Related Experiment Video
Updated: Jul 28, 2026
11:15
fMRI Mapping of Brain Activity Associated with the Vocal Production of Consonant and Dissonant Intervals
Published on: May 23, 2017
A neural mapping hypothesis to explain why velar stops have an allophonic split.
1Department of Linguistics, University of Texas at Austin, TX 78712-1196, USA.
Brain and Language
|November 7, 1999
Summary
Velar stops exhibit distinct acoustic patterns based on surrounding vowels, creating a phonetic space that alveolar stops occupy. This suggests articulatory adjustments serve auditory perception.
Area of Science:
- Phonetics
- Acoustic Phonetics
- Linguistics
Background:
- Velar stops (/k/, /g/) have two main allophones: palatalized before front vowels and velarized before back vowels.
- Acoustic analysis of the second formant transition reveals distinct clusters for these allophones.
Purpose of the Study:
- To investigate the acoustic properties of velar stop allophones.
- To determine the relationship between velar allophones and alveolar stops in acoustic space.
- To propose a hypothesis explaining the bimodal distribution of velar stops.
Main Methods:
- Acoustic analysis of velar stops, focusing on second formant (F2) onset and offset frequencies.
- Examination of cross-linguistic acoustic data for velar and alveolar stops.
- Identification of acoustic voids and distributions within the F2 transition space.
Main Results:
- Acoustic data clearly show two distinct, separated groups of velar allophones.
- Alveolar stops were found to occupy the acoustic space between these two velar allophonic groups.
- The bimodal distribution of velar stops was confirmed across different languages.
Conclusions:
- The observed bimodal distribution of velar stops is acoustically significant.
- Alveolar stops are acoustically situated in the 'gap' between velar allophones.
- A neural-based mapping hypothesis suggests articulatory variations serve auditory representation by optimizing perceptual distinctiveness.
More Related Videos
13:12Translational Brain Mapping at the University of Rochester Medical Center: Preserving the Mind Through Personalized Brain Mapping
Published on: August 12, 2019
09:09Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
Published on: September 27, 2024
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.
01:10Higher Mental Functions of the Brain: Language
Language is a system of communication that allows the expression of thoughts, ideas, and feelings. The brain processes language in both hemispheres.
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
01:28Lateralization
Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
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...
01:24Prosopagnosia
Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...
01:24Facial Feedback Hypothesis
Charles Darwin proposed that facial expressions are an evolutionary adaptation for communication. He argued that these expressions are not influenced by culture but are universal across species. For example, a snarling expression with exposed teeth signals a threat in many animals, including humans. Darwin also suggested that displaying an emotion can intensify the feeling. Smiling, for example, could enhance one's sense of happiness. This idea laid the foundation for understanding the role of...