scholarly journals The minimum intensity of a mixed exposure that increases the risk of an outcome

2020 ◽  
Vol 39 (27) ◽  
pp. 4016-4024
Author(s):  
Ionut Bebu ◽  
Barbara H. Braffett ◽  
John M. Lachin
Keyword(s):  
Mixed Exposure ◽  
Minimum Intensity

Reliability of the Minimum Masking Level as Outcome Variable in Tinnitus Clinical Research

2020 ◽  
Vol 29 (3) ◽  
pp. 429-435
Author(s):  
Patricia C. Mancini ◽  
Richard S. Tyler ◽  
Hyung Jin Jun ◽  
Tang-Chuan Wang ◽  
Helena Ji ◽  
...  
Keyword(s):  
Standard Deviation ◽  
High Frequency ◽  
Pearson Correlation ◽  
Correlation Coefficients ◽  
Outcome Variable ◽  
Reliable Estimate ◽  
Moderate Correlation ◽  
Trained Subjects ◽  
The Relationship ◽  
Minimum Intensity

Purpose The minimum masking level (MML) is the minimum intensity of a stimulus required to just totally mask the tinnitus. Treatments aimed at reducing the tinnitus itself should attempt to measure the magnitude of the tinnitus. The objective of this study was to evaluate the reliability of the MML. Method Sample consisted of 59 tinnitus patients who reported stable tinnitus. We obtained MML measures on two visits, separated by about 2–3 weeks. We used two noise types: speech-shaped noise and high-frequency emphasis noise. We also investigated the relationship between the MML and tinnitus loudness estimates and the Tinnitus Handicap Questionnaire (THQ). Results There were differences across the different noise types. The within-session standard deviation averaged across subjects varied between 1.3 and 1.8 dB. Across the two sessions, the Pearson correlation coefficients, range was r = .84. There was a weak relationship between the dB SL MML and loudness, and between the MML and the THQ. A moderate correlation ( r = .44) was found between the THQ and loudness estimates. Conclusions We conclude that the dB SL MML can be a reliable estimate of tinnitus magnitude, with expected standard deviations in trained subjects of about 1.5 dB. It appears that the dB SL MML and loudness estimates are not closely related.

scholarly journals Single and mixed exposure to cadmium and mercury in Drosophila melanogaster: Molecular responses and impact on post-embryonic development

2021 ◽  
Vol 220 ◽  
pp. 112377
Author(s):  
Laëtitia Frat ◽  
Thomas Chertemps ◽  
Élise Pesce ◽  
Françoise Bozzolan ◽  
Matthieu Dacher ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Embryonic Development ◽  
Molecular Responses ◽  
Mixed Exposure

Study of oxidative stress related responses induced in Arabidopsis thaliana following mixed exposure to uranium and cadmium

2010 ◽  
Vol 48 (10-11) ◽  
pp. 879-886 ◽  
Author(s):  
Nathalie Vanhoudt ◽  
Hildegarde Vandenhove ◽  
Nele Horemans ◽  
Jean Wannijn ◽  
Andelko Bujanic ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Arabidopsis Thaliana ◽  
Mixed Exposure

scholarly journals Value of minimum intensity projections for chest CT in COVID-19 patients

2021 ◽  
Vol 135 ◽  
pp. 109478
Author(s):  
Christian Booz ◽  
Thomas J. Vogl ◽  
U. Joseph Schoepf ◽  
Damiano Caruso ◽  
Maria Cristina Inserra ◽  
...  
Keyword(s):  
Chest Ct ◽  
Minimum Intensity ◽  
Minimum Intensity Projections

scholarly journals Low-frequency oscillations in human tibial somatosensory evoked potentials

2006 ◽  
Vol 64 (2b) ◽  
pp. 402-406 ◽  
Author(s):  
Carlos Julio Tierra-Criollo ◽  
Antonio Fernando Catelli Infantosi
Keyword(s):  
Evoked Potential ◽  
Low Frequency ◽  
Electric Activity ◽  
Relative Power ◽  
Eeg Signals ◽  
Time Frequency ◽  
Low Frequency Oscillations ◽  
Current Pulses ◽  
Stimulus Artifact ◽  
Minimum Intensity

Oscillatory cerebral electric activity has been related to sensorial and perceptual-cognitive functions. The aim of this work is to investigate low frequency oscillations (<300 Hz), particularly within the gamma band (30-110 Hz), during tibial stimulation. Twenty-one volunteers were subjected to 5 Hz stimulation by current pulses of 0.2 ms duration and the minimum intensity to provoke involuntary twitch. EEG signals without (spontaneously) and during stimulation were recorded at primary somatosensory area. A time-frequency analysis indicated the effect of the stimulus artifact in the somatosensory evoked potential (SEP) frequencies up to 5 ms after the stimulus. The oscillations up to 100 Hz presented the highest relative power contribution (approximately 99%) for the SEP and showed difference (p<0.01) from the frequencies of the spontaneously EEG average. Moreover, the range 30-58 Hz was identified as the band with the highest contribution for the tibial SEP morphology (p<0.0001).

scholarly journals The Relationship of Liver Function Tests to Mixed Exposure to Lead and Organic Solvents

2013 ◽  
Vol 25 (1) ◽  
pp. 5 ◽  
Author(s):  
Won-Joon Chang ◽  
Kyu-Tak Joe ◽  
Hye-Young Park ◽  
Jong-Do Jeong ◽  
Duk-Hee Lee
Keyword(s):  
Liver Function ◽  
Organic Solvents ◽  
Liver Function Tests ◽  
Function Tests ◽  
Relationship Of ◽  
The Relationship ◽  
Mixed Exposure
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