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Related Experiment Video

Updated: Jun 20, 2026

Testing Sensory and Multisensory Function in Children with Autism Spectrum Disorder

Testing Sensory and Multisensory Function in Children with Autism Spectrum Disorder

Published on: April 22, 2015

Perceived timing of new objects and feature changes.

Ryota Kanai¹, Thomas A Carlson, Frans A J Verstraten

¹Institute of Cognitive Neuroscience & Dept of Psychology, University College London, London, UK. r.kanai@ucl.ac.uk

Journal of Vision

|September 19, 2009

Summary

This summary is machine-generated.

The flash-lag effect (FLE) usually makes moving objects appear to lag. However, this study found FLE doesn't occur when a new object appears, suggesting new object formation takes extra time.

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Area of Science:

Cognitive Neuroscience
Visual Perception
Psychophysics

Background:

The flash-lag effect (FLE) demonstrates a dissociation between physical and perceived event timing.
FLE occurs when a flash coincides with a moving object, causing the object to appear delayed.

Purpose of the Study:

To investigate conditions under which the flash-lag effect (FLE) does not occur.
To compare perceived timing and processing delays for new object appearance versus feature changes.

Main Methods:

Conducted psychophysical experiments comparing perceived timing of object appearance and feature changes.
Analyzed processing delays associated with updating object representations in the visual system.

Main Results:

FLE was not observed under specific conditions involving transient events and object motion.
Perceived timing of new object appearance was significantly delayed compared to feature updates of existing objects.

Conclusions:

The construction of new object representations requires additional time for stable neuronal establishment.
Visual system processing differs for creating new objects versus updating existing ones, impacting perceived timing.