Lower multisensory temporal acuity in individuals with high schizotypal traits: a web-based study

Area of Science:

• Neuroscience
• Psychology
• Sensory Perception

Background:

• Natural events are multisensory, requiring integrated sensory information.
• Temporal binding windows (TBWs) define the time range for multisensory integration.
• Anomalies in TBWs are linked to perceptual disorders like schizophrenia and autism.

Purpose of the Study:

• To assess the feasibility of a web-based audio-visual simultaneity judgment (SJ) task for measuring multisensory temporal acuity.
• To investigate the relationship between multisensory temporal acuity and schizotypal traits in the general population.

Main Methods:

• A web-based audio-visual SJ task using flash-beep stimuli was employed.
• Participants completed the task and a schizotypal traits questionnaire.
• Response distributions from the web-based task were compared to laboratory-based studies.

Main Results:

• The web-based SJ task yielded response distributions comparable to laboratory settings.
• Reduced multisensory temporal acuity was associated with elevated cognitive-perceptual schizotypal traits.
• The online task demonstrated feasibility for wider participant recruitment.

Conclusions:

• Web-based audio-visual SJ tasks are viable for measuring multisensory temporal acuity outside controlled environments.
• Findings support a link between diminished multisensory temporal acuity and schizotypal traits.