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

Decreased pulse rate01:14

Decreased pulse rate

855
Bradycardia is a medical condition in which the heart rate is slower than normal. It occurs when the heart's natural pacemaker, the sinus node, generates slower electrical impulses than the standard rhythm. In adults, bradycardia is diagnosed when the pulse rate falls below 60 beats per minute, indicating a deviation from the normal heart rate range.
There are specific risk factors that can elevate the likelihood of developing bradycardia. Advanced age is a significant factor, with...
855
Decreasing Function01:27

Decreasing Function

220
A decreasing function describes a relationship where the output consistently declines as the input increases. This means that for any two input values, if one is greater than the other, the corresponding output is smaller. Mathematically, a function f is decreasing on an interval I if for every x1 < x2​ in I, f (x1) > f (x2). This type of behavior is visually identified on a graph that slopes downward from left to right.The nature of a function can be analyzed by calculating...
220
Decreased Body Temperature01:29

Decreased Body Temperature

1.0K
A decreased body temperature can occur in patients with hypothermia and frostbite. Heat loss with extended cold exposure overpowers the body's ability to create heat, resulting in hypothermia. Core temperature readings help classify hypothermia. Mild hypothermia is temperatures between 32 °C (89.6 °F) and 35°C (95 °F) and is caused by impaired thermoregulation. Moderate hypothermia is temperatures between 28 C (82.4 °F) and 32 °C (89.6 °F) caused by...
1.0K
Reaction Rate02:53

Reaction Rate

62.5K
The rate of reaction is the change in the amount of a reactant or product per unit time. Reaction rates are therefore determined by measuring the time dependence of some property that can be related to reactant or product amounts. Rates of reactions that consume or produce gaseous substances, for example, are conveniently determined by measuring changes in volume or pressure.
The mathematical representation of the change in the concentration of reactants and products, over time, is the rate...
62.5K
Concentration and Rate Law03:03

Concentration and Rate Law

37.7K
The rate of a reaction is affected by the concentrations of reactants. Rate laws (differential rate laws) or rate equations are mathematical expressions describing the relationship between the rate of a chemical reaction and the concentration of its reactants.
For example, in a generic reaction aA + bB ⟶ products, where a and b are stoichiometric coefficients, the rate law can be written as:
37.7K
Measuring Reaction Rates03:09

Measuring Reaction Rates

28.7K
Polarimetry finds application in chemical kinetics to measure the concentration and reaction kinetics of optically active substances during a chemical reaction. Optically active substances have the capability of rotating the plane of polarization of linearly polarized light passing through them—a feature called optical rotation. Optical activity is attributed to the molecular structure of substances. Normal monochromatic light is unpolarized and possesses oscillations of the electrical...
28.7K

You might also read

Related Articles

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

Sort by
Same author

Size Scaling of the Electrochemical Performance of Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene Microelectrode Arrays for Electrophysiological Recording and Stimulation.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Dissociating stimulus encoding and task demands in ECoG responses from human visual cortex.

bioRxiv : the preprint server for biology·2026
Same author

Size Scaling of the Electrochemical Performance of Ti<sub>3</sub>C<sub>2</sub>T <sub><i>x</i></sub> MXene Microelectrode Arrays for Electrophysiological Recording and Stimulation.

bioRxiv : the preprint server for biology·2026
Same author

Integrating data across oscillatory power bands predicts the seizure onset zone in focal epilepsies.

Brain communications·2026
Same author

A deep neural network model of audiovisual speech recognition reports the McGurk effect.

Psychonomic bulletin & review·2026
Same author

Human orbitofrontal neural activity is linked to obsessive-compulsive behavioral dynamics.

Cell·2026
Same journal

Seeing Scent in Sound: Exploratory Spontaneous Visual and Olfactory Mental Imagery Elicited by Musical Modes.

Multisensory research·2026
Same journal

The Contextually Tolerant but Temporally Intolerant Sensation Transference from Tactile to Taste in Drinking Coffee.

Multisensory research·2026
Same journal

The Pip-and-Pop Effect in Depth: How Multisensory Stimuli Influence Depth Perception.

