Biomedical subjects

E N Cohill

Publications and source records attributed to E N Cohill.

3 recordsLinked to original sources

PubMed1979

Effects of ethyl alcohol on the contralateral and ipsilateral acoustic reflex threshold.

Contralateral and ipsilateral acoustic reflex thresholds were measured in response to 500-, 1000-, and 2000-Hz pure tones after the ingestion of a 50% alcohol solution. Acoustic reflex threshold measurements were obtained preingestion and at blood-alcohol concentrations of 0.03 to 0.10% in 0.01% increments. A linear relationship existed between acoustic reflex threshold and blood-alcohol concentration, with the greatest shift at 0.10% being 11 dB for contralateral stimulation and 7 dB for ipsilateral. No frequency effects were found. Results can be explained by the anatomical differences in the contralateral and ipsilateral pathways.

Adult↗

PubMedDate not supplied

Acoustic reflex thresholds using conventional and tracking methods.

Relationship between acoustic reflex thresholds obtained using conventional and tracking procedures was investigated. In the tracking method, the intensity of the stimulus from a self-recording audiometer is adjusted by the experimenter to bracket the acoustic reflex threshold as visually observed on the meter of an acoustic impedance measuring device. Acoustic reflex thresholds were obtained to pure tones of 500, 1000, and 4000 Hz. High correlations and no significant differences were obtained between the two threshold methods. It was concluded that the tracking method which allows easier control of stimulus parameters and response recording can provide acoustic reflex threshold data similar to those obtained using a conventional method.

Audiometry↗

PubMedDate not supplied

Effects of ethyl alcohol on the acoustic reflex threshold.

Acoustic reflex thresholds for pure tones and white nose were measured every 20 min for 4 hr after the ingestion of ethyl alcohol. The average maximum acoustic reflex threshold shift was 11 dB, occurring on the average at 100 min, and returning to base-line levesl at approximately 200 min postingestion. These data lend support to the classification of ethyl alcohol as a sedative, and should caution the clinician when interpreting acoustic reflex threshold data from persons who have ingested small amounts of alcohol.

Adult↗