brain sciences Article Consonant and Vowel Processing in Word Form Segmentation: An Infant ERP Study Katie Von Holzen 1,2,* ID , Leo-Lyuki Nishibayashi 1,3 and Thierry Nazzi 1,* 1 Laboratoire Psychologie de la Perception, CNRS–Université Paris Descartes, 75006 Paris, France;
[email protected] 2 Department of Hearing and Speech Sciences, University of Maryland, College Park, MD 20740, USA 3 Laboratory for Language Development, Riken Brain Science Institute, Wako-shi, Saitama-ken 351-0198, Japan * Correspondence:
[email protected] (K.V.H.);
[email protected] (T.N.) Received: 4 October 2017; Accepted: 25 January 2018; Published: 31 January 2018 Abstract: Segmentation skill and the preferential processing of consonants (C-bias) develop during the second half of the first year of life and it has been proposed that these facilitate language acquisition. We used Event-related brain potentials (ERPs) to investigate the neural bases of early word form segmentation, and of the early processing of onset consonants, medial vowels, and coda consonants, exploring how differences in these early skills might be related to later language outcomes. Our results with French-learning eight-month-old infants primarily support previous studies that found that the word familiarity effect in segmentation is developing from a positive to a negative polarity at this age. Although as a group infants exhibited an anterior-localized negative effect, inspection of individual results revealed that a majority of infants showed a negative-going response (Negative Responders), while a minority showed a positive-going response (Positive Responders). Furthermore, all infants demonstrated sensitivity to onset consonant mispronunciations, while Negative Responders demonstrated a lack of sensitivity to vowel mispronunciations, a developmental pattern similar to previous literature.