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Underwater hearing in the loggerhead turtle (Caretta ...
https://journals.biologists.com/jeb/article/215/17/3001/11025/Underwater-hearing-in-the-loggerhead-turtle
Hearing thresholds of juvenile and subadult loggerhead turtles measured by recording auditory brainstem responses elicited through vibrational clicks and tone bursts showed a hearing range from 250 to 1000 Hz with best sensitivity at 250 Hz, which was the lowest frequency tested ( Bartol et al., 1999 ).
Underwater hearing in the loggerhead turtle (Caretta ...
https://pubmed.ncbi.nlm.nih.gov/22875768/
The purpose of this study was to compare underwater behavioral and auditory evoked potential (AEP) audiograms in a single captive adult loggerhead sea turtle (Caretta caretta). The behavioral audiogram was collected using a go/no-go response procedure and a modified staircase method of threshold determination.
Underwater Hearing in Turtles - PubMed
https://pubmed.ncbi.nlm.nih.gov/26611091/
Because turtles hear best under water, it is important to examine their vulnerability to anthropogenic noise. However, the lack of basic data makes such experiments difficult because only a few species of turtles have published audiograms. There are also almost no behavioral data available (understandable due to training difficulties).
Underwater Hearing in the Loggerhead Turtle (Caretta ...
https://digitalcommons.usf.edu/cgi/viewcontent.cgi?referer=&httpsredir=1&article=4428&context=etd
testing. Current knowledge of marine turtle auditory abilities is based on a few electrophysiological tests. The purpose of this study was to collect and compare behavioral and auditory evoked potential audiograms in a captive adult loggerhead turtle (Caretta caretta). The behavioral audiogram was collected using a go/no-go modified
Underwater hearing sensitivity of the leatherback sea ...
https://www.nrc.gov/docs/ML1434/ML14345A571.pdf
Figure 2. Underwater audiogram for leatherback sea turtle hatchlings (Dermochelys coriacea) (n=11). Because we recorded auditory evoked potentials in response to three to five frequencies per individual (and not the entire frequency range detectable by leatherbacks) one audiogram is presented, representing the mean threshold (± 1 SD)
3.5 Sea Turtles
https://nwtteis.com/portals/nwtteis/files/final_seis/section/NWTT_Final_SEIS_Sept2020_3.05_Sea_Turtles.pdf
Using existing data on sea turtle hearing sensitivity, the U.S. Department of the Navy (Navy) developed a composite sea turtle audiogram for underwater hearing (Figure 3.5-3), as described in the technical report Criteria and Thresholds for U.S. Navy Acoustic and Explosive Effects Analysis (Phase III) U.S. Department of the Navy, 2017a). Source:
How to Read an Audiogram | Iowa Head and Neck …
https://medicine.uiowa.edu/iowaprotocols/how-read-audiogram
GENERAL: Audiograms are used to diagnose and monitor hearing loss. Audiograms are created by plotting the thresholds at which a patient can hear various frequencies. Hearing loss can be divided into two categories: conductive or sensorineural. The results of an audiogram can help direct medical and surgical interventions to improve and/or …
UNDERSTANDING AN AUDIOGRAM - nationaldeafcenter.org
https://www.nationaldeafcenter.org/sites/default/files/Understanding%20an%20Audiogram.pdf
Hz) calculated for the above audiogram is approximately 53 dB HL in each ear, a hearing loss in the moderate range. Degrees of hearing sensitivity include: normal (< 25 dB HL), mild (26 to 40 dB HL), moderate (41 to 55 dB HL), moderately-severe (56 to 70 dB HL), severe (71 to 90 dB HL), and profound (> 90 dB HL). Configuration of hearing loss
How to use Turtle Diagrams - IATF 16949 Store
https://16949store.com/articles/how-to-use-turtle-diagrams/
The Turtle Diagram is made up of 6 areas, all surrounding the process, which is considered the turtle body. The 6 areas are: inputs, materials & equipment (what), support processes, procedures & methods (how), outputs, competence skills & training (whom), and finally performance indicators (results).
How to Read an Audiogram and Determine Degrees of Hearing Loss
https://www.nationalhearingtest.org/wordpress/?p=786
Profound loss: 90 dB or more. The graph to the left represents a blank audiogram illustrates the degrees of hearing loss listed above. Frequency is plotted at the top of the graph, ranging from low frequencies (250 Hz) on the left to high frequencies (8000 Hz) on the right. Sound level, in dB, is plotted on the left side of the graph and ranges ...
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