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Alpha electroencephalogram (EEG) asymmetry among toddlers in foster care

Published online by Cambridge University Press:  11 January 2021

Kellyn N. Blaisdell*
Affiliation:
University of Oregon, Department of Psychology, OR, USA
Tyson V. Barker
Affiliation:
University of Oregon, Department of Psychology, OR, USA
Ryan J. Giuliano
Affiliation:
University of Manitoba, Department of Psychology. Winnipeg, Canada
Philip A. Fisher
Affiliation:
University of Oregon, Department of Psychology, OR, USA
*
Author for Correspondence: Kellyn N. Blaisdell, Department of Psychology, 1227 University of Oregon, Eugene, OR97403; E-mail: kblaisd2@uoregon.edu

Abstract

The majority of children living in foster care in the United States have a history of maltreatment and/or disrupted caregiving. Maltreatment in early childhood adversely affects development at many levels, including neurobiology and behavior. One neurobiological measure associated with maltreatment is alpha electroencephalogram (EEG) asymmetry. Prior research has found greater right frontal asymmetry among children with a history of maltreatment. However, little research has been extended developmentally downward to examine alpha asymmetry and its behavioral correlates among toddlers in foster care; this was the purpose of the present study. Differences in EEG asymmetry were examined between a sample of foster toddlers (mean age = 3.21 years, n = 38) and a community comparison, low-income sample without a history of foster care (mean age = 3.04 years, n = 16). The toddlers in the foster care group exhibited greater right alpha asymmetry, primarily driven by differences in parietal asymmetry. Neither frontal nor parietal asymmetry were clearly related to internalizing or externalizing behaviors, measured concurrently or at previous time points. These findings reveal differences in alpha EEG asymmetry among toddlers in foster care, and highlight the need to better understand associations between neurobiological and behavioral functioning following early adversity.

Type
Special Section 2: Early Adversity and Development: Contributions from the Field
Copyright
Copyright © Cambridge University Press 2020

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