| Main Title |
Acute Exposures to p-Xylene and Toluene Alter Visual Information Processing (Journal Version). |
| Author |
Dyer, R. S. ;
Bercegeay, M. S. ;
Mayo, L. M. ;
|
| CORP Author |
Health Effects Research Lab., Research Triangle Park, NC. |
| Publisher |
1988 |
| Year Published |
1988 |
| Report Number |
EPA/600/J-88/064; |
| Stock Number |
PB89-110365 |
| Additional Subjects |
Toxicity ;
Toluene ;
Xylenes ;
Amphetamines ;
Exposure ;
Respiration ;
Aromatic hydrocarbons ;
Laboratory animals ;
Arousal ;
Reprints ;
Visual cortex ;
Oral administration ;
Visual evoked potentials
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB89-110365 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
10p |
| Abstract |
Long-Evans hooded rats were exposed to single doses of toluene (p.o.) at 0, 250, 500 and 1000 mg/kg, to p-xylene (p.o.) at 0, 125, 250, 500, 1000 and 2000 mg/kg, and to inhalation of p-xylene for 4 hrs at 0, 800 or 1600 ppm. The functional integrity of the visual system was evaluated using flash-evoked potentials (FEPs). The data indicated a significant depression in amplitude of FEP peak N3 at 250 mg/kg and higher dosages of toluene and p-xylene. A similar depression in peak N3 amplitude was observed following inhalation exposure to 1600 ppm p-xylene. The effects produced by oral administration of 500 mg/kg p-xylene or toluene lasted at least 8 hr, while the effect of inhaled p-xylene dissipated within 75 min of removal from the exposure. FEP peak N3 is presumed to be related to arousal, such that increase in arousal from a relaxed state should decrease amplitude. Rats administered amphetamine in dosages of .6, 1.2 and 2.5 mg/kg (known to increase arousal) also had reduced N3 amplitude. The effects of p-xylene and toluene on FEPs, while indicative of altered processing of visual information, may be secondary to changes in arousal or excitability. |
| Supplementary Notes |
Pub. in Neurotoxicology and Teratology, v10 p147-153 1988. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Acute Exposures to p-Xylene and Toluene Alter Visual Information Processing (Journal Version). |
| Category Codes |
57Y; 57I; 57U; 44G; 68G |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/11 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
834424849 |
| Origin |
NTIS |
| Type |
CAT |
