Related Experiment Video
Updated: Mar 31, 2026
07:12
Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
Published on: April 11, 2025
1.0K
Audiovisual Delay as a Novel Cue to Visual Distance
Philip Jaekl1, Jakob Seidlitz2, Laurence R Harris3
1Center for Visual Science and Department of Brain and Cognitive Sciences, University of Rochester, Rochester, New York, United States of America.
Plos One
|October 29, 2015
Summary
Humans can use sound delays to perceive distance. This study shows that audiovisual delays make objects seem farther away and improve distance judgment accuracy.
Area of Science:
- Psychology
- Neuroscience
- Sensory Perception
Background:
- Sound delays relative to light increase with event distance.
- Humans' ability to use sound delays for distance computation is not well understood.
Purpose of the Study:
- To test if audiovisual delays bias and improve human perceptual distance discrimination.
- To determine if sound delays serve as an ordinal cue for distance.
Main Methods:
- Two experiments involving participants judging the relative distance of 3D dot clusters.
- Stimuli were presented with varying sound delays or leads.
- A control experiment assessed the detectability of sound delay durations.
Main Results:
- Dot clusters with sound delays were perceived as more distant than those with sound leads.
- The presence of a sound delay was sufficient to increase perceived distance.
- Ecologically congruent sound delays improved the precision of distance judgments.
- The sound delay durations were not consciously detectable.
Conclusions:
- Audiovisual delays can bias perceived distance, making stimuli appear farther away.
- Sound delays can serve as an ordinal cue for visual distance perception.
- This research highlights the role of multisensory integration in spatial awareness.
Related Concept Videos
01:15Depth Perception and Spatial Vision
2.6K
Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
2.6K
01:29Non-Verbal Cues
468
Non-verbal communication extends beyond gestures and facial expressions to include vocal elements known as paralanguage. Paralanguage consists of non-verbal vocal cues such as pitch, loudness, speech rate, pauses, and non-verbal vocalizations like laughter, sighs, and moans. These elements not only accompany speech but also provide critical emotional and contextual information.The Role of Paralanguage in CommunicationParalanguage adds depth to spoken language by conveying emotions and...
468
01:29Sight Distance in a Vertical Curve
475
Sight distance on vertical curves is critical in roadway design. It ensures drivers can see far enough ahead to identify and respond to hazards effectively. This directly impacts safety, driver comfort, and the overall efficiency of the transportation network.Vertical curves are classified into crest and sag curves based on their geometry. For crest curves, sight distance is determined by the line of sight between a driver's eye and a small object on the road's surface. Design parameters for...
475
01:06Echo
1.1K
The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
1.1K
01:12Visual Agnosia
1.7K
Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...
1.7K
01:17Auditory Perception
1.5K
The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
1.5K