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 Experiment Videos

Crossmodal binding: evaluating the "unity assumption" using audiovisual speech stimuli.

Argiro Vatakis1, Charles Spence

  • 1Department of Experimental Psychology, University of Oxford, Oxford, England. argiro.vatakis@psy.ox.ac.uk

Perception & Psychophysics
|October 13, 2007
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Editorial: Crossing sensory boundaries: multisensory perception through the lens of audition.

Frontiers in psychology·2026
Same author

Differential effects of top-down crossmodal attention on subjective timing of semantic and syntactic violations.

Scientific reports·2025
Same author

Dynamic affective stimulation modulates visual but not auditory prospective timing.

Scientific reports·2025
Same author

Data from an International Multi-Centre Study of Statistics and Mathematics Anxieties and Related Variables in University Students (the SMARVUS Dataset).

Journal of open psychology data·2025
Same author

Audiovisual integration of speech: evidence for increased accuracy in "talk" versus "listen" condition.

Experimental brain research·2025
Same author

The implementation and effectiveness of Integrated Psychological Therapy (IPT) in chronic middle-aged inpatients with schizophrenia.

Schizophrenia research. Cognition·2024

The unity assumption, where observers link sensory inputs to a single event, impacts audiovisual speech integration. Mismatched gender stimuli improved temporal order judgments, supporting this assumption in speech perception.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Speech Perception

Background:

  • The unity assumption posits that observers link distinct sensory signals to a single multisensory event.
  • Understanding how this assumption affects audiovisual speech integration is crucial for cognitive science.

Purpose of the Study:

  • To investigate the influence of the unity assumption on the multisensory integration of audiovisual speech.
  • To determine if assuming unity affects temporal order judgments of speech stimuli.

Main Methods:

  • Participants performed temporal order judgments on audiovisual speech stimuli (syllables or words) presented at varying onset asynchronies.
  • Stimuli were either gender-matched or gender-mismatched.
  • The just noticeable difference was measured to quantify performance.

Related Experiment Videos

Main Results:

  • Participants exhibited improved ability to discern the order of auditory and visual speech components when stimuli were gender-mismatched.
  • Performance was better with mismatched stimuli compared to matched stimuli across all experiments.

Conclusions:

  • The findings provide empirical support for the unity assumption in the context of audiovisual speech temporal integration.
  • The unity assumption plays a significant role in how the brain integrates speech information across auditory and visual modalities.