Related Experiment Video
Updated: Jul 31, 2026
10:12
Three Dimensional Vestibular Ocular Reflex Testing Using a Six Degrees of Freedom Motion Platform
Published on: May 23, 2013
The auditory subjective vertical as a function of body tilt
Acta Oto-Laryngologica
|July 1, 1981
Summary
Subjects perceive sound as directly overhead before it is, especially when their head is tilted. Auditory subjective vertical (ASV) perception differs based on sound movement direction and experimental duration.
Area of Science:
- Auditory perception
- Human psychophysics
- Vestibular system
Background:
- The auditory subjective vertical (ASV) is crucial for spatial orientation.
- Understanding ASV is vital for fields like virtual reality and audiology.
- Previous research has explored visual and auditory spatial perception independently.
Purpose of the Study:
- To investigate how head tilt and sound source movement affect auditory subjective vertical (ASV) perception.
- To analyze the influence of movement direction (clockwise vs. counterclockwise) on ASV.
- To examine the temporal dynamics of ASV during sound localization tasks.
Main Methods:
- Loudspeaker movement from beside to above the head.
- Head tilt conditions: 0, 30, and 60 degrees left.
- Subjective estimation of auditory verticality during sound approach.
Main Results:
- Auditory subjective vertical (ASV) was estimated before the sound reached the true overhead position.
- Significant differences in ASV were observed between clockwise and counterclockwise sound movements.
- ASV perception demonstrated changes over the course of the experiment, indicating temporal adaptation.
Conclusions:
- Head tilt and sound movement direction systematically alter auditory subjective vertical (ASV) perception.
- The findings suggest a complex interplay between vestibular and auditory systems in spatial orientation.
- Temporal effects on ASV highlight the dynamic nature of auditory spatial processing.
More Related Videos
06:30Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm
Published on: April 28, 2020
07:24Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane
Published on: August 22, 2025
Related Concept Videos
01:13The Cochlea
The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
01:29The Vestibular System
The vestibular system is a set of inner ear structures that provide a sense of balance and spatial orientation. This system is comprised of structures within the labyrinth of the inner ear, including the cochlea and two otolith organs—the utricle and saccule. The labyrinth also contains three semicircular canals—superior, posterior, and horizontal—that are oriented on different planes.
01:16Anatomy of the Ear
Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
01:15Auditory Pathway
Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...
01:15Equilibrium and Balance
The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
01:17Auditory Perception
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 cochlea, a...