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RECORD NUMBER: 42 OF 59

OLS Field Name OLS Field Data
Main Title Neuroelectrical Correlates of Categorical Perception for Place of Articulation in Normal and Lead-Treated Rhesus Monkeys.
Author Molfese, D. L. ; Laughlin, N. K. ; Morse, P. A. ; Linnville, S. E. ; Wetzel, W. F. ;
CORP Author Southern Illinois Univ. at Carbondale. ;Wisconsin Univ.-Madison.;Health Effects Research Lab., Research Triangle Park, NC.
Year Published 1986
Report Number EPA/600/J-86/386;
Stock Number PB87-212551
Additional Subjects Toxicology ; Lead(Metal) ; Electrophysiology ; Monkeys ; Laboratory animals ; Reprints ; Neurophysiology ; Evoked responses
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB87-212551 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 19p
Abstract
Categorical perception of place of articulation contrasts was evaluated in rhesus monkeys. The monkeys had been chronically exposed to subclinical levels of lead, either from conception to birth, or for approximately 6 months beginning at birth, or were never exposed to lead. Auditory evoked responses were recorded from scalp electrodes placed over left and right hemispheres during stimulus presentation. The brain responses recorded from the right hemispheres of the normal control group of monkeys discriminated between the categories of (dae) and (gae). Categorical discriminations were also noted for monkeys exposed to lead either prenatally or postnatally. These discriminations, in contrast, were found over only the left hemisphere. In additions, postnatal exposure resulted in categorical discrimination associated with slower latency components, suggesting a less mature pattern than that obtained for prenatally exposed monkeys.