Effects of Ethyl Alcohol on the Contralateral and Ipsilateral Acoustic Reflex Threshold

1979 ◽  
Vol 22 (2) ◽  
pp. 289-294 ◽  
Author(s):  
Edward N. Cohill ◽  
Herbert J. Greenberg
Keyword(s):  
Linear Relationship ◽  
Blood Alcohol Concentration ◽  
Alcohol Concentration ◽  
Alcohol Solution ◽  
Blood Alcohol ◽  
Acoustic Reflex ◽  
Frequency Effects ◽  
Reflex Threshold ◽  
Pure Tones ◽  
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.

The Relationship between Magnitude of Hearing Loss and Acoustic Reflex Threshold Levels

1981 ◽  
Vol 46 (3) ◽  
pp. 312-316 ◽  
Author(s):  
Shlomo Silman ◽  
Stanley A. Gelfand
Keyword(s):  
Hearing Loss ◽  
Test Frequency ◽  
Acoustic Reflex ◽  
Threshold Levels ◽  
Reflex Responses ◽  
Reflex Threshold ◽  
Pure Tones ◽  
Acoustic Reflex Threshold ◽  
The Relationship

The acoustic reflex threshold (ART) was studied in 544 ears having hearing levels (ANSI-1969) ranging from 0 to 110 dB HL. The activating signals were pure tones (500, 1000, and 2000 Hz) presented at levels up to 125 dB HL. The results indicated that the ART increased with hearing loss beyond certain levels. The proportion of absence of reflex responses depends upon the degree of hearing loss, test frequency, and the limits imposed by the instrumentation. Absence of reflex responses is rare for hearing losses of less than about 80 dB HL when the hearing loss is attributable to cochlear involvement.

Clinical Acoustic Reflex Threshold Measurements in Infants

1977 ◽  
Vol 42 (4) ◽  
pp. 514-519 ◽  
Author(s):  
Dennis A. Abahazi ◽  
Herbert J. Greenberg
Keyword(s):  
White Noise ◽  
Acoustic Impedance ◽  
Acoustic Reflex ◽  
Auditory Thresholds ◽  
Low Pass ◽  
Reflex Threshold ◽  
Pure Tones ◽  
One Year ◽  
Acoustic Reflex Threshold ◽  
High Pass

Acoustic reflex thresholds elicited using clinical acoustic impedance techniques were obtained on normal infants between one month and one year of age. Reflex activating signals of 500, 1000, 2000 Hz, low-pass, high-pass, and white noise were used. Less intensity was required to elicit the acoustic reflex to the noise than to the pure tones, with the 500-Hz tone requiring the greatest intensity. Inference of auditory thresholds from the acoustic reflex indicated the presence of normal hearing in the infant group.

The Importance of Alcohol Testing by Gas Chromatography vs the Cordebard Classical Method Modified in the Medico Legal Investigation

2018 ◽  
Vol 69 (9) ◽  
pp. 2407-2410
Author(s):  
Dan Perju Dumbrava ◽  
Carmen Corina Radu ◽  
Sofia David ◽  
Tatiana Iov ◽  
Catalin Jan Iov ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Chromatographic Method ◽  
Classical Method ◽  
Blood Alcohol Concentration ◽  
Alcohol Concentration ◽  
Blood Alcohol ◽  
Technical Details ◽  
Gas Chromatographic Method ◽  
Alcohol Testing ◽  
Living Person

Considering the growing number of requests from the criminal investigations authorities addressed to the institutions of legal medicine, testing of blood alcohol concentration both in the living person and in the corpse, we believe that a presentation of the two methods which are used in our country, is a topic of interest at present. The purpose of this article is to provide the reader with the technical details on how blodd alcohol concentration is realised by means of the gas chromatographic method and the classical one, (Cordebard modified by D. Banciu and I. Droc) respectively. Another purpose of this article is to also show, in a comparative way, the elements that make the gas chromatographic method superior to the former one.

