fMRI of the Central Auditory System

Hall, Deborah A.; Paltoglou, Aspasia Eleni

doi:10.1007/978-1-60327-919-2_18

Cited by 2 publications

(2 citation statements)

References 76 publications

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“…In fact, the same auditory regions involved in speech processing are strongly activated by AM/FM sounds. For example, the non-primary cortical areas most activated for AM/FM processing in the syllabic (~2-5 Hz) range are also implicated in pathways for intelligible speech (Scott et al, 2006, Hall, 2012) (Section 4). Thus, we have chosen as our contribution to “Communication Sounds in the Brain” a new consideration of AM/FM processing with relevance to speech.…”

Section: Introductionmentioning

confidence: 99%

Syllabic (∼2–5 Hz) and fluctuation (∼1–10 Hz) ranges in speech and auditory processing

Edwards

Chang

2013

Hearing Research

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Given recent interest in syllabic rates (~2-5 Hz) for speech processing, we review the perception of “fluctuation” range (~1-10 Hz) modulations during listening to speech and technical auditory stimuli (AM and FM tones and noises, and ripple sounds). We find evidence that the temporal modulation transfer function (TMTF) of human auditory perception is not simply low-pass in nature, but rather exhibits a peak in sensitivity in the syllabic range (~2-5 Hz). We also address human and animal neurophysiological evidence, and argue that this bandpass tuning arises at the thalamocortical level and is more associated with non-primary regions than primary regions of cortex. The bandpass rather than low-pass TMTF has implications for modeling auditory central physiology and speech processing: this implicates temporal contrast rather than simple temporal integration, with contrast enhancement for dynamic stimuli in the fluctuation range.

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Section: Introductionmentioning

confidence: 99%

Syllabic (∼2–5 Hz) and fluctuation (∼1–10 Hz) ranges in speech and auditory processing

Edwards

Chang

2013

Hearing Research

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“…2 in Gilley et al (2008)) speech. A few laboratories have been able to provide acoustic stimuli through tubephones and headphones customized to deliver sound levels up to 130 db with low distortion, flat frequency response, reliable phase and noise cancellation (Hall & Paltoglou, 2009). While there have been no reported studies of people with hearing loss with these customized devices, another group has examined the use of fMRI in sedated babies prior to cochlear implantation (DiFrancesco, Robertson, Karunanayaka, & Holland, 2013;Patel et al, 2007;Schmithorst et al, 2005).…”

Section: Combining Structural and Functional Imaging For Longitudinal Tracking Of Amplificationmentioning

confidence: 99%

Structural neuroimaging of the altered brain stemming from pediatric and adolescent hearing loss—Scientific and clinical challenges

Ratnanather

2019

WIREs Mechanisms of Disease

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There has been a spurt in structural neuroimaging studies of the effect of hearing loss on the brain. Specifically, magnetic resonance imaging (MRI) and diffusion tensor imaging (DTI) technologies provide an opportunity to quantify changes in gray and white matter structures at the macroscopic scale. To date, there have been 32 MRI and 23 DTI studies that have analyzed structural differences accruing from pre-or peri-lingual pediatric hearing loss with congenital or early onset etiology and postlingual hearing loss in pre-to-late adolescence. Additionally, there have been 15 prospective clinical structural neuroimaging studies of children and adolescents being evaluated for cochlear implants. The results of the 70 studies are summarized in two figures and three tables. Plastic changes in the brain are seen to be multifocal rather than diffuse, that is, differences are consistent across regions implicated in the hearing, speech and language networks regardless of modes of communication and amplification. Structures in that play an important role in cognition are affected to a lesser extent. A limitation of these studies is the emphasis on volumetric measures and on homogeneous groups of subjects with hearing loss.It is suggested that additional measures of morphometry and connectivity could contribute to a greater understanding of the effect of hearing loss on the brain. Then an interpretation of the observed macroscopic structural differences is given. This is followed by discussion of how structural imaging can be combined with functional imaging to provide biomarkers for longitudinal tracking of amplification.

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fMRI of the Central Auditory System

Cited by 2 publications

References 76 publications

Syllabic (∼2–5 Hz) and fluctuation (∼1–10 Hz) ranges in speech and auditory processing

Syllabic (∼2–5 Hz) and fluctuation (∼1–10 Hz) ranges in speech and auditory processing

Structural neuroimaging of the altered brain stemming from pediatric and adolescent hearing loss—Scientific and clinical challenges

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