Multisensory research·2026
Same journal

Material Dependency of Crossmodal Correspondences in Shitsukan (with a Focus on Food).

Multisensory research·2026
Same journal

Shifting Fall Perception: How Virtual Reality Alters the Precision of Estimating Postural Instability Onset.

Multisensory research·2026
Same journal

Duration, Sequence and Beat Perception across Modalities.

Multisensory research·2026
See all related articles

Related Experiment Video

Updated: Jan 22, 2026

Determining Ultrasonic Vocalization Preferences in Mice using a Two-choice Playback Test
08:16

Determining Ultrasonic Vocalization Preferences in Mice using a Two-choice Playback Test

Published on: September 3, 2015

11.9K

Reducing Playback Rate of Audiovisual Speech Leads to a Surprising Decrease in the McGurk Effect.

John F Magnotti1, Debshila Basu Mallick2, Michael S Beauchamp1

  • 1Department of Neurosurgery and Core for Advanced MRI, Baylor College of Medicine, Houston, TX, USA.

Multisensory Research
|July 3, 2019
PubMed
Summary
This summary is machine-generated.

Slowing video playback unexpectedly reduces the McGurk effect, an audiovisual speech illusion. This finding challenges assumptions about visual information processing and supports Bayesian models of perception.

Keywords:
McGurk effectaudiovisual speechindividual differencesmultisensory integrationplayback rate

More Related Videos

Automated Interactive Video Playback for Studies of Animal Communication
07:21

Automated Interactive Video Playback for Studies of Animal Communication

Published on: February 9, 2011

14.0K
Ultrasound Images of the Tongue: A Tutorial for Assessment and Remediation of Speech Sound Errors
08:32

Ultrasound Images of the Tongue: A Tutorial for Assessment and Remediation of Speech Sound Errors

Published on: January 3, 2017

23.1K

Related Experiment Videos

Last Updated: Jan 22, 2026

Determining Ultrasonic Vocalization Preferences in Mice using a Two-choice Playback Test
08:16

Determining Ultrasonic Vocalization Preferences in Mice using a Two-choice Playback Test

Published on: September 3, 2015

11.9K
Automated Interactive Video Playback for Studies of Animal Communication
07:21

Automated Interactive Video Playback for Studies of Animal Communication

Published on: February 9, 2011

14.0K
Ultrasound Images of the Tongue: A Tutorial for Assessment and Remediation of Speech Sound Errors
08:32

Ultrasound Images of the Tongue: A Tutorial for Assessment and Remediation of Speech Sound Errors

Published on: January 3, 2017

23.1K

Area of Science:

  • Cognitive Science
  • Auditory Perception
  • Visual Perception

Background:

  • The McGurk effect is a classic audiovisual speech illusion where visual information influences auditory perception.
  • Previous research indicates significant individual variability in susceptibility to the McGurk effect.
  • The impact of altered speech playback rates on this illusion remains underexplored.

Purpose of the Study:

  • To investigate the effect of video playback speed on the perception of the McGurk effect.
  • To determine if slowing or speeding up audiovisual speech stimuli alters McGurk illusion susceptibility.
  • To test the consistency of these findings with a Bayesian model of multisensory integration.

Main Methods:

  • 110 subjects were presented with audiovisual syllables (McGurk and congruent stimuli) at natural, slow (50%), and fast (200%) playback rates.
  • Perceptual data on McGurk responses and congruent stimulus accuracy were recorded.
  • A Bayes-optimal model was constructed to simulate audiovisual integration under varying sensory reliability.

Main Results:

  • Slowing video playback significantly reduced McGurk effect occurrences by 11%, affecting 79% of subjects.
  • Congruent stimulus accuracy was minimally reduced by 3% with slowed playback.
  • Fast playback rates had negligible effects on both McGurk responses and congruent accuracy.
  • Individual differences in McGurk susceptibility were substantial, consistent with previous findings.

Conclusions:

  • Altering audiovisual speech playback rate, specifically slowing it down, can diminish the McGurk illusion.
  • The results support a Bayesian framework where the reliability of sensory information influences multisensory integration.
  • Playback speed manipulation offers a novel method to probe audiovisual speech perception mechanisms.