Volume 23, Issue 6 e12976
SHORT REPORT

Infants of mothers with higher physiological stress show alterations in brain function

Sonya V. Troller-Renfree

Sonya V. Troller-Renfree

Teachers College, Columbia University, New York, NY, USA

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Natalie H. Brito

Natalie H. Brito

New York University, New York, NY, USA

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Pooja M. Desai

Pooja M. Desai

Teachers College, Columbia University, New York, NY, USA

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Ana G. Leon-Santos

Ana G. Leon-Santos

NORC at the University of Chicago, Bethesda, MD, USA

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Cynthia A. Wiltshire

Cynthia A. Wiltshire

Teachers College, Columbia University, New York, NY, USA

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Summer N. Motton

Summer N. Motton

Teachers College, Columbia University, New York, NY, USA

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Jerrold S. Meyer

Jerrold S. Meyer

University of Massachusetts, Amherst, MA, USA

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Joseph Isler

Joseph Isler

Columbia University Medical Center, New York, NY, USA

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William P. Fifer

William P. Fifer

Columbia University Medical Center, New York, NY, USA

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Kimberly G. Noble

Corresponding Author

Kimberly G. Noble

Teachers College, Columbia University, New York, NY, USA

Correspondence

Kimberly G. Noble, Teachers College, Columbia University, New York, NY 10027, USA.

Email: [email protected]

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First published: 23 April 2020
Citations: 34

Abstract

Chronic stress has been increasingly linked with aberrations in children's behavioral, cognitive, and social development, yet the effect of chronic physiological stress on neural development during the first year of life is largely unknown. The present study aims to link a physiological index of chronic stress (maternal hair cortisol concentration) to maturational differences in infant functional brain development during the first year of life. Participants were 94 mother-infant dyads. To index chronic physiological stress, maternal hair samples were assayed for the previous three months’ cortisol output. To examine the development of brain function during the first year of life, six-to-twelve-month-old infants (N = 94) completed a resting electroencephalography (EEG) recording. Infants of mothers with evidence of higher physiological stress showed increased relative low-frequency (theta) power and reduced relative high-frequency (alpha, high-gamma) power, compared to infants of mothers with evidence of low physiological stress. This pattern of findings is consistent with other studies suggesting that early life stress may lead to alterations in patterns of infant brain development. These findings are important given that maturational lags in brain development can be long-lasting and are associated with deficits in cognitive and emotional development. The present research also suggests that reducing maternal physiological stress may be a useful target for future interventions aiming to foster neurodevelopment during the first year of life.

CONFLICT OF INTEREST

The authors declare no competing financial interests.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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