Smoking during pregnancy affects speech-processing ability in newborn infants
Open accessAbstract
BACKGROUND: Tobacco smoking during pregnancy is known to adversely affect development of the central nervous system in babies of smoking mothers by restricting utero-placental blood flow and the amount of oxygen available to the fetus. Behavioral data associate maternal smoking with lower verbal scores and poorer performance on specific language/auditory tests. OBJECTIVES: In the current study we examined the effects of maternal smoking during pregnancy on newborns' speech processing ability as measured by event-related potentials (ERPs). METHOD: High-density ERPs were recorded within 48 hr of birth in healthy newborn infants of smoking (n = 8) and nonsmoking (n = 8) mothers. Participating infants were matched on sex, gestational age, birth weight, Apgar scores, mother's education, and family income. Smoking during pregnancy was determined by parental self-report and medical records. ERPs were recorded in response to six consonant-vowel syllables presented in random order with equal probability. RESULTS: Brainwaves of babies of nonsmoking mothers were characterized by typical hemisphere asymmetries, with larger amplitudes over the left hemisphere, especially over temporal regions. Further, infants of nonsmokers discriminated among a greater number of syllables whereas the newborns of smokers began the discrimination process at least 150 msec later and differentiated among fewer stimuli. CONCLUSIONS: Our findings indicate that prenatal exposure to tobacco smoke in otherwise healthy babies is linked with significant changes in brain physiology associated with basic perceptual skills that could place the infant at risk for later developmental problems.
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Children exposed to tobacco smoke during gestation exhibit non-clinical deficits in various cognitive domains.
“A number of studies have also shown that children exposed to tobacco smoke during gestation exhibit non-clinical deficits in various cognitive domains [3, 8–10].”
From Impaired auditory discrimination learning following perinatal nicotine exposure or β2 nicotinic acetylcholine receptor subunit deletion (2012) · cites this paper as [8]
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- Authors
- Key, A. P. F., Ferguson, M., Molfese, D. L., Peach, K., Lehman, C., & Molfese, V. J.
- Affiliations
- Vanderbilt University (US)
- University of Louisville (US)
- Corresponding author
- Key, Alexandra P.F.
- ORCID
- Key, Alexandra P.F.
- Venue
- Environmental Health Perspectives
- Publisher
- American Chemical Society (ACS)
- Published
- 2006-11-28
- Volume
- 115
- Issue
- 4
- Pages
- 623-629
- ISSN
- 0091-6765 (ISSN-L)
- 1552-9924
- PMC
- PMC1852679
- OpenAlex
- W2091710265
- Cited by
- 78
- References
- 85
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 1 · 2023: 1 · 2022: 2 · 2021: 4 · 2020: 3 · 2019: 6 · 2018: 1 · 2017: 3 · 2016: 4 · 2015: 6 · 2014: 5 · 2013: 11 · 2012: 7
- FWCI
- 3.73
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- public-domain
- creativecommons.org/licenses/by/4.0/ (vor, 4049 d)
- Locations
- Environmental Health Perspectives (publishedVersion, public-domain)
- PubMed Central (publishedVersion, public-domain)
- PubMed (publishedVersion)
- Lincoln (University of Nebraska) (submittedVersion, public-domain)
- Funders
- U.S. Department of Health and Human Services
- U.S. Department of Education (R215K000023)
- National Institutes of Health
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01HD017860, HD 17860)
- Topics
- Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Prenatal Substance Exposure Effects
- Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Infant Development and Preterm Care
- Life Sciences › Neuroscience › Cognitive Neuroscience › Hearing Loss and Rehabilitation
- Keywords
- smoking during pregnancy, prenatal tobacco exposure, speech processing, neonates, event-related potentials, auditory discrimination, hemispheric lateralization, consonant-vowel syllables, infant brain development, language development
- MeSH terms
- Adult, Brain, Child Development, Evoked Potentials, Female, Humans, Infant, Newborn, Functional Laterality, Male, Pregnancy, Prenatal Exposure Delayed Effects, Smoking, Speech Perception, Matched-Pair Analysis
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