Individual Differences in Motor Development during Early Childhood: An MEG Study

Autor/inn/en	Johnson, Blake; Jobst, Cecilia; Al-Loos, Rita; He, Wei; Cheyne, Douglas
Titel	Individual Differences in Motor Development during Early Childhood: An MEG Study
Quelle	In: Developmental Science, 23 (2020) 5, (15 Seiten) PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Johnson, Blake) ORCID (Cheyne, Douglas)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1467-7687
DOI	10.1111/desc.12935
Schlagwörter	Psychomotor Skills; Brain Hemisphere Functions; Preschool Children; Diagnostic Tests; Motor Reactions; Adults; Comparative Analysis; Elementary School Students; Task Analysis; Child Development; Case Studies; Age Differences; Longitudinal Studies; Maturity (Individuals); Individual Differences; Developmental Stages + Suchen Sie Ihr Suchwort? Psychomotorische Aktivität; Pre-school age; Preschool age; Child; Children; Pre-school education; Preschool education; Vorschulalter; Kind; Kinder; Vorschulkind; Vorschulkinder; Vorschulerziehung; Vorschule; Diagnostic test; Diagnostischer Test; Aufgabenanalyse; Kindesentwicklung; Case study; Fallstudie; Case Study; Age; Difference; Age difference; Altersunterschied; Longitudinal study; Longitudinal method; Longitudinal methods; Längsschnittuntersuchung; Reifung; Individueller Unterschied
Abstract	In a previous study, we reported the first measurements of pre-movement and sensorimotor cortex activity in preschool age children (ages 3-5 years) using a customized pediatric magnetoencephalographic system. Movement-related activity in the sensorimotor cortex differed from that typically observed in adults, suggesting that maturation of cortical motor networks was still incomplete by late preschool age. Here we compare these earlier results to a group of school age children (ages 6-8 years) including seven children from the original study measured again two years later, and a group of adults (mean age 31.1 years) performing the same task. Differences in movement-related brain activity were observed both longitudinally within children in which repeated measurements were made, and cross-sectionally between preschool age children, school age children, and adults. Movement-related mu (8-12 Hz) and beta (15-30 Hz) oscillations demonstrated linear increases in amplitude and mean frequency with age. In contrast, movement-evoked gamma synchronization demonstrated a step-like transition from low (30-50 Hz) to high (70-90 Hz) narrow-band oscillations, and this occurred at different ages in different children. Notably, pre-movement activity ('readiness fields') observed in adults was absent in even the oldest children. These are the first direct observations of brain activity accompanying motor responses throughout early childhood, confirming that maturation of this activity is still incomplete by mid-childhood. In addition, individual children demonstrated markedly different developmental trajectories in movement-related brain activity, suggesting that individual differences need to be taken into account when studying motor development across age groups. (As Provided).
Anmerkungen	Wiley. Available from: John Wiley & Sons, Inc. 111 River Street, Hoboken, NJ 07030. Tel: 800-835-6770; e-mail: cs-journals@wiley.com; Web site: https://www.wiley.com/en-us
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01