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All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year Sort by creator [A → Z]' creator [Z → A]' publishing year ↑ (asc)' publishing year ↓ (desc)' title [A → Z]' title [Z → A]' Simple Search Hits 1 – 3 of 3 1 Cortical Activation Patterns Correlate with Speech Understanding After Cochlear Implantation. Olds, Cristen; Pollonini, Luca; Abaya, Homer... In: Ear and hearing, vol 37, iss 3 (2016) BASE Show details 2 Auditory cortex activation to natural speech and simulated cochlear implant speech measured with functional near-infrared spectroscopy. Pollonini, Luca; Olds, Cristen; Abaya, Homer. - : eScholarship, University of California, 2014 BASE Show details 3 Auditory cortex activation to natural speech and simulated cochlear implant speech measured with functional near-infrared spectroscopy Pollonini, Luca; Olds, Cristen; Abaya, Homer; Bortfeld, Heather; Beauchamp, Michael S.; Oghalai, John S.. - 2013 Abstract: The primary goal of most cochlear implant procedures is to improve a patient’s ability to discriminate speech. To accomplish this, cochlear implants are programmed so as to maximize speech understanding. However, programming a cochlear implant can be an iterative, labor-intensive process that takes place over months. In this study, we sought to determine whether functional near-infrared spectroscopy (fNIRS), a non-invasive neuroimaging method which is safe to use repeatedly and for extended periods of time, can provide an objective measure of whether a subject is hearing normal speech or distorted speech. We used a 140 channel fNIRS system to measure activation within the auditory cortex in 19 normal hearing subjects while they listed to speech with different levels of intelligibility. Custom software was developed to analyze the data and compute topographic maps from the measured changes in oxyhemoglobin and deoxyhemoglobin concentration. Normal speech reliably evoked the strongest responses within the auditory cortex. Distorted speech produced less region-specific cortical activation. Environmental sounds were used as a control, and they produced the least cortical activation. These data collected using fNIRS are consistent with the fMRI literature and thus demonstrate the feasibility of using this technique to objectively detect differences in cortical responses to speech of different intelligibility. Keyword: Article URL: https://doi.org/10.1016/j.heares.2013.11.007 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3939048 http://www.ncbi.nlm.nih.gov/pubmed/24342740 BASE Hide details

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