PMID: 6407048Jan 1, 1983Paper

Prenatal diazepam exposure: effects on auditory temporal resolution in rats

Psychopharmacology
C K KelloggR K Miller

Abstract

The maturation of temporal acuity in the auditory system of the rat was evaluated following prenatal exposure to diazepam (DZ; 0, 2.5, 10 mg/kg to the dam on each of the last 8 days of gestation). Acuity was defined by the effectiveness of brief silent periods in white noise (gaps) as in inhibitors of an immediately subject acoustic startle reflex. In uninjected control rats the gaps became effective at 25-28 days of age, and onset was delayed in prenatally exposed animals according to dose. No DZ was present in the rat offspring at animals in adulthood (0, 0.5, 1.5, 4.5 mg/kg). These injections reduced the inhibitory effect of the gap on startle behavior in all animals, but less so in those previously exposed to DZ in utero. The threshold of temporal acuity in the rat approximates that found in humans and the function matures at the same relative rate in the two species. Further, administration of DZ in the adult human has the same effect on temporal acuity in the auditory system as it does in the adult rat. There are presently no data available on the effects on human auditory development of exposure to DZ in utero. The data we present have the importance of temporal acuity in the perception of speech and, thus, in the matura...Continue Reading

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Citations

Jan 1, 1983·American Journal of Industrial Medicine·R K Miller
Aug 22, 2007·Archives of Gynecology and Obstetrics·Sharmila J Menon
Jan 1, 1995·Experimental Neurology·H SchroederA Nehlig
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Jul 1, 1984·Drug and Alcohol Dependence·A W Chan
Oct 1, 1983·Teratology·R D SimmonsC K Kellogg
Mar 10, 2015·Behavioural Brain Research·Natalia RybalkoJosef Syka
Sep 7, 2016·Scientific Reports·Kristen A McLaurinCharles F Mactutus
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