8 results match your criteria Acta Acustica United With Acustica[Journal]

  • Page 1 of 1

Auditory brainstem response wave III is correlated with extracellular field potentials from nucleus laminaris of the barn owl.

Acta Acust United Acust 2018 Sep-Oct;104(5):874-877

Department of Biology, University of Maryland, College Park MD 20742, USA.

The auditory brainstem response (ABR) is generated in the auditory brainstem by local current sources, which also give rise to extracellular field potentials (EFPs). The origins of both the ABR and the EFP are not well understood. We have recently found that EFPs, especially their dipole behavior, may be dominated by the branching patterns and the activity of axonal terminal zones [1]. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3813/AAA.919236DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6455957PMC

Over-representation of speech in older adults originates from early response in higher order auditory cortex.

Acta Acust United Acust 2018 Sep-Oct;104(5):774-777

Institute for Systems Research, University of Maryland, College Park, Maryland.

Previous research has found that, paradoxically, while older adults have more difficulty comprehending speech in challenging circumstances than younger adults, their brain responses track the envelope of the acoustic signal more robustly. Here we investigate this puzzle by using magnetoencephalography (MEG) source localization to determine the anatomical origin of this difference. Our results indicate that this robust tracking in older adults does not arise merely from having the same responses as younger adults but with larger amplitudes; instead, they recruit additional regions, inferior to core auditory cortex, with a short latency of ~30 ms relative to the acoustic signal. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3813/AAA.919221DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6343850PMC
January 2019

Pitch of Harmonic Complex Tones: Rate Coding of Envelope Repetition Rate in the Auditory Midbrain.

Acta Acust United Acust 2018 Sep-Oct;104(5):860-864

Eaton-Peabody Labs, Massachusetts Eye & Ear, Boston, MA, USA.

Envelope repetition rate (ERR) is an important cue for the pitch of harmonic complex tones (HCT), especially when the tone consists entirely of unresolved harmonics. Neural synchronization to the stimulus envelope provides a prominent cue for ERR in the auditory periphery, but this temporal code becomes degraded and gives way to rate codes in higher centers. The inferior colliculus (IC) likely plays a key role in this temporal-to-rate code transformation. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3813/AAA.919239DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6320231PMC
January 2019
1 Read

Revisiting Models of Concurrent Vowel Identification: The Critical Case of No Pitch Differences.

Acta Acust United Acust 2018 Sep-Oct;104(5):922-925

Medical Research Council Institute of Hearing Research, University of Nottingham, NG7 2RD, UK.

When presented with two vowels simultaneously, humans are often able to identify the constituent vowels. Computational models exist that simulate this ability, however they predict listener confusions poorly, particularly in the case where the two vowels have the same fundamental frequency. Presented here is a model that is uniquely able to predict the combined representation of concurrent vowels. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3813/AAA.919244DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6201250PMC
September 2019

Evaluation of the starting point of the Lombard Effect.

Acta Acust United Acust 2017 Jan-Feb;103(1):169-172. Epub 2017 Jan 1.

Voice Biomechanics and Acoustics Laboratory, Department of Communicative Sciences and Disorders, Michigan State University, East Lansing, Michigan, United States of America.

Speakers increase their vocal effort when their communication is disturbed by noise. This adaptation is termed the Lombard effect. The aim of the present study was to determine whether this effect has a starting point. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3813/AAA.919043DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5612409PMC
January 2017
2 Reads

Impact of Vocal Tract Resonance on the Perception of Voice Quality Changes Caused by Varying Vocal Fold Stiffness.

Acta Acust United Acust 2016 Mar-Apr;102(2):209-213

UCLA School of Medicine, Head and Neck Surgery Dept., 1000 Veteran Ave, 31-24 Rehab Center, Los Angeles, CA 90095, USA.

Experiments using animal and human larynx models are often conducted without a vocal tract. While it is often assumed that the absence of a vocal tract has only small effects on vocal fold vibration, it is not actually known how sound production and quality are affected. In this study, the validity of using data obtained in the absence of a vocal tract for voice perception studies was investigated. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3813/AAA.918937DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4845961PMC

Reliability in Measuring Head Related Transfer Functions of Hearing Aids.

Acta Acust United Acust 2015 Sep;101(5):1064-1066

Acoustics Research Institute, Austrian Academy of Sciences, Vienna, Austria.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3813/AAA.918900DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5321481PMC
September 2015

Experimental and Theoretical Investigations of Phonation Threshold Pressure as a Function of Vocal Fold Elongation.

Acta Acust United Acust 2011 Jul;97(4):669-677

Department of Surgery, Division of Otolaryngology - Head and Neck Surgery, University of Wisconsin, School of Medicine and Public Health, Madison, WI53792-7375, USA.

The relationship between the vocal fold elongation and the phonation threshold pressure (PTP) was experimentally and theoretically investigated. The PTP values of seventeen excised canine larynges with 0% to 15% bilateral vocal fold elongations in 5% elongation steps were measured using an excised larynx phonation system. It was found that twelve larynges exhibited a monotonic relationship between PTP and elongation; in these larynges, the 0% elongation condition had the lowest PTP. Read More

View Article

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4269295PMC
July 2011
7 Reads
  • Page 1 of 1