PMID- 29410292 OWN - NLM STAT- MEDLINE DCOM- 20190128 LR - 20190128 IS - 1873-3514 (Electronic) IS - 0028-3932 (Linking) VI - 111 DP - 2018 Mar TI - Hemispheric asymmetries in rapid temporal processing at age 7 predict subsequent phonemic decoding 2 years later: A longitudinal event-related potential (ERP) study. PG - 252-260 LID - S0028-3932(18)30041-1 [pii] LID - 10.1016/j.neuropsychologia.2018.01.035 [doi] AB - The asymmetric sampling in time hypothesis (AST) suggests that the left and right secondary auditory areas process auditory stimuli according to different sampling rates (Poeppel, 2003). We investigated whether asymmetries consistent with the AST are observable in children at age 7 and whether they become more pronounced at age 9. Data were collected from 50 children who attended a 2-day research program at age 7 and were followed up 2 years later. At both time points, children were presented with tone-pairs, each composed of two 50 ms, 1000 Hz, sinusoidal tones separated by inter-stimulus intervals (ISIs) of 25, 50, 100, or 200 ms. Stimuli were presented binaurally whilst the EEG was recorded. The Ta and Tb, which are components of the auditory event-related potential (ERP), were used as electrophysiological indices of auditory processing. There was no significant effect of age on Ta or Tb responses. Tb responses to the second tone of tone-pairs indicated a left-hemisphere preference for rapidly presented stimuli (50 ms ISI) and a right hemisphere preference for more slowly presented stimuli (100 and 200 ms ISI). The results provide evidence that auditory areas of the left hemisphere preferentially respond to fast temporal rates, and those of the right hemisphere preferentially respond to slow temporal rates in children at age 7 and 9. In 7-year-old children, leftward lateralisation of responses to rapidly presented tones predicted better phonemic decoding ability 2 years later, which suggests that hemispheric specialisation may be a precursor for subsequent phonemic decoding skills. CI - Copyright (c) 2018 Elsevier Ltd. All rights reserved. FAU - Clunies-Ross, Karen L AU - Clunies-Ross KL AD - Neurocognitive Development Unit, School of Psychological Science, The University of Western Australia, M304, 35 Stirling Highway, Crawley, Perth, Western Australia 6009, Australia. Electronic address: Karen.clunies.ross@graduate.uwa.edu.au. FAU - Campbell, Catherine AU - Campbell C AD - Neurocognitive Development Unit, School of Psychological Science, The University of Western Australia, M304, 35 Stirling Highway, Crawley, Perth, Western Australia 6009, Australia. FAU - Ohan, Jeneva L AU - Ohan JL AD - Neurocognitive Development Unit, School of Psychological Science, The University of Western Australia, M304, 35 Stirling Highway, Crawley, Perth, Western Australia 6009, Australia. FAU - Anderson, Mike AU - Anderson M AD - Neurocognitive Development Unit, School of Psychological Science, The University of Western Australia, M304, 35 Stirling Highway, Crawley, Perth, Western Australia 6009, Australia. FAU - Reid, Corinne AU - Reid C AD - Neurocognitive Development Unit, School of Psychological Science, The University of Western Australia, M304, 35 Stirling Highway, Crawley, Perth, Western Australia 6009, Australia. FAU - Fox, Allison M AU - Fox AM AD - Neurocognitive Development Unit, School of Psychological Science, The University of Western Australia, M304, 35 Stirling Highway, Crawley, Perth, Western Australia 6009, Australia. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180220 PL - England TA - Neuropsychologia JT - Neuropsychologia JID - 0020713 SB - IM MH - Auditory Perception/*physiology MH - Brain/*growth & development/*physiology MH - Child MH - Child Language MH - Evoked Potentials, Auditory/physiology MH - Female MH - Functional Laterality/*physiology MH - Humans MH - Male MH - *Phonetics MH - Time Perception/*physiology OTO - NOTNLM OT - Asymmetric sampling in time OT - Auditory processing OT - Children OT - Event-related potential OT - Hemispheric asymmetry OT - Phonemic decoding OT - Tb OT - Temporal integration EDAT- 2018/02/08 06:00 MHDA- 2019/01/29 06:00 CRDT- 2018/02/08 06:00 PHST- 2017/01/18 00:00 [received] PHST- 2018/01/23 00:00 [revised] PHST- 2018/01/24 00:00 [accepted] PHST- 2018/02/08 06:00 [pubmed] PHST- 2019/01/29 06:00 [medline] PHST- 2018/02/08 06:00 [entrez] AID - S0028-3932(18)30041-1 [pii] AID - 10.1016/j.neuropsychologia.2018.01.035 [doi] PST - ppublish SO - Neuropsychologia. 2018 Mar;111:252-260. doi: 10.1016/j.neuropsychologia.2018.01.035. Epub 2018 Feb 20.