john herr psychologist los gatos saratoga california

On Sabbatical

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TITLE: Infant regulation of the vagal "brake" predicts child behavior problems: a psychobiological model of social behavior.
AUTHOR: Porges SW; Doussard-Roosevelt JA; Portales AL; Greenspan SI
AUTHOR AFFILIATION: Institute for Child Study, University of Maryland, College Park 20742, USA. porges@umdd.umd.edu
SOURCE: Dev Psychobiol 1996 Dec;29(8):697-712
NLM CIT. ID: 97117426
ABSTRACT: Cardiac vagal tone is a construct that describes the functional relationship between the brainstem and the heart. Cardiac vagal tone is measured by quantifying the amplitude of respiratory sinus arrhythmia, a component of heart rate variability reflecting the functional output of vagal pathways on the heart. Although there is an extensive literature evaluating baseline vagal tone and its relation to behavior, the relation between individual differences in the ability to regulate cardiac vagal tone and behavior has been theoretically vague. This article introduces a theoretical model to explain the relation between vagal tone during steady states and vagal reactivity (i.e., the vagal brake) in response to environmental challenges. Based upon the proposed model, it was hypothesized that infants who had difficulties in regulating the vagal brake (i.e., decreasing cardiac vagal tone) during social/attention tasks would have difficulties developing appropriate social interactions requiring reciprocal engagement and disengagement strategies. Data from 24 infants are presented. The findings support the model and demonstrate that infants with difficulties in decreasing vagal tone during a social/attention task at 9 months of age had significantly more behavioral problems at 3 years of age.
MAIN MESH SUBJECTS: Brain Stem/*PHYSIOLOGY
*Child Behavior
Heart/*PHYSIOLOGY
*Social Behavior
Vagus Nerve/*PHYSIOLOGY
ADDITIONAL MESH SUBJECTS: Child, Preschool
Female
Heart Rate
Human
Infant
Male
Respiration/PHYSIOLOGY
Support, U.S. Gov't, P.H.S.
PUBLICATION TYPES: JOURNAL ARTICLE
LANGUAGE: Eng

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On Sabbatical!

When my office lease expired at the end of 2004, I decided to turn it into a "sabbatical" from my private practice. Many years ago, in my grandfather's 89th year of life, he told me, "John, it is important to smell the roses while you can still smell them." His life gave living a very good reputation. It is also true that the pursuit of that philosophy required my grandfather to to re-open his assay office/ore market in Wickenburg, Arizona as a 75-year-old because he had run a little short of retirement money. Thus, if blessed with his luck and health, I'll be back.. --jjh

Copyright 1998-2007  John J. Herr, Ph.D.                                   Please send comments to jjherr@clinicalpsychologist.com