Related Experiment Video
Updated: Feb 2, 2026
10:09
Mapping the After-effects of Theta Burst Stimulation on the Human Auditory Cortex with Functional Imaging
Published on: September 12, 2012
14.3K
Sound identity is represented robustly in auditory cortex during perceptual constancy.
Stephen M Town1, Katherine C Wood2,3, Jennifer K Bizley4
1Ear Institute, University College London, 332 Gray's Inn Road, London, WC1X 8EE, UK. s.town@ucl.ac.uk.
Nature Communications
|November 16, 2018
Summary
Neural representations in the auditory cortex maintain sound identity across acoustic variations, crucial for perceptual constancy. Behavioral generalization depends on the precise timing of this identity information.
Area of Science:
- Neuroscience
- Auditory Perception
- Sensory Processing
Background:
- Perceptual constancy enables recognizing objects despite sensory variations.
- The neural basis for robust object identity representation, particularly in audition, is not fully understood.
Purpose of the Study:
- To investigate how the auditory cortex represents sound identity robustly across acoustic variations.
- To determine the neural mechanisms underlying perceptual constancy in auditory processing.
Main Methods:
- Neural activity was recorded in the auditory cortex of ferrets during a perceptual constancy task.
- Neural representations of sound identity were analyzed across variations in fundamental frequency, sound level, and location.
Main Results:
- Ferret auditory cortex neurons robustly represent sound identity across acoustic variations.
- Encoding of sound identity was delayed during conditions where animals failed to generalize or during passive listening.
- Neural population decoding exceeded the animals' behavioral performance.
Conclusions:
- Sound identity is represented robustly in the auditory cortex during perceptual constancy.
- Behavioral generalization of sound identity relies on the conserved timing of neural identity information.
Related Concept Videos
01:12Perceptual Constancy
1.4K
Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
1.4K
02:13The Representativeness Heuristic
16.8K
The representative heuristic describes a biased way of thinking, in which you unintentionally stereotype someone or something. For example, you may assume that your professors spend their free time reading books and engaging in intellectual conversation, because the idea of them spending their time playing volleyball or visiting an amusement park does not fit in with your stereotypes of professors.
16.8K
01:25Personal Identity
375
Personal identity is the deeply felt sense of self that individuals cultivate over time, intricately woven from intrinsic qualities they consider essential to their existence—qualities such as morality, intelligence, and friendliness. These attributes serve as vital internal benchmarks, guiding individuals in evaluating whether their actions resonate with their true selves.When personal identity takes center stage in one's life, individuals often emphasize their distinctiveness,...
375
01:28Trigonometric Identities II
419
Double-angle and half-angle trigonometric identities are derived from the fundamental sum and difference formulas and serve as essential tools for simplifying expressions, solving equations, and evaluating integrals. These identities reduce the complexity of trigonometric functions by relating functions of a multiple or fractional angle to functions of a single angle. Their applications extend across mathematics, physics, and engineering, particularly in Fourier analysis, wave mechanics, and...
419
01:12Korotkoff Sounds
8.2K
Korotkoff sounds are the specific sounds heard while measuring blood pressure using a sphygmomanometer, typically with a stethoscope or a Doppler device. They are named after Russian physician Nikolai Korotkov, who first described them in 1905. These sounds correspond to turbulent blood flow in the artery as the blood pressure cuff is gradually released after inflation.
During blood pressure assessment, inflating the cuff 30 millimeters of mercury above the patient's systolic blood pressure...
During blood pressure assessment, inflating the cuff 30 millimeters of mercury above the patient's systolic blood pressure...
8.2K
01:15Heart Sounds
3.6K
Heart sounds are generated by the turbulence in blood flow due to the closing of heart valves. These sounds are best perceived slightly away from the valves, where the blood flow disseminates the sound.
Auscultation is the process of listening to these internal body sounds using a stethoscope. The heart produces four types of sounds, but only two—S1 and S2—can usually be heard with a stethoscope.
S1, also known as the "lub" sound, is caused by the closure of atrioventricular (A-V)...
Auscultation is the process of listening to these internal body sounds using a stethoscope. The heart produces four types of sounds, but only two—S1 and S2—can usually be heard with a stethoscope.
S1, also known as the "lub" sound, is caused by the closure of atrioventricular (A-V)...
3.6K