skip navigation


Register for Latest Research

Stay Informed
Register with NCJRS to receive NCJRS's biweekly e-newsletter JUSTINFO and additional periodic emails from NCJRS and the NCJRS federal sponsors that highlight the latest research published or sponsored by the Office of Justice Programs.

NCJRS Abstract

The document referenced below is part of the NCJRS Virtual Library collection. To conduct further searches of the collection, visit the Virtual Library. See the Obtain Documents page for direction on how to access resources online, via mail, through interlibrary loans, or in a local library.


NCJ Number: 170448 Find in a Library
Title: Microtremors During a Sustained Concentration Task from Boys Previously Exposed to Opiates In-Utero
Journal: Child & Adolescent Substance Abuse  Volume:7  Issue:2  Dated:(1997)  Pages:53-63
Author(s): J Spencer; P Suess; W Better; R I Herning
Date Published: 1997
Page Count: 11
Type: Report (Study/Research)
Format: Article
Language: English
Country: United States of America
Annotation: This study evaluates one common, early symptom of infants exposed to drugs: motor microtremors.
Abstract: Fourteen boys who were exposed to opiates in-utero maintained their index finger in a static, weight-forced position while attempting to maintain a stylus at a fix point producing intentional microtremors. After 2.5 minutes, significant increases in tremor were recorded in mean peak (6 Hz) amplitude while accuracy of sustaining this response was significantly reduced. Age matched boys (ages 7-12) who were raised in an environment in which drugs were used but were not directly exposed in-utero (lifestyle group N=13) or a standard control group (N=12), did not show similar changes over time. Resting or postural-extended tremor did differ among groups. Alcohol, marijuana, or tobacco use by the mother or birth weight of the child did not predict subsequent group differences in tremor. Both biological and environmental variables plus type and sensitivity of measurement used are critical elements for describing long-term, potential residual drug effects in children, especially as they relate to sustained attention. Table, figures, references
Main Term(s): Controlled Substances
Index Term(s): Adolescents at risk; Children of drug abusers; Drug effects; Drug research; Drug use; Environmental influences; Home environment; Pregnant drug abusers; Prenatal biological influences
Note: DCC
To cite this abstract, use the following link:

*A link to the full-text document is provided whenever possible. For documents not available online, a link to the publisher's website is provided. Tell us how you use the NCJRS Library and Abstracts Database - send us your feedback.