Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Entropy02:39

Entropy

Salt particles that have dissolved in water never spontaneously come back together in solution to reform solid particles. Moreover, a gas that has expanded in a vacuum remains dispersed and never spontaneously reassembles. The unidirectional nature of these phenomena is the result of a thermodynamic state function called entropy (S). Entropy is the measure of the extent to which the energy is dispersed throughout a system, or in other words, it is proportional to the degree of disorder of a...
Entropy Changes Accompanying Specific Processes01:21

Entropy Changes Accompanying Specific Processes

Entropy, a measure of disorder in a system, changes during phase transitions like freezing or boiling. At the transition temperature Ttrs, where two phases are in equilibrium, the phase transition is a reversible process. The entropy change can be calculated from a substance's enthalpy of transition using the equation ΔStrs = ΔtrsH /Ttrs.When a perfect gas expands isothermally from one volume to another, entropy increases logarithmically with volume. Conversely, isothermal compression results...

You might also read

Related Articles

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

Sort by
Same author

Small areas of damage due to glaucoma are less likely to be identified by SITA-Faster than SITA-Standard.

Optometry and vision science : official publication of the American Academy of Optometry·2026
Same author

Devising and Evaluating an Adaptive Static-Automated Perimetry Test for Children: A Feasibility Study.

Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)·2026
Same author

A Structure-Function Dataset With Known Rates of Glaucomatous Progression.

Translational vision science & technology·2026
Same author

Association between Vision-Related Difficulties in Low Light Levels and Visual Fields in Glaucoma.

Ophthalmology. Glaucoma·2026
Same author

Contrast increment and decrement processing measured using visual search in established glaucoma.

Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)·2025
Same author

Personalizing the Transition From 24-2 to 10-2 Visual Field Testing Using ARREST - A Simulation Study.

Translational vision science & technology·2025

Related Experiment Video

Updated: Jun 8, 2026

A Tactile Automated Passive-Finger Stimulator (TAPS)
19:44

A Tactile Automated Passive-Finger Stimulator (TAPS)

Published on: June 3, 2009

Adaptive psychophysical procedures, loss functions, and entropy.

Elena Kelareva1, James Mewing, Andrew Turpin

  • 1University of Melbourne, Melbourne, Victoria, Australia.

Attention, Perception & Psychophysics
|October 19, 2010
PubMed
Summary

A new threshold determination strategy, EntFirst, offers superior performance for yes-no procedures compared to existing methods in non-laboratory settings. This study reviews algorithms and discusses crucial considerations like loss function selection for accurate psychometric function analysis.

More Related Videos

Applications of EEG Neuroimaging Data: Event-related Potentials, Spectral Power, and Multiscale Entropy
11:15

Applications of EEG Neuroimaging Data: Event-related Potentials, Spectral Power, and Multiscale Entropy

Published on: June 27, 2013

A Two-interval Forced-choice Task for Multisensory Comparisons
07:13

A Two-interval Forced-choice Task for Multisensory Comparisons

Published on: November 9, 2018

Related Experiment Videos

Last Updated: Jun 8, 2026

A Tactile Automated Passive-Finger Stimulator (TAPS)
19:44

A Tactile Automated Passive-Finger Stimulator (TAPS)

Published on: June 3, 2009

Applications of EEG Neuroimaging Data: Event-related Potentials, Spectral Power, and Multiscale Entropy
11:15

Applications of EEG Neuroimaging Data: Event-related Potentials, Spectral Power, and Multiscale Entropy

Published on: June 27, 2013

A Two-interval Forced-choice Task for Multisensory Comparisons
07:13

A Two-interval Forced-choice Task for Multisensory Comparisons

Published on: November 9, 2018

Area of Science:

  • Psychology
  • Statistics
  • Signal Detection Theory

Background:

  • Psychometric functions are crucial for understanding perception and decision-making.
  • Accurate threshold determination is essential in various fields, including audiology and vision research.
  • Existing methods for threshold estimation in yes-no tasks often have limitations in non-laboratory settings.

Purpose of the Study:

  • Introduce and evaluate a novel strategy, EntFirst, for psychometric function threshold determination.
  • Compare the performance of EntFirst against established algorithms.
  • Provide a comprehensive review of threshold-finding algorithms and address under-discussed issues.

Main Methods:

  • Development of the EntFirst strategy for threshold determination.
  • Empirical comparison of EntFirst with existing threshold estimation algorithms.
  • Literature review of psychometric function thresholding techniques.

Main Results:

  • EntFirst demonstrates superior performance in estimating the 50% threshold compared to commonly used strategies.
  • The study identifies specific applications where different thresholding algorithms are most effective.
  • Key considerations for selecting appropriate loss functions are discussed.

Conclusions:

  • EntFirst offers a more effective approach for threshold determination in yes-no procedures, particularly outside laboratory environments.
  • A deeper understanding of algorithm suitability and loss function selection can improve psychometric analysis.
  • This work contributes to more accurate and reliable perceptual threshold measurement.