scholarly journals Directional hearing sensitivity of the bottlenosed dolphin (Tursiops truncatus) in the vertical plane

1981 ◽  
Vol 70 (S1) ◽  
pp. S85-S85
Author(s):  
Patrick W. B. Moore ◽  
Whitlow L. Au
Keyword(s):  
Tursiops Truncatus ◽  
Vertical Plane ◽  
Directional Hearing ◽  
Hearing Sensitivity ◽  
Bottlenosed Dolphin

scholarly journals Directional hearing sensitivity for 2–30 kHz sounds in the bottlenose dolphin (Tursiops truncatus)

2020 ◽  
Vol 147 (1) ◽  
pp. 388-398 ◽  
Author(s):  
Alyssa W. Accomando ◽  
Jason Mulsow ◽  
Brian K. Branstetter ◽  
Carolyn E. Schlundt ◽  
James J. Finneran
Keyword(s):  
Bottlenose Dolphin ◽  
Tursiops Truncatus ◽  
Directional Hearing ◽  
Hearing Sensitivity

Directional hearing sensitivity for 2–30 kHz sounds in the bottlenose dolphin (Tursiops truncatus)

2018 ◽  
Vol 144 (3) ◽  
pp. 1741-1741
Author(s):  
Alyssa W. Accomando ◽  
Jason Mulsow ◽  
Brian K. Branstetter ◽  
James J. Finneran ◽  
Keith Jenkins
Keyword(s):  
Bottlenose Dolphin ◽  
Tursiops Truncatus ◽  
Directional Hearing ◽  
Hearing Sensitivity

Acoustics of Sound Production and of Hearing in the Bladder Cicada Cystosoma Saundersii (Westwood)

1978 ◽  
Vol 72 (1) ◽  
pp. 43-55 ◽  
Author(s):  
N.H. FLETCHER ◽  
K. G. HILL
Keyword(s):  
Sound Production ◽  
Abdominal Cavity ◽  
Low Frequency ◽  
Sound Intensity ◽  
Electrical Network ◽  
Directional Hearing ◽  
Hearing Sensitivity ◽  
Physical Mechanisms ◽  
Radiated Sound ◽  
Song Frequency

The male cicada of the species Cystosoma saundersii has a grossly enlarged, hollow abdomen and emits a loud calling song with a fundamental frequency of about 800 Hz. At the song frequency, its hearing is nondirectional. The female of C. saundersii lacks sound producing organs, has no enlargement of the abdomen, but possesses an abdominal air sac and has well developed directional hearing at the frequency of the species' song. Physical mechanisms are proposed that explain these observations in semi-quantitative detail using the standard method of electrical network analogues. The abdomen in the male, with its enclosed air, is found to act as a system resonant at the song frequency, thus contributing a large gain in radiated sound intensity. Coupling between this resonator and the auditory tympana accounts for the observed hearing sensitivity in the male, but destroys directionality. In the female, the abdominal cavity acts in association with the two auditory tympana as part of a phase shift network which results in appreciable directionality of hearing at the unusually low frequency of the male song.

scholarly journals Spermatozoa of the Atlantic bottlenosed dolphin, Tursiops truncatus

Reproduction ◽  
1981 ◽  
Vol 63 (2) ◽  
pp. 509-514 ◽  
Author(s):  
A. D. Fleming ◽  
R. Yanagimachi ◽  
H. Yanagimachi
Keyword(s):  
Tursiops Truncatus ◽  
Bottlenosed Dolphin

Measuring recovery from temporary threshold shifts with evoked auditory potentials in the bottlenosed dolphin Tursiops truncatus

2001 ◽  
Vol 110 (5) ◽  
pp. 2721-2721 ◽  
Author(s):  
Paul E Nachtigall ◽  
Alexendre Supin ◽  
Jeffrey L. Pawloski ◽  
Whitlow W. L. Au
Keyword(s):  
Tursiops Truncatus ◽  
Bottlenosed Dolphin

The Effects of Venting and Low-Frequency Gain Compensation on Performance in Noise with Directional Hearing Instruments

2006 ◽  
Vol 17 (03) ◽  
pp. 168-178 ◽  
Author(s):  
Melinda C. Freyaldenhoven ◽  
Patrick N. Plyler ◽  
James W. Thelin ◽  
Anna K. Nabelek ◽  
Samuel B. Burchfield
Keyword(s):  
Hearing Impairment ◽  
Hearing Aids ◽  
Low Frequency ◽  
Directional Hearing ◽  
Clinical Implications ◽  
Speech Understanding ◽  
Hearing Sensitivity ◽  
Speech Understanding In Noise ◽  
Hearing Instruments ◽  
Gain Compensation

The present study investigated the effects of gain compensation and venting on front-to-back ratios (FBRs), speech understanding in noise, and acceptance of noise in 19 listeners with hearing impairment utilizing directional hearing instruments. The participants were separated into two groups based on degree of low-frequency hearing sensitivity. Subjects were fitted binaurally with Starkey Axent II programmable behind-the-ear hearing aids and full-shell earmolds (select-a-vent). Results demonstrated that gain compensation and venting significantly affected FBRs for both groups; however, acceptance of noise was not significantly affected by gain compensation or venting for either group. Results further demonstrated that speech understanding in noise was unaffected by venting but may be improved with the use of gain compensation for some listeners. Clinical implications are discussed.

The uncertain response in the bottlenosed dolphin (Tursiops truncatus).

1995 ◽  
Vol 124 (4) ◽  
pp. 391-408 ◽  
Author(s):  
J. David Smith ◽  
Jonathan Schull ◽  
Jared Strote ◽  
Kelli McGee ◽  
Roian Egnor ◽  
...  
Keyword(s):  
Tursiops Truncatus ◽  
Bottlenosed Dolphin

scholarly journals Double-faced monster in the bottlenosed dolphin (Tursiops truncatus) found in the Mediterranean sea

2004 ◽  
Vol 154 (10) ◽  
pp. 306-308 ◽  
Author(s):  
W. Dabin ◽  
C. Cesarini ◽  
I. Clemenceau ◽  
F. Dhermain ◽  
T. Jauniaux ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Tursiops Truncatus ◽  
Bottlenosed Dolphin ◽  
The Mediterranean

Slow Process of Wound Repair in Beluga Whales, Delphinapterus leucas

1987 ◽  
Vol 44 (9) ◽  
pp. 1661-1665 ◽  
Author(s):  
J. R. Geraci ◽  
L. J. Bruce-Allen
Keyword(s):  
Tursiops Truncatus ◽  
Wound Repair ◽  
Epidermal Cells ◽  
Delphinapterus Leucas ◽  
Slow Process ◽  
Beluga Whales ◽  
Bottlenosed Dolphin ◽  
The Difference

Wound repair in beluga whales, Delphinapterus leucas, was studied by examining the sequence and timing of regenerative changes in skin incisions. Soon after the epidermis is breached, exposed cells not normally in contact with seawater begin to degenerate. Within 2 d, the degenerating layer becomes thickened to form a barrier protecting underlying tissue. This layer gradually sloughs as advancing epidermal cells fill the breach. Wound repair is complete in 30–40 d, five times longer than in the bottlenosed dolphin, Tursiops truncatus. Although several factors may be involved, we suggest that the difference in timing appears to relate directly to the greater thickness of epidermis in the whales.

Sign in / Sign up

Export Citation Format

Share Document