Tess K. Koerner

Tess K. Koerner
Portland VA Medical Center · National Center for Rehabilitative Auditory Research (NCRAR)

AuD, PhD

About

29
Publications
4,097
Reads
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281
Citations
Citations since 2016
21 Research Items
259 Citations
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201620172018201920202021202201020304050
201620172018201920202021202201020304050

Publications

Publications (29)
Article
We developed and tested a series of novel and increasingly complex multi-token electrophysiology paradigms for evoking the auditory P3 response. The primary goal was to evaluate the degree to which more complex discrimination tasks and listening environments – which are more likely to engage the types of neural processing used in real-world speech-...
Article
Full-text available
(1) Background: Difficulty hearing in noise is exacerbated in older adults. Older adults are more likely to have audiometric hearing loss, although some individuals with normal pure‐tone audiograms also have difficulty perceiving speech in noise. Additional variables also likely account for speech understanding in noise. It has been suggested that...
Article
No PDF available ABSTRACT Anecdotal clinical reports and recent research findings suggest that auditory symptoms are common following a mild traumatic brain injury (mTBI). Typically, only tinnitus is captured on a case history. Self-reported noise sensitivity/hyperacusis and difficulty with speech are not commonly included in the assessment of mTBI...
Article
Full-text available
Understanding speech in the presence of acoustical competition is a major complaint of those with hearing difficulties. Here, a novel perceptual learning game was tested for its effectiveness in reducing difficulties with hearing speech in competition. The game was designed to train a mixture of auditory processing skills thought to underlie speech...
Preprint
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Hearing speech in competition is a major complaint in those who suffer from hearing loss. Here we investigate a novel perceptual learning game that is designed to train perceptual skills thought to underlie speech in competition, such as spectral-temporal processing and sound localization, under conditions of quiet and in noise. Thirty young normal...
Article
Full-text available
Binaural processing, particularly the processing of interaural phase differences (IPDs), is important for sound localization and speech understanding in background noise. Age has been shown to impact the neural encoding and perception of these binaural temporal cues even in individuals with clinically normal hearing sensitivity. This work used a ne...
Article
Purpose A questionnaire survey was conducted to collect information from clinical audiologists about rehabilitation options for adult patients who report significant auditory difficulties despite having normal or near-normal hearing sensitivity. This work aimed to provide more information about what audiologists are currently doing in the clinic to...
Article
Full-text available
This electrophysiological study investigated the role of the medial olivocochlear (MOC) efferents in listening in noise. Both ears of eleven normal-hearing adult participants were tested. The physiological tests consisted of transient-evoked otoacoustic emission (TEOAE) inhibition and the measurement of cortical event-related potentials (ERPs). The...
Article
Understanding speech in background noise is difficult for many listeners with and without hearing impairment (HI). This study investigated the effects of HI on speech discrimination and recognition measures as well as speech-evoked cortical N1-P2 and MMN auditory event-related potentials (AERPs) in background noise. We aimed to determine which AERP...
Article
Understanding speech in background noise is difficult for many listeners, and those with hearing impairment tend to show considerable variability in performance. Event-related potentials (ERPs) and associated cortical oscillations are useful for examining neural responses to speech in various listening conditions and may represent neurophysiologica...
Article
This study examined how speech babble noise differentially affected the auditory P3 responses and the associated neural oscillatory activities for consonant and vowel discrimination in relation to segmental- and sentence-level speech perception in noise. The data were collected from 16 normal-hearing participants in a double-oddball paradigm that c...
Article
Full-text available
Neurophysiological studies are often designed to examine relationships between measures from different testing conditions, time points, or analysis techniques within the same group of participants. Appropriate statistical techniques that can take into account repeated measures and multivariate predictor variables are integral and essential to succe...
Article
Purpose: The goal of this study was to determine whether hearing aids in combination with computer-based auditory training improve audiovisual (AV) performance compared with the use of hearing aids alone. Method: Twenty-four participants were randomized into an experimental group (hearing aids plus ReadMyQuips [RMQ] training) and a control group...
Article
Full-text available
This magnetoencephalography (MEG) study investigated evoked ON and OFF responses to ramped and damped sounds in normal-hearing human adults. Two pairs of stimuli that differed in spectral complexity were used in a passive listening task; each pair contained identical acoustical properties except for the intensity envelope. Behavioral duration judgm...
Article
Four functional hearing loss protocols were evaluated. For each protocol, 30 participants feigned a hearing loss first on an audiogram, and then for a screening test that began a threshold search from extreme levels (-10 or 90 dB HL). Two-tone and a three-tone protocols compared thresholds for ascending and descending tones for two (0.5 and 1.0 kHz...
Article
The ability to detect auditory-visual correspondence in speech is an early hallmark of typical language development. Infants are able to detect audiovisual mismatches for spoken vowels such as /a/ and /i/ as early as 4 months of age. While adult event-related potential (ERP) data have shown an N300 associated with the detection of audiovisual incon...
Article
Listeners with sensorineural hearing loss (SNHL) report significant difficulties when listening to speech in the presence of background noise and are highly variable in their tolerance to such noise. In our studies of speech perception, audibility predicts understanding of speech in quiet for most young listeners with SNHL. In background noise, how...
Article
Research has shown that the amplitude and latency of neural responses to passive mismatch negativity (MMN) tasks are affected by noise (Billings et al., 2010). Further studies have revealed that informational masking noise results in decreased P3 amplitude and increased P3 latency, which correlates with decreased discrimination abilities and reacti...
Article
Full-text available
Speech scientists have long proposed that formant exaggeration in infant-directed speech plays an important role in language acquisition. This event-related potential (ERP) study investigated neural coding of formant-exaggerated speech in 6-12-month-old infants. Two synthetic /i/ vowels were presented in alternating blocks to test the effects of fo...
Article
Speech scientists have long proposed that formant-exaggerated speech plays an important role in phonetic learning and language acquisition. However, there have been very little neurophysiological data on how the infant brain and adult brain respond to formant exaggeration in speech. We employed event-related potentials (ERPs) to investigate neural...

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