scholarly journals Effects of Parietal TMS on Visual and Auditory Processing at the Primary Cortical Level – A Concurrent TMS-fMRI Study

2012 ◽  
Vol 23 (4) ◽  
pp. 873-884 ◽  
Author(s):  
Joana Leitão ◽  
Axel Thielscher ◽  
Sebastian Werner ◽  
Rolf Pohmann ◽  
Uta Noppeney
Keyword(s):  
Auditory Processing ◽  
Cortical Level ◽  
Fmri Study

EFFECT OF ATTENTION ON CENTRAL AUDITORY PROCESSING: AN fMRI STUDY

2002 ◽  
Vol 112 (5) ◽  
pp. 587-606 ◽  
Author(s):  
ANDREI SEVOSTIANOV ◽  
STEPHEN FROMM ◽  
VLADIMIR NECHAEV ◽  
BARRY HORWITZ ◽  
ALLEN BRAUN
Keyword(s):  
Auditory Processing ◽  
Central Auditory Processing ◽  
Fmri Study

scholarly journals Differences in auditory processing of words and pseudowords: An fMRI study

2001 ◽  
Vol 14 (1) ◽  
pp. 39-47 ◽  
Author(s):  
Sharlene D. Newman ◽  
Donald Twieg
Keyword(s):  
Auditory Processing ◽  
Fmri Study

scholarly journals Neural Correlates of Individual Differences in Speech Categorization: Evidence from Subcortical, Cortical, and Behavioral Measures

2021 ◽  
Author(s):  
Jinghua Ou ◽  
Alan Yu
Keyword(s):  
Individual Differences ◽  
Auditory Processing ◽  
Voice Onset Time ◽  
Onset Time ◽  
Neural Correlates ◽  
Behavioral Measures ◽  
Cortical Level ◽  
Neurophysiological Mechanisms ◽  
Speech Categorization ◽  
Cortical Representations

Categorization is a fundamental cognitive ability to group different objects as the same. This ability is particularly indispensable for human speech perception, yet individual differences in speech categorization are nonetheless ubiquitous. The present study investigates the neurophysiological mechanisms underlying the variability in categorization of voice-onset time (VOT). Subcortical and cortical speech-evoked responses are recorded to investigate speech representations at two functional levels of auditory processing. Individual differences in psychometric functions correlate positively with how faithfully subcortical responses encode VOT differences. Moreover, individuals also differ in how strongly the subcortical and cortical representations correlate with each other. Listeners with gradient categorization show higher correspondences between the two representations, indicating that acoustic information is relayed faithfully from the subcortical to the cortical level; listeners with discrete categorization exhibit decreased similarity between the two representations, suggesting that the subcortical acoustic encoding is transformed at the cortical level to reflect phonetic category information.

scholarly journals Experience- and sex-dependent intrinsic plasticity in the zebra finch auditory cortex during song memorization

2019 ◽  
Author(s):  
Andrew N Chen ◽  
C Daniel Meliza
Keyword(s):  
Auditory Processing ◽  
Vocal Communication ◽  
Vocal Learning ◽  
Sensitive Period ◽  
Noisy Environment ◽  
Vocal Production ◽  
Acoustic Environment ◽  
Cortical Level ◽  
Auditory Experience ◽  
Intrinsic Plasticity

AbstractEarly auditory experience is critical to the development of vocal communication. Zebra finches and other songbirds have a sensitive period when young birds memorize a song to use as a model for vocal production. We found that intrinsic spiking dynamics change dramatically during this period in the caudal mesopallium, a cortical-level auditory area. Specifically, the proportion of neurons that only fire transiently at the onset of intracellular current injections increases, along with Kv1.1, a channel that facilitates transient spiking. Plasticity is greater in males and requires exposure to a complex, noisy environment. These observations indicate that intrinsic dynamics are modulated in response to the acoustic environment to support robust auditory processing during a critical phase of vocal learning.

scholarly journals Neural Processing of Emotional Prosody across the Adult Lifespan

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Liliana Ramona Demenescu ◽  
Yutaka Kato ◽  
Klaus Mathiak
Keyword(s):  
Auditory Processing ◽  
Emotion Processing ◽  
Oddball Paradigm ◽  
Emotional Prosody ◽  
Adult Lifespan ◽  
Age Related ◽  
Fmri Study ◽  
And Gender ◽  
The Right ◽  
Age Range

Emotion recognition deficits emerge with the increasing age, in particular, a decline in the identification of sadness. However, little is known about the age-related changes of emotion processing in sensory, affective, and executive brain areas. This functional magnetic resonance imaging (fMRI) study investigated neural correlates of auditory processing of prosody across adult lifespan. Unattended detection of emotional prosody changes was assessed in 21 young (age range: 18–35 years), 19 middle-aged (age range: 36–55 years), and 15 older (age range: 56–75 years) adults. Pseudowords uttered with neutral prosody were standards in an oddball paradigm with angry, sad, happy, and gender deviants (total 20% deviants). Changes in emotional prosody and voice gender elicited bilateral superior temporal gyri (STG) responses reflecting automatic encoding of prosody. At the right STG, responses to sad deviants decreased linearly with age, whereas happy events exhibited a nonlinear relationship. In contrast to behavioral data, no age by sex interaction emerged on the neural networks. The aging decline of emotion processing of prosodic cues emerges already at an early automatic stage of information processing at the level of the auditory cortex. However, top-down modulation may lead to an additional perceptional bias, for example, towards positive stimuli, and may depend on context factors such as the listener’s sex.

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