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J Autism Dev Disord. 2017 Aug;47(8):2434-2442. doi: 10.1007/s10803-017-3167-4.

Differing Developmental Trajectories in Heart Rate Responses to Speech Stimuli in Infants at High and Low Risk for Autism Spectrum Disorder.

Author information

1
Boston Children's Hospital, Harvard Medical School, 1 Autumn St., 6th Floor, Boston, MA, 02215, USA. Katherine.Perdue@childrens.harvard.edu.
2
Boston Children's Hospital, 1 Autumn St., 6th Floor, Boston, MA, 02215, USA.
3
Boston University, 100 Cummington Mall, Room 170D, Boston, MA, 02215, USA.
4
Harvard University, Boston Children's Hospital, 1 Autumn St., 6th Floor, Boston, MA, 02215, USA.

Abstract

We investigated heart rate (HR) in infants at 3, 6, 9, and 12 months of age, at high (HRA) and low (LRC) familial risk for ASD, to identify potential endophenotypes of ASD risk related to attentional responses. HR was extracted from functional near-infrared spectroscopy recordings while infants listened to speech stimuli. Longitudinal analysis revealed that HRA infants and males generally had lower baseline HR than LRC infants and females. HRA infants showed decreased HR responses to early trials over development, while LRC infants showed increased responses. These findings suggest altered developmental trajectories in physiological responses to speech stimuli over the first year of life, with HRA infants showing less social orienting over time.

KEYWORDS:

Auditory processing; Autism spectrum disorders; Endophenotype; Heart rate; Infancy

PMID:
28516424
DOI:
10.1007/s10803-017-3167-4
[Indexed for MEDLINE]

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