHICKEN), adjacent substitution (e.g., chidvenCHICKEN), non-adjacent TL (e.g., ckichen-CHICKEN), and non-adjacent substitution (e.g., cticfen-CHICKEN). Replicating the standard TL priming effects, targets preceded by TL primes elicited smaller amplitude negativities and faster responses than those preceded by substitution primes overall. This indicates some degree of flexibility in the associations between letters and their positions within words. More flexible (i.e., less precise) representations are thought to be more susceptible to activation by TL primes, resulting in larger TL priming effects. However, the size of the TL priming effects was virtually identical between groups. Moreover, the ERP effects were shifted in time such that the adjacent TL priming effect arose earlier than the non-adjacent TL priming effect in both groups. These results suggest that phonological tuning is not required to represent orthographic information in a precise manner.

【 授权许可】

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