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. 2018 Dec;50(Pt B):113-139.
doi: 10.1016/j.dr.2018.06.002. Epub 2018 Sep 24.

Autonomic nervous system functioning assessed during the Still-Face Paradigm: A meta-analysis and systematic review of methods, approach and findings

Karen Jones-Mason  1 , Abbey Alkon  2 , Michael Coccia  1 , Nicole R Bush  1   3
Affiliations

Autonomic nervous system functioning assessed during the Still-Face Paradigm: A meta-analysis and systematic review of methods, approach and findings

Karen Jones-Mason et al. Dev Rev. 2018 Dec.

Abstract

Animal and human research suggests that the development of the autonomic nervous system (ANS) is particularly sensitive to early parenting experiences. The Still-Face Paradigm (SFP), one of the most widely used measures to assess infant reactivity and emotional competence, evokes infant self-regulatory responses to parental interaction and disengagement. This systematic review of 33 peer-reviewed studies identifies patterns of parasympathetic (PNS) and sympathetic (SNS) nervous system activity demonstrated by infants under one year of age during the SFP and describes findings within the context of sample demographic characteristics, study methodologies, and analyses conducted. A meta-analysis of a subset of 14 studies with sufficient available respiratory sinus arrhythmia (RSA) data examined whether the SFP reliably elicited PNS withdrawal (RSA decrease) during parental disengagement or PNS recovery (RSA increase) during reunion, and whether results differed by socioeconomic status (SES). Across SES, the meta-analysis confirmed that RSA decreased during the still-face episode and increased during reunion. When studies were stratified by SES, low-SES or high-risk groups also showed RSA decreases during the still face episode but failed to show an increase in RSA during reunion. Few studies have examined SNS activity during the SFP to date, preventing conclusions in that domain. The review also identified multiple qualifications to patterns of SFP ANS findings, including those that differed by ethnicity, infant sex, parental sensitivity, and genetics. Strengths and weaknesses in the extant research that may explain some of the variation in findings across the literature are also discussed, and suggestions for strengthening future research are provided.

Keywords: Autonomic Nervous System; Meta-analysis; Respiratory Sinus Arrhythmia; Still-Face Paradigm; Systematic Review.

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Figures

Figure 1.
Figure 1.
Flowchart
Figure 2.
Figure 2.
Change in RSA from play to still-face
Figure 3.
Figure 3.
RSA recovery in reunion episode
See this image and copyright information in PMC

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