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Karen J. Mathewson
McMaster University
Vagal toneDevelopmental psychologyPsychologyLow birth weightBirth weight
33Publications
13H-index
643Citations
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Publications 35
Newest
#1Karen J. Mathewson (McMaster University)H-Index: 13
#2Daphne Mauer (McMaster University)H-Index: 51
Last. Louis A. Schmidt (McMaster University)H-Index: 46
view all 6 authors...
Source
#1Yuhong YuanH-Index: 23
#2M. Khawar AliH-Index: 1
Last. Lijun LiuH-Index: 1
view all 15 authors...
Abnormal colonic motility may be associated with dysfunction of the autonomic nervous system. Our aim was to evaluate if associations between colonic motor patterns and autonomic neural activity could be demonstrated by assessing changes in heart rate variability (HRV) in healthy volunteers. A total of 145 colonic motor patterns were assessed in 11 healthy volunteers by High-Resolution Colonic Manometry using an 84-channel water-perfused catheter. Motor patterns were evoked by balloon distention...
1 CitationsSource
#1Calan Savoy (McMaster University)H-Index: 3
#2Karen J. Mathewson (McMaster University)H-Index: 13
Last. Ryan J. Van Lieshout (McMaster University)H-Index: 20
view all 7 authors...
AbstractPurpose/aim: Antenatal corticosteroid (ACS) therapy has dramatically increased survival rates among extremely low birth weight (ELBW) infants. However, the long-term effects of ACS on autonomic nervous system function have not been explored. Using the world’s oldest longitudinally followed cohort of ELBW infants we compared respiratory sinus arrhythmia (RSA) among ELBW survivors whose mothers received ACS (ELBW-S), those who did not (ELBW-NS) and normal birth weight (NBW) controls in the...
1 CitationsSource
Abstract. Resting respiratory sinus arrhythmia (RSA) is related to individual differences in waking affective style and self-regulation. However, little is known about the stability of RSA between sleep/wake stages or the relations between RSA during sleep and waking affective style. We examined resting RSA in 25 healthy undergraduates during the waking state and one night of sleep. Stability of cardiac variables across sleep/wake states was highly reliable within participants. As predicted, gre...
Source
#1Ryan J. Van Lieshout (McMaster University)H-Index: 20
#2Mark A. Ferro (UW: University of Waterloo)H-Index: 17
Last. Karen J. Mathewson (McMaster University)H-Index: 13
view all 7 authors...
3 CitationsSource
Abstract. Despite the burgeoning use of respiratory sinus arrhythmia (RSA), heart period (HP), and blood pressure (BP) to study individual differences in autonomic regulatory processes in young adults, few studies have examined the short-term reliability of such autonomic measures in emerging adulthood. If resting autonomic measures indeed reflect “trait-like” individual differences, they should have acceptable levels of test-retest reliability. We examined the 1-month test-retest reliability of...
1 CitationsSource
#1Jan D. Huizinga (McMaster University)H-Index: 50
#2Karen J. Mathewson (McMaster University)H-Index: 13
Last. Ji-Hong Chen (McMaster University)H-Index: 11
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1 CitationsSource
#1Yuhong Yuan (McMaster University)H-Index: 23
#2Ji-Hong Chen (McMaster University)H-Index: 11
Last. Jan D. Huizinga (McMaster University)H-Index: 50
view all 9 authors...
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#1Ayelet Lahat (McMaster University)H-Index: 11
#2Ryan J. Van Lieshout (McMaster University)H-Index: 20
Last. Louis A. Schmidt (McMaster University)H-Index: 46
view all 8 authors...
Extremely low birth weight (ELBW; <1000 g) infants have been exposed to stressful intrauterine and early postnatal environments. Even greater early adversity has been experienced by ELBW survivors who were also born small for gestational age (SGA; <10th percentile for GA) compared to those born appropriate for GA (AGA). ELBW survivors, particularly those born SGA, face increased risk for internalizing problems compared to normal BW (NBW; ≥2500 g) controls. Internalizing problems are related to a...
4 CitationsSource
#1Calan Savoy (McMaster University)H-Index: 3
#2Karen J. Mathewson (McMaster University)H-Index: 13
Last. Ryan J. Van Lieshout (McMaster University)H-Index: 20
view all 6 authors...
Introduction The long allele of the DRD4 gene can confer different behavioral and emotional phenotypes depending upon environmental exposure, although the physiological changes underlying these phenotypes are not fully known. We sought to extend this work by assessing the interaction of the DRD4 gene and exposure to perinatal adversity (indexed by extremely low birth weight [ELBW]) on resting respiratory sinus arrhythmia (RSA), a neurophysiological measure of emotion regulation, in adulthood. Me...
1 CitationsSource
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