Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Echo

Echo

The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Discrimination of two-highlight versus single-highlight phantom echoes by bottlenose dolphins (Tursiops truncatus).

The Journal of the Acoustical Society of America·2026

Same author

Dolphin biosonar detection of phase changes in complex echo highlights.

The Journal of the Acoustical Society of America·2026

Same author

The effects of target range on a jitter discrimination task in echolocating bottlenose dolphins (Tursiops truncatus).

The Journal of the Acoustical Society of America·2025

Same author

The effects of inter-highlight interval and phase on echolocating bottlenose dolphins performing a two-highlight echo discrimination task.

The Journal of the Acoustical Society of America·2025

Same author

A simplified hybrid capture approach retains high specificity and enables PCR-free workflow.

BMC genomics·2025

Same author

Temporary threshold shifts from mid-frequency airborne noise exposures in sealsa).

The Journal of the Acoustical Society of America·2025

Same journal

High-resolution depth estimation for multiple wideband sources in deep sea via sparse Bayesian learninga).

The Journal of the Acoustical Society of America·2026

Same journal

Depression markers in speech: An approach based on tract variables dynamics.

The Journal of the Acoustical Society of America·2026

Same journal

The oyster toadfish (Opsanus tau) alters active and diurnal calling amid vessel noise in New York City.

The Journal of the Acoustical Society of America·2026

Same journal

Experimental noise characterisation of phase-locked tandem-rotor in edgewise flight.

The Journal of the Acoustical Society of America·2026

Same journal

The tune-text-temporal synergy: Prosodic effects of final segmental weakening in Neapolitan.

The Journal of the Acoustical Society of America·2026

Same journal

Monitoring vessel movement above critical offshore infrastructure using distributed acoustic sensing.

The Journal of the Acoustical Society of America·2026

See all related articles

Search research articles

Related Experiment Video

Updated: May 21, 2025

A Low Cost Setup for Behavioral Audiometry in Rodents

A Low Cost Setup for Behavioral Audiometry in Rodents

Published on: October 16, 2012

Quantifying differences in dolphin hearing thresholds obtained with behavioral and auditory evoked potential methods.

Dorian S Houser¹, Kyle Donohoe¹, Jason Mulsow^1,2

¹Department of Conservation Biology, National Marine Mammal Foundation, San Diego, California 92065, USA.

The Journal of the Acoustical Society of America

|March 21, 2025

Summary

This summary is machine-generated.

Comparing auditory steady state response (ASSR) methods in dolphins reveals differences from behavioral hearing. Understanding these variations helps estimate dolphin hearing capabilities more accurately.

More Related Videos

Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique

Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique

Published on: September 7, 2022

Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses

Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses

Published on: January 23, 2017

Related Experiment Videos

Last Updated: May 21, 2025

A Low Cost Setup for Behavioral Audiometry in Rodents

A Low Cost Setup for Behavioral Audiometry in Rodents

Published on: October 16, 2012

Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique

Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique

Published on: September 7, 2022

Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses

Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses

Published on: January 23, 2017

Area of Science:

Marine Biology
Bioacoustics
Auditory Neuroscience

Background:

Auditory steady state response (ASSR) is crucial for assessing dolphin hearing.
Different ASSR production methods impact threshold measurements.
Behavioral hearing thresholds are the desired standard for dolphin auditory assessment.

Purpose of the Study:

To compare auditory steady state response (ASSR) and behavioral hearing thresholds in dolphins.
To evaluate the influence of different ASSR stimuli (SAM tones, tone pip trains) and test media (air, water) on threshold accuracy.
To establish relationships between ASSR and behavioral thresholds for improved dolphin hearing assessment.

Main Methods:

Five dolphins were tested using sinusoidal amplitude modulated (SAM) tones and tone pip trains via a contact transducer.
ASSR testing was conducted with dolphins in air and partially submerged in water.
Underwater behavioral hearing thresholds were measured using pure tone stimuli on the same days as ASSR tests.

Main Results:

Sinusoidal amplitude modulated (SAM) tones consistently overestimated behavioral thresholds, regardless of the test medium.
Tone pip trains underestimated thresholds in air, and showed frequency-dependent over/underestimation in water.
Mean differences between ASSR and behavioral thresholds were generally smaller with tone pip trains, but showed significant exaggeration near the hearing limit.

Conclusions:

The choice of ASSR stimulus and test medium significantly affects dolphin hearing threshold measurements.
Tone pip trains offer a more consistent, though not perfect, approximation of behavioral thresholds compared to SAM tones.
Understanding the discrepancies between ASSR and behavioral thresholds allows for more accurate estimations of dolphin hearing sensitivity.