Effects of Alcohol on the Acoustic Reflex Threshold

2008 ◽  
Vol 4 (1) ◽  
pp. 48-51
Author(s):  
Mee-Hye Park ◽  
Hyun-Woo Kyun ◽  
Boo-Eem Kim
Keyword(s):  
Acoustic Reflex ◽  
Reflex Threshold ◽  
Acoustic Reflex Threshold

A Driving Simulator Study of the Performance Effects of Low Blood Alcohol Concentration

1996 ◽  
Vol 40 (18) ◽  
pp. 943-946 ◽  
Author(s):  
R. Wade Allen ◽  
Zareh Parseghian ◽  
Anthony C. Stein
Keyword(s):  
Divided Attention ◽  
Driving Simulator ◽  
Blood Alcohol Concentration ◽  
Large Body ◽  
Alcohol Concentration ◽  
Blood Alcohol ◽  
Performance Effects ◽  
Driving Task ◽  
Simulator Study ◽  
And Performance

There is a large body of research that documents the impairing effect of alcohol on driving behavior and performance. Some of the most significant alcohol influence seems to occur in divided attention situations when the driver must simultaneously attend to several aspects of the driving task. This paper describes a driving simulator study of the effect of a low alcohol dose, .055 BAC (blood alcohol concentration %/wt), on divided attention performance. The simulation was mechanized on a PC and presented visual and auditory feedback in a truck cab surround. Subjects were required to control speed and steering on a rural two lane road while attending to a peripheral secondary task. The subject population was composed of 33 heavy equipment operators who were tested during both placebo and drinking sessions. Multivariate Analysis of Variance showed a significant and practical alcohol effect on a range of variables in the divided attention driving task.

4. Are a Blood Alcohol Concentration of 256mg/dl and Minimal Signs of Impairment Reliable Indications of Alcohol Dependence?

1994 ◽  
Vol 34 (3) ◽  
pp. 265-270 ◽  
Author(s):  
A W Jones
Keyword(s):  
Expert Witness ◽  
Blood Alcohol Concentration ◽  
Drunk Driving ◽  
Alcohol Concentration ◽  
Driving Under The Influence ◽  
Blood Alcohol ◽  
Lower Court ◽  
Dna Profile ◽  
Court Of Appeals ◽  
Driving Scenario

This article describes a drink-driving scenario where a woman was apprehended for driving under the influence (DUI) with a blood alcohol concentration (BAC) of 256mg/dl1 The correctness of this result was vigorously challenged by a medical expert witness for the defence, who was actually a specialist in alcohol diseases. Despite reanalysis to confirm the BAC as well as a DNA profile to prove the identity of the blood specimen, the woman was acquitted of the charge of drunk driving by the lower court. However, she was subsequently found guilty in the High Court of Appeals with a unanimous decision and sentenced to four weeks imprisonment. This case report illustrates some of the problems surrounding the use of expert medical evidence by the defence to challenge the validity of the prosecution evidence based solely on a suspect's BAC. In situations such as these, an expert witness should be called by the prosecution to clarify and, if necessary, rebut medical and/or scientific opinions that might mislead the court and influence the outcome of the trial.

A Review of Alcohol-Impaired Driving: The Role of Blood Alcohol Concentration and Complexity of the Driving Task

2013 ◽  
Vol 58 (5) ◽  
pp. 1238-1250 ◽  
Author(s):  
Teri L. Martin ◽  
Patricia A. M. Solbeck ◽  
Daryl J. Mayers ◽  
Robert M. Langille ◽  
Yvona Buczek ◽  
...  
Keyword(s):  
Blood Alcohol Concentration ◽  
Alcohol Concentration ◽  
Blood Alcohol ◽  
Impaired Driving ◽  
Alcohol Impaired Driving ◽  
Driving Task

scholarly journals Drinking behaviours and blood alcohol concentration in four European drinking environments: a cross-sectional study

2011 ◽  
Vol 11 (1) ◽  
Author(s):  
Karen Hughes ◽  
Zara Quigg ◽  
Mark A Bellis ◽  
Ninette van Hasselt ◽  
Amador Calafat ◽  
...  
Keyword(s):  
Blood Alcohol Concentration ◽  
Cross Sectional Study ◽  
Alcohol Concentration ◽  
Blood Alcohol ◽  
Sectional Study ◽  
Cross Sectional

Some effects of signal bandwidth and spectral density on the acoustic‐reflex threshold in the elderly

1989 ◽  
Vol 86 (5) ◽  
pp. 1783-1789 ◽  
Author(s):  
John J. Jakimetz ◽  
Shlomo Silman ◽  
Maurice H. Miller ◽  
Carol Ann Silverman
Keyword(s):  
Spectral Density ◽  
The Elderly ◽  
Acoustic Reflex ◽  
Reflex Threshold ◽  
Acoustic Reflex Threshold